About the Weather Station

Anemometer is on the north side of the garage.

6 ft above the crest of the roof and 26 ft above ground level. The only weak point of the station:  it should be on it's own tower and out of the disrupted airflow across the top of the garage..  Perhaps someday when I have a spare $2k kicking around.

Temp & humidity sensors are located inside the solar radiation shield mounted on the north side of the pasture fence far away from any thermal mass. The rain gauge sits atop the same post.  (Ever curious, Sara our weather puddy, just had to come see what's going on)

 

The new weather software and weather server went on line 11-7-2007. 

Location: Sampson Cove - Waldoboro, Maine       Registered ID:  KMEWALDO3

44.0675316 N    -69.3476257 W

Weather Station: Oregon Scientific  WMR-918 (wireless)
Weather Software: Virtual Weather Station  Version 14.00 P42
LIDAR:  Vaisala - CL31  located on rear deck  (out of service until repaired)
Anemometer is mounted to a steel antenna mast that extends 6 ft  above the north peak of the garage roof and 26 ft above ground level.
Rain Gauge is mounted in the open, atop a pasture fence post approx 150 ft from the house.
Outside Air Temp/humidity gauge is mounted on the north side of one of the pasture fence posts inside a solar radiation shield.
WMR-918 Data (depending on the sensor) is sampled & processed on average, once every 30 sec.  -  wind speed every 14 seconds
Processed Weather Data and graphs are uploaded to our server approximately once every 15minutes...
Data is uploaded to the WeatherUnderground once every hour
Raw data is sampled every minute
LIDAR data is sampled once every 15 minutes from a Vaisala CL31  (note: currently out of service)
The Hi-Res webcam image is acquired from a retired Olympus Digital camera at 1024x768 every 10 minutes

Automated Operations:


Every minute:

jpg images are captured every minute from the time lapse video camera at 640x480 resolution. Next the text data from the weather station is converted into a bitmap and stamped into each jpg.  Another even further compressed jpg of the tide graph is also created.   The three visual elements are then merged into one jpg and saved in a temporary folder.  These jpg's will be used later to generate the time lapse weather video.....   Images begin being acquired 30 minutes before sunrise to 40 minutes after sunset in the summer months, and somewhat less in the winter months when the period of civil twilight is less.  This calculation is derived from the sunrise and sunset data provided by the Oregon weather station.

Every 5 minutes:

the following is performed:  The tides are calculated running WXTide32 and the hi-res tide graph is compressed to a jpg for the net.  Next the flash movie of the Storm Predator loop is created which begins with making an avi movie from the acquire jpg images Storm Predator saves. From the avi movie, we then create a Flash movie and add the appropriate controls. Unlike Storm predator that  contains only the past 24 frames, , the animation loop spans 81 frames or approximately the last 4.5 hours of radar imagery and a delay added to the end of the loop that automatically repeats.  Since NOAA updates radar imagery more often in inclement weather, the time span of the loop is not cast in concrete, but has some variability.

Every 10 minutes:

The hi-res webcam image is acquired from an Olympus C-730UZ digital camera to which a time and date stamp is added, and then converted to a 1024x768 jpg for the web server. This task is scheduled to run every 10 minutes from approximately 15 min before sunrise, to approx 15 min after sunset. At the end of the day, the last image is left on the server until operation resumes again.

Every hour:

The jpg images of assembled jpg's that were acquired every minute are then made into an AVI movie.  The AVI movie is then used to create a Flash movie where as before, controls are added.  The file size property is read and converted into a small text file and FTP'd to our main isp so that the current file size is made known.

Every 2 hours:

The NOAA ftp server is polled for the latest severe weather warnings and latest 7 day forecast.  The raw text of the 7 day forecast is then parsed into an html file that has day headings that are capitalized, and broken into separate paragraphs, making it much easier to read.

Every 24 hours - end of day.

This is when general "house cleaning" and organization takes place, to prepare for the next day..

At the end of the day (11:57pm local)  the time lapse movie is renamed to yymmdd.swf  and a copy made to a temp folder. It is then archived.  Folders named for the appropriate year and month in the format yymmdd are created if they already do not exist.   After archiving, the other copy is renamed again and then becomes "Yesterday's Movie".  Finally, all the jpg images are deleted from the temp time lapse folder to make way for tomorrow's new time lapse movie which begins 30 minutes before sunrise and runs until 40 minutes after sunset. The radar  flash movie is also archived and the prior day's images are then deleted.

Finally, a registry scan is run to clean up the mess left over at the end of the day by windows.

Server Hardware and connection:

Weather Data & Webcam images are hosted locally by our own server running Apache 2.2.11 which is operational 24/7 with the exception of when down for routine maintenance, upgrades or at the approach of a severe thunderstorm.  Our WebCam/Weather/Tides server has it's own assigned static ip address,  &  for security reasons, is not part of our other internal networks. 

The physical server itself is a HP xw8200 Xeon with Dual 3.2 GHz processors with 4 GB of memory and a 160 GB striped RAID disk array running Windows XP Pro.

ISP:  Time Warner Cable Business Class (Cable)...   Transfer speeds (just measured via Speakeasy) typically average 2400 kbps up, and 15980 kbps down.  However, depending on other shared connections and speed of the net itself at any particular instant, these speeds can vary widely.

The station is also part of the  Weather Exchange and Weather Underground ®.

http://www.ambientweather.com/  

http://www.wunderground.com/

 Our station ID is:  KMEWALDO3  (the letter O)

 

 

 

Weather Station News

Sept 21, 2009

The Time Lapse Movie sample time has been decreased from 60 sec to 30 sec and played back at 15 fps.  The  shorter days allow for smoother animation without file sizes exceeding 10mb

June 26, 2009

Added station pictures

May 10, 2009

The Time Lapse Movie sample time has been increased from 30 sec to 60 sec and played back at 10 fps.  The long days have resulted in file sizes sometimes exceeding 10 mb.

Radar images have been added to the webcam page.   Current local forecasts  via Server Side Includes have been added as well.

April 13, 2009

The real time tide info is back after strengthening the legal disclaimer.

April 5, 2009

The old Compaq 1.2 GHz system that had only 640 mb of memory (the max it would accept) with a 60gb hard drive, has been replaced with a HP xw8200 dual Xeon Server with a 3.2 GHz processor with 4 gb of ram with a striped RAID 0 320gb disk array.   The old system performed adequately for years, but  when daily time lapse movies were added to the webcam page and updated each hour, and with all the other applications running, it started to slow to a crawl - especially with the weather station software having to update the graphs and strip charts continuously..   Generating a 1700 frame Flash movie used to take 32 minutes by the end of the day...   The new system performs the same task in   2 min 52 seconds !   Still some bugs to be worked out, since migrating the applications to the new system never goes perfectly....

April 3, 2009

Fixed some pesky JavaScript code causing IE 7 to get CSS Style sheets  confused and butcher the Time Lapse selection buttons.  Firefox also exhibited the problem but in a different way...   Took only 7 frustrating hours to find.  Problem is that I only have very basic Java skills, so what would have taken a good Java programmer only minutes to spot, took me a mind numbing 7 hrs .......

March 30, 2009

Local Tide calculations have been removed from the site...

Several legal cases despite the disclaimers that tidal data must not  be used for navigation purposes, has resulted in the host of the site being held accountable for damages both real and punitive resulting in loss of property...  Seems we live in a very litigious society where giving away even free information bears serious risk....

With regret, the on-line Waldoboro Tide information will no longer be made available... 

March 26, 2009

Still "playing" with the time lapse software, trying to obtain the best balance between file size  and quality of the image.  320x240 was simply too small to see much detail (although the file size was wonderfully compact.  640x480 delivers reasonable quality after being highly compressed.   The VP7 codec would be even better, as it generates file sizes half to almost 1/3rd the size of Flash with the same apparent quality, but would mean creating a wmv movie file with it's own limitations.  The major hurdle is something I  can't control, as to view it, would require each viewer to install that codec, as it is not  included with the standard fare of codecs already installed on most people's systems...   (The casual viewer probably won't bother)... Also issues of having to allow Active-X controls while running Internet Explorer...   By comparison, Flash poses none of those issues and unlike wmv players, is generally platform independent, meaning that it "plays nicely" with Windows, Macs, Linux, Unix etc.

Also some issues as to luminance of the Hauppauge capture board which produced images far too dark with no way to control the brightness or setup levels.  Hauppauge's idea of support was to buy another one and see if that cured the problem...  (Never again !) The temporary solution was to put an unused TBC with proc amp in the line to overdrive the video levels to compensate for the capture board's mis-comings..... 

At the end of the day, a script automates the process where yesterdays video gets updated to the new "Yesterday's video", temporary files are cleaned up, and the current movie is archived.

Next bright idea is to have  a calendar pull-down menu perhaps, to pull up movies from the archive.... 

March 21, 2009

a new composite video webcam has been installed...   What should have taken 30 minutes, ended up taking the better part of an entire afternoon...  Still a better permanent mount  to build and some new software issues to deal with, so expect sporadic operation until things become finalized...

March 14, 2009

I've always been fascinated with time lapse photography  and would make time lapse movies of the tides in the cove on occasion...  But this was not enough to satisfy the craving for more... 

What I thought would be interesting just to do for myself, was to automate the entire process and create Flash movies of the conditions on a daily basis.....  What I thought what  might even be more informative, would be to add some of the Station data to the image as it was being recorded....   One then could clearly see the relationship between cloud cover, wind shifts, humidity etc and "see" their effect on temperature...   Shouldn't take most observers capable of self reasoned thought to figure out it's the solar loading and radiational cooling that dramatically affects the  temperature and not the CO2 levels.

 


 

Snowfall Totals
Winter Seasons of 2008-2011 
Date - Amount - Accumulated Running Season Total to Date

2011-2012

 

2010-2011   2009-2010
Date Inches Season Total   Date Inches Season Total   Date Inches Season Total
                     
Oct 30, 2011 2 2   Oct 31, 2010 Flurries 0   Oct 18, 2009 Trace 0
Nov 23, 2011 3 5   Nov 26, 2010 Trace 0   Nov 05, 2009 1 1
Dec 07, 2011 1 6   Dec 06, 2010 5 5   Dec 06, 2009 5 6
Dec 17, 2011 1 7   Dec 22, 2010 3 8   Dec 09, 2009 8 14
Dec 23, 2011 2 9   Dec 27, 2010 8 16   Dec 19, 2009 1 15
Dec 25, 2011 3 12   Jan 12, 2011 11 27   Dec 28, 2009 1 16
Jan 12, 2012 5 17   Jan 15, 2011 1 28   Dec 30, 2009 2 18
Jan 20, 2012 5 22   Jan 17, 2011 1 29   Jan 01, 2010 1 19
Jan 27, 2012 1 23   Jan 21, 2011 8 37   Jan 02, 2010 8 27
Jan 30, 2012 1 24   Jan 26, 2011 1 38   Jan 18, 2010 8 35
Mar 01, 2012 6 30   Jan 27, 2011 1 39   Jan 19, 2010 4 39
        Feb 01, 2011 3 42   Jan 20, 2010 1 40
        Feb 02, 2011 9 51   Feb 03, 2010 1 41
        Feb 05, 2011 1 52        
        Feb 08, 2011 1 53        
        Feb 21, 2011 1 54        
        Feb 25, 2011 7 61        
        Feb 27, 2011 1 62        
        Mar 21, 2011 4 66        
        Apr 01, 2011 5 71        
 
2008-2009

 

No Data   No Data
Date Inches Season Total   Date Inches Season Total   Date Inches Season Total
                     
Dec 19, 2008 3 3                
Dec 21, 2008 16 19                
Dec 24, 2008 1 20                
Jan 08, 2009 2 22                
Jan 11, 2009 5 27                
Jan 18, 2009 4 31                
Jan 19, 2009 3 34                
Jan 28, 2009 6 40                
Feb 04, 2009 1 41                
Feb 19, 2009 4 45                
Feb 22, 2009 7 52                
Mar 02, 2009 7 59                
                     
                     
                     
                     
                     
                     
                     
                     

 

The annual season average for Waldoboro, ME is 70 inches of Snow

Record Low Temperature since this station became operational:  minus 26.1 deg f        Recorded 7am Jan 16, 2009

Sampson Cove completely froze over  12-22-2008   (the earliest that's been observed since moving here in 2000)

Total Rain 2009: 53.8 inches

 

For National or other region Snow Analysis and depths, go to NOAA   http://www.nohrsc.noaa.gov/nsa/

2008 Totals: Jan 1 to Jan 1
(Total annual rainfall and annual Heating Degree totals are reset to zero Jan 1st)

 

  Total Rain: 47.84"                              (historical average: 46.93") *
Annual Heating Degree Days: 7284   (historical average: 7353) *

For 2008, both rainfall and degree heating totals have fallen within the normal averages for Waldoboro, Maine

* Yearly Totals were undoubtedly somewhat higher, considering the few times the station was down for repair/maintenance
or there were system/server problems, power failures etc where no data was recorded. Most notable: 2 days in Dec 2008
where we were without power due to the ice storm. That alone would have added another approx 80 degrees to
the annual Heating Degree Day total, making 2008 slightly colder but still well within the limits of what is considered normal.

 

Current Station Status & History of previous events

 
 

Current Status  UP

09-29-2011   Replaced outdoor temp sensor battery
09-16-2011   Replaced defective Raid Gauge
07-11-2010   Rain Gauge not working - Cleaned and reset

09-23-2009   With shorter days, the weather movie time lapse interval has been reduced
                    from 60 sec to 30 sec for smoother animation
09-22-2009    Problem with Internet Explorer V8 and Shadowbox not working. Forced
                    emulation of IE V7 as a temporary fix.
09-12-2009    Different update intervals caused non-linear graphs. Database edited.
08-26-2009    Temp sensor has been bad for the past 4 days - repaired
04-15-2009    Pressure sensor failed - replaced batteries
04-05-2009    Installed new HP xw8200 Xeon Server
03-21-2009    Installed new webcam for Time Lapse Video.
03-04-2009    LIDAR (cloud base measurement) out of service
02-20-2009    Anemometer literally frozen..  Thawed out (2-25)
02-07-2009    New Apache Server Software was installed. 12 hrs of data not collected
02-05-2009    Software upgrades

02-01-2009    Station down for routine maintenance for about 45 minutes.
01-13-2009    Server Crashed - Power Supply Failed = Replaced.
11-21-2008    Pressure sensor failed -    Replaced batteries
09-27-2008    Rain Gauge died again.  This time I replaced the entire unit
09-14-2008    Replaced batteries in rain gauge
09-07-2008    Server Crash took out past 30 days of data. Restore from archive set
03-22-2008    Down for maintenance 3:25pm to 4:40 pm

 

 

Heating Degree Days

Heating Degrees for Jan 2009: Historical Average = 1361   Actual this month:  1518
January turned out to be markedly colder than the historical average amounting to an additional 157 Heating Degree Days for the month.
This translates into having to purchase on average, an additional 1.88 million BTU's in energy to stay warm in January...

Annual average Heating Degree Days for the Midcoast area of Maine: 7353 **

(Source: NOAA 1971-2000)

Interpreting the graphs

** Heating Degree Day: 

Days where heat is required to maintain a standard comfort level of 65 deg f, are measured in heating degree-days. For a day with a mean average temperature of 40o F, 25 heating degree-days would be recorded (65 minus 40) since you would have to heat the home by 25 deg f to maintain a standard comfort level of 65. Heating degree day totals can simply be added together. For example: Two identical cold days as before, would result in a total of 50 heating degree-days for the 2-day period or over any other time period as desired.  The annual total is merely the sum of all the Degree Heating Days.  Why is this number important ?  - - -  It determines how much fuel you will have to consume. The higher the number; the greater your heating bill !

Why is 65 deg f  the standard reference at which point one must heat to maintain a minimum comfort level ?  Some standard had to be agreed on, and 65 deg f was the lowest temp most people would feel comfortable at, so that became the standard agreed reference. 

A comprehensive energy audit is somewhat involved, but there are some handy rules of thumb that are amazingly accurate for typical residential construction..  For a 2500 sq ft building of average insulation and envelope tightness in the northern climes, figure on a heat loss of 12,000 BTU per Heating Degree Day...   In other words if the average outside temp is 64 over a 24 hour period, and you wish to heat it to maintain 65 deg f, that would be 1 Degree Heating Day and you would have to generate a total of 12,000 BTU over that 24 hour period to maintain a 65 deg temperature.  

Thus the total amount of heating BTU's required annually for Waldoboro Maine where the average  annual degree heating is 7353 degrees, would be 12,000 BTU per Degree heating day x 7353 Degree Heating Days = 88.23  Million BTU's...    To find the total estimated heating cost, take the 88.23 Million BTU's and multiply by the cost per million BTU for the fuel you will be using.  For example: if oil costs $25 per million BTU, then you could expect an annual heating bill of  88.23 x $25 = $2205.00.  (There is a handy Fuel Cost Comparison chart elsewhere on this page.  I don't keep it updated often, so you'll have to obtain the current prices..   Click Here to Go To The Chart ).  That's assuming one maintains the home at 65 deg f...  But what if one desires or needs to maintain the home at 75 instead of 65 as is often the case for our Senior Citizens ???

To make the adjustment to determine the annual heating degrees, one must first determine the daily average. Here in Waldoboro Maine, the annual average annual heating degrees required  is 7353. To find the daily average, divide 7353 by 365 days in a year = 20.145.  Then add the number of additional degrees above 65 you would like to maintain the temperature at.  (if you want to heat to 75, then add the difference between 65 and 75, which is  75-65 = 10 deg to the daily average. The new adjusted daily average then becomes (20.145+10 = 30.145 average degree days.) Then multiply 30.145 x 365 days in a year to determine the annual degree heating days to maintain the building at 75 deg f (30.145*365= 11002.  Compared to the original 7353 based on maintaining 65 deg f, maintaining one's home temperature at 75 deg f will require an additional 3649 annual heating degree days or a 49% increase in your final heating bill.   (Those 3649 additional degree heating days will require 3649*12,000 BTU per degree or a total of an ADDITIONAL 43.7 Million BTU's...  This little exercise makes it pretty simple to calculate energy costs by maintaining your home at different temperatures...

Course, the actual BTU's required per heating degree, depends on how tight the building envelope is, the total effective R value, solar loading, burner efficiency etc, but it gets you in the ballpark and is valuable for estimating heating costs should you desire to "pull up stakes" and move to another area of the country.  Consider also that building structures in warmer climates, may have less insulation or often no insulation at all, with much higher BTU requirements per Heating Degree Day...

Locations in close proximity to the ocean or other large bodies of water are often warmer in winter and cooler in  summer than other locations often just a mile away from the water.

 

 

Why does the 7 Day Degree Heating Graph appear
like a saw tooth waveform during the heating season ?

Since the daily total resets to zero at midnight, so does the graph.  The ramp function is because the daily heating degree value is based on the AVERAGE outdoor temperature over a 24 hour period.  To derive the average temperature and compute the heating degrees, the program continues to sample the outdoor temperature at fixed intervals over each 24 hour daily period, then subtract that from 65 and then divide by the number of samples taken over the 24 hour period, then store the value in a matrix where all those time slices are then summed.   The end result is the final summation of Heating Degrees and is depicted by the peaks.  If this sounds like a description of an integral, that's because it is... By adding up all the little time slices wherein the measurements  were made, one is actually witnessing a live real time demo of the software performing a Calculus Integral function.

 

 

Heating Degree Day Normals
(base 65 f ) based on observation period 1961-1990
  Jan   Feb   Mar   Apr   May   Jun  Jul     Aug    Sep    Oct   Nov    Dec Annual
Maine Locations:
Augusta 1426 1212 1026 651 319 77 15 36 190 505 822 1271 7550
Bangor 1473 1266 1079 693 363 90 21 42 219 533 849 1302 7930
Belfast 1352 1168 995 657 344 88 14 29 180 484 780 1206 7297
Bridgton 3 NW 1482 1263 1082 708 347 102 19 61 238 564 873 1318 8057
Brunswick 1389 1184 1008 651 353 90 7 40 183 499 798 1218 7420
Corinna 1587 1364 1132 723 360 101 24 67 263 601 927 1414 8562
Eastport 1339 1170 1045 729 468 219 93 85 243 518 786 1181 7876
Ellsworth 1383 1201 1035 690 381 105 17 45 201 508 804 1234 7604
Farmington 1606 1372 1175 756 412 136 39 91 300 623 942 1414 8866
Jackman 1708 1484 1308 870 493 182 77 129 351 685 1023 1525 9835
Lewiston 1389 1184 1004 639 303 53 5 22 155 471 798 1221 7244
Long Falls Dam 1652 1436 1277 861 496 187 79 130 345 673 999 1476 9611
Madison 1566 1347 1138 729 388 110 24 65 254 589 903 1376 8489
Middle Dam 1674 1464 1287 876 505 200 98 139 339 688 1011 1491 9772
Portland 1370 1168 992 651 363 100 11 39 189 512 789 1194 7378
Rumford 1 SSE 1504 1280 1091 696 352 90 27 62 231 555 882 1339 8109
Sanford 2 NNW 1349 1148 961 609 278 58 7 30 158 471 786 1197 7052
Waldoboro 1361 1164 988 648 363 101 15 40 188 510 786 1189 7353
Waterville 1417 1196 1008 636 295 61 7 26 174 487 816 1259 7382
West Buxton 2 NNW 1463 1254 1060 693 369 107 21 62 241 574 867 1290 8001
New Hampshire Locations: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Benton 5 SW 1491 1282 1094 705 359 110 36 79 267 577 900 1333 8233
Berlin 1575 1352 1163 738 383 107 33 84 277 611 930 1392 8645
Bethlehem 1535 1308 1113 723 359 114 46 80 271 605 942 1380 8476
Blackwater Dam 1454 1243 1045 666 336 81 12 56 229 561 849 1280 7812
Colebrook 1634 1403 1212 798 446 168 77 123 326 657 975 1438 9257
Concord 1438 1210 1011 633 312 70 13 39 196 533 837 1262 7554
Deering 1361 1162 992 618 278 61 8 35 182 496 804 1228 7225
Durham 1327 1120 946 609 304 66 8 34 162 474 774 1178 7002
Epping 1327 1117 949 606 297 61 8 33 174 490 780 1181 7023
First Conn Lake 1755 1537 1358 900 521 222 106 164 381 719 1056 1544 10263
Franklin Falls Dam 1494 1266 1057 681 343 80 13 57 232 564 861 1308 7956
Grafton 1507 1280 1094 711 366 115 33 76 269 595 897 1333 8276
Greenland 1296 1100 939 624 325 78 14 43 177 477 753 1147 6973
Hanover 1463 1226 1023 633 289 54 10 24 176 530 849 1296 7573
Keene 1364 1145 952 576 251 44 0 20 148 471 777 1200 6948
Lancaster 1587 1350 1135 723 362 110 33 82 264 598 936 1404 8584
Lebanon 1491 1257 1048 660 321 73 16 47 206 543 855 1308 7825
Massabesic Lake 1376 1165 973 612 290 55 6 29 160 481 768 1200 7115
Monroe 5 NNE 1609 1380 1159 726 362 91 24 64 232 577 912 1395 8531
Mount Sunapee 1398 1201 1035 672 318 85 21 51 209 518 846 1259 7613
Nashua 2 NNW 1352 1162 967 609 283 62 7 25 162 493 798 1190 7110
North Conway 1488 1271 1073 693 338 82 22 69 239 580 885 1318 8058
North Stratford 1634 1445 1212 777 395 120 40 95 271 639 990 1438 9056
Peterboro 2 S 1367 1179 1008 648 329 93 25 49 216 524 822 1231 7491
Pinkham Notch 1575 1372 1225 837 474 197 85 148 363 685 993 1417 9371
Plymouth 1525 1308 1110 717 381 121 32 80 285 608 912 1352 8431
Surry Mountain Lake 1479 1263 1054 669 337 90 13 53 228 564 843 1293 7886
Tamworth 3 1541 1310 1113 729 406 132 42 102 306 639 912 1361 8593
Source: NOAA/NCDC publication Climatography of the U.S. #81

To find similar data for your area, go to NOAA's  National Climatic Data Center

 

Actual Heating Degree Days Recorded for Waldoboro, Maine 04572

** Historical Average based on the average of observations 1961-1990
Source: NOAA/NCDC publication Climatography of the U.S. #81

Heating Degree Days
(base 65 f )
  Jan   Feb   Mar   Apr   May   Jun  Jul     Aug    Sep    Oct   Nov    Dec Annual

For Waldoboro, Maine

Historical Average Monthly ** 1361 1164 988 648 363 101 15 40 188 510 786 1189 7353
Historical Average Running Total ** 1361 2525 3513 4161 4524 4625 4640 4680 4868 5378 6164 7353 7353
                           
2009 Monthly Totals 1518 1129 1024 546 305 189 119 87 286 628 712 1143 7686
2009 Running Totals 1518 2647 3671 4217 4522 4711 4830 4917 5203 5831 6543 7686 7686
2010 Monthly Totals 1255 982 828 536 338 160 43 93 190 519 776 1158 6875
2010 Running Totals 1255 2237 3062 3598 3936 4096 4139 4232 4422 4941 5717 6875 6875
2011 Monthly Totals 1374 1124 957 532 290 177 49 64 154 412 672 962 6767
2011 Running Totals 1374 2498 3455 3987 4277 4454 4503 4567 4721 5133 5805 6767 6767
2012 Monthly Totals 1134 1103 788 565 324                
2012 Running Totals 1134 2237 3025 3590 3914                

Total Rain 2010    52.19 inches
Total Rain 2011    37.56 inches

 


2008 Min - Max - Averages
Yearly rundown


 


2009 Min - Max - Averages
Yearly rundown


 


2010 Min - Max - Averages
Yearly rundown

Click Here for the current year Min - Max Rundowns computed to date  YTD Rundowns

Cooling Degree Day

Interpreting the graphs is the same as  Heating Degree Days.

The question most people have is why is  65 def f taken as the reference above which cooling is required ?  Most people feel a bit chilly  when the living space temperature  dips to 65 def f....   A clue as to the reason  lies in the actual living space temperature, and not the outside ambient temperature...   In most building envelopes, when the outside temp is 65, the actual living space temperature is often 75...   Many reasons for this but the most common are that appliances, lighting and even people themselves give off heat; enough in most cases to raise the internal living space temperature by at least 10 deg f, at which point, things start to feel uncomfortable. That is the reason why 65 deg f has been the agreed on cooling reference.

Wind Gust Strip Chart and Average Wind Speed Chart

 

 

There is some confusion as to what the wind gust strip recorder chart actually represents.

To the left are both the wind gust strip recorder chart and the averaged wind speed as captured 3-28-2008.  (Note: The wind gust chart spans the past 72 hours and the average wind speed chart spans only the last 90 minutes or so.)

At first glance, it would appear that looking at the wind gust chart, the current average for the past 90 minutes should be about 8 or 9 mph, and that at no time does it appear to drop below 8 mph.   Yet the wind speed average chart just below it, clearly shows only a 5 mph average wind speed.   How could this be ???

The confusion comes about as to what data makes up the wind gust strip chart and thus what the chart represents.

Each sample on the wind gust chart, represents not the instantaneous wind speed at any  particular moment, but rather ONLY the highest wind speed as sampled in the past 10 minutes. Thus it is only a strip chart of the max wind speeds detected over any 10 minute period.

By comparison, the average wind speed is the average of each and every instantaneous wind speed and then averaged also over a 10 minute period. This plot takes in to account all recorded wind speeds - even periods where the winds may have been dead calm.

* * * * * * *

To drive home the point even further, consider the following hypothetical scenario where the wind speed is sampled once each second. Over a 10 minute period (600 seconds), we will assume the wind remained dead calm for 9 minutes and 59 seconds and then gusted to 9 mph for just 1 second.

The wind gust strip chart would Only have plotted a value of 9 mph, since it only records the highest wind gust in any 10 minute period.

In contrast, the average wind speed would be only .015 mph   (The average being the sum of all elements (sampled wind speeds) divided by the total number of elements (samples). = S1 to S600 / # of total samples  = 9/600 = .015 mph) ...   A rather large difference between the two in the values to be plotted, but it highlights the differences in how the same data is presented in different ways.

... or for those that appreciate the simple elegance of calculus, then the average value of f between the limits a to b, is the integral
where A=Sample Start Point, B=Sample End 

Now you know !

 

Time Left until the arrival of the Winter Solstice: Dec 22, 2011  12:30 am EST - 05:30 UTC

(The Seasons countdown timer uses JavaScript to perform the calculations.  Users running Internet Explorer, must allow Active-X controls to allow Java to run, which is safe to allow anywhere on this site)

 

Temperature Conversions:  Fahrenheit - Centigrade - Celsius - Kelvin - Réaumur - Rankine

Values on initial page load are set to the freezing point of water. To find others, enter a known value
in any  field, then left click outside the text box or press "Tab" to calculate for the other unknowns.


Fahrenheit:  F  
Celsius:
        C 
Kelvin:         K  
Rankine:
    Ra
Réaumur:   Re

 

Wind Chill Calculator

Enter a temperature and wind speed to be calculated
What the temperature feels like to your body:
Fahrenheit Celsius   °F
mph knots m/s k/h   °C

 Enter a temp =<40 F and a wind speed =/> 3mph, 2.6 kts, 1.35 m/sec or 4.83 Km/hr

  Watts per Meter ²
             

Find the formula used by clicking HERE     (will open in a new window and take you to NOAA)

Note: Wind speed calculations below 3mph are meaningless, since there is not enough wind force to significantly disturb  the air boundary layer.
Outside ambient temps above 40f rarely account for significant wind chills, and are thus not calculated

Fahrenheit  

Daniel Gabriel Fahrenheit (1686-1736):  the German physicist who invented the alcohol thermometer in 1709, and the mercury thermometer in 1714. In 1724, he introduced the temperature scale that bears his name.

The freezing point of water is 32 degrees Fahrenheit (written "32 °F"), whereas the boiling point is defined as 212 degrees. - How the seemingly arbitrary zero point was determined, is still open to debate.  

Used primarily in the US.

Celsius and Centigrade:

The Celsius scale, invented by Swedish Astronomer Anders Celsius (1701-1744),  is also referred to as the Centigrade scale. Centigrade means "consisting of or divided into 100".

Celsius (Centigrade) takes it's zero reference as being the freezing point of water, whereas 100 deg C  is set at the boiling point of water.  This equates to a temperature span of 1 deg C  & K,  as being precisely 1 part in 273.15 parts the difference between absolute zero and 0 deg C - or the freezing point of water at 1 atmosphere pressure.

More conducive to the metric system, degrees Celsius is more widely adopted in European countries, Canada and in engineering.

Kelvin

Lord William Thomson Kelvin expanded on the earlier work of Celsius and introduced the Kelvin Scale in 1848. The Kelvin Scale measures the ultimate extremes of hot and cold. -

Degrees Kelvin is the often preferred scientific notation of measuring temperature.    A temperature differential of one degree Kelvin is the same temperature differential as one degree Celsius . The only difference between Celsius and Kelvin being that Kelvin uses 0 degrees to define Absolute Zero, which is -273.15°C.  (thus 273.15K = 0°C).

Degrees Kelvin is used almost strictly in engineering.

Rankine °R (or °Ra). 

William John Macquorn Rankine  (1820-1872) was a Scottish engineer, known for his Rankine temperature scale & putting forth a thermodynamic theory stating the Law of Conservation of Energy (1853).

As with the Kelvin scale (symbol: K), zero on the Rankine scale is absolute zero, but the Rankine degree is defined as equal to one degree Fahrenheit, rather than the one degree Celsius as used by the Kelvin scale. Thus a temperature of -459.67 °F is precisely equal to 0 °R.   

Degrees Rankine is used primarily in engineering.

Réaumur

The Réaumur scale (°Ré) is a temperature scale named after René Antoine Ferchault de Réaumur, who first proposed it in 1731.

The freezing point of water is 0 degrees Réaumur, while the boiling point of water is defined as 80 degrees Réaumur. Exactly how René arrived at 80 as being the boiling point of water, is open to some conjecture. It's is hypothesized that it was chosen since the number 80 could be halved 4 times and still be an integer (40, 20, 10, 5 making scales easier to read). By contrast, the number 100, could only be halved twice and still remain an integer (50, 25).  The other  is that the volume of displacement for each degree in his thermometer was to represent 1/1,000th the volume of the bulb. Using that metric, water boiled at  80 °Ré.    Whatever his logic, the scale is no longer used, except in the traditional making of some Italian Cheeses.

 

Note:  The abnormal monthly rainfall for November, 2007 is the result of re-calibrating the rainfall rate to reflect the correct yearly total.
Total annual 2008 Rainfall reset to zero 1-1-2008    -   2007 Total Rainfall was 51.31 inches

For even more info and this stations' historical data:    Historical Data

  Forecast for Waldoboro at Weather Underground:          Forecast     

You will be then be leaving Video Interchange and be directed to The Weather Underground ® that records & charts our historical data.
(Click "Back" or "Return" on your browser to return to this page)

* Cloud Base Measurements  

We're often asked: How exactly do we determine the cloud base ?     (height of the lowest part of the cloud (cloud base) compensated for Mean Sea Level).

In days of old, cloud base was often determined by stereoscopic instruments that used simple range finding techniques often performed by a technician, or in other cases, reported via more direct means such as live pilot reports, known as Pireps...   Though reasonably accurate during daytime hours with adequate light, night-time data was most accurately derived from  pireps  at most major airports. In other words: cloud base (especially in reduced visibility)  was often determined when the approaching aircraft finally "broke out" of the slop on an ILS (Instrument Landing System) approach to reveal either the "Rabbit" (sequenced strobes leading the approaching aircraft on final, to the runway threshold) or the runway marker lights themselves. Later optical rangefinder based systems were partially automated, but accuracy left something to be desired and cloud base data was available normally only at the major airports or Govt weather sites.

Today, such cloud base measurements have been replaced with LIDAR  (LIght Detection And Ranging) that emits a pulsed laser beam, and measures the time it takes for any reflection from the cloud base to be returned.  Perhaps a bit over-simplified (ok... way over-simplified), but nothing more than an over glorified laser pointer/cat laser toy,  but aimed vertically.  Only real difference is that the laser is pulsed & the ceilometer microcode simply measures the time it takes for any reflection off the cloud base to be returned.  Conceptually, the same as radar, but instead, uses light in the form of a pulsed laser, instead of microwaves.    Since the speed of light in our atmosphere is known to a great deal of precision, the time it takes for any reflection from the cloud base to be reflected back & reach the sensor, equates to a highly accurate measurement.  Cloud base measurements are now automatically determined, often accurate to within  +/- 14 feet, & up to a height of 60,0000 feet and available 24/7.  (the CL3  is only capable of up to 25,000 ft)....  Since the base of many cloud types are not well defined, the software averages the past 20 samples to calculate the height of the lowest cloud layer. LIDAR technology makes accurate cloud/ceiling measurements, affordable even to the private /personal weather stations...  The pulsed beam instead of being visible, operates at a wavelength of 910nm which is solidly into the the infrared  - just outside the visible spectrum of from 380 to 750nm. The long wavelength, also is much better able to penetrate and negate the effects of haze.     Thus there is no visible laser beam to draw attention or aggravate our neighbors !   (though much more powerful than a tv remote, it's visibly as innocuous as the laser "beam" emitted by  your TV remote control )...

A visibility measuring device was also considered for this station, however the WebCam image would seem to more than suffice for practical purposes ! 

 

Groundhog Day - Candlemas

Perhaps in light of the CRU and the IPCC falsifying data to fit their political agendas, perhaps in some twisted way, Punxsutawney Phil on Groundhog Day may be a far better prognosticator of future weather conditions. At least he doesn't call sunny, overcast, or pouring down rain, sunny conditions...  and its doubtful he has any knowledge of hockey stick graphs !

 Anyways, It's no accident that Groundhog Day and Candlemas are celebrated together, for both are closely related... each signifying the triumph of light over darkness, spring over winter.

Candlemas was originally a Celtic festival marking the midpoint of the season.  Why Feb 2nd ???    Feb 2nd most years marks the Sun's declination as being halfway in its advance from the winter solstice to the spring equinox.  It was not without religious ties as well...  The Christian church expanded this festival of light to commemorate the purification of the Virgin Mary and her presentation of the infant Jesus in the Temple. Candlelit processions accompanied the feast day. A central part of the festivities was the forecasting of either the arrival of an early spring or a winter that would linger. Sunshine on Candlemas was said to indicate the return of winter. Similarly, "When the wind’s in the east on Candlemas Day , there it will stick till the second of May."

A bear was the "bearer"  (pun brazenly intended) of the forecast to the people of France and England, while those in Germany adopted the badger as their prognosticator. In the 1800s, German immigrants to Pennsylvania brought with them their Candlemas legends.  Problem was; seems there were no badgers in the area !   What to do ???  There were however lots of groundhogs.  Ergo: the groundhog became the New World's recognized prognosticator of whether or not we would have an early or late spring.

Today that lore has grown into a full-blown festival in no other than Punxsutawney, Pennsylvania, with Punxsutawney Phil presiding for over the past 120 years as of 2010. For all things groundhog, visit  the 
folks at Punxsutawney and see what Phil is predicting this year.  Beware: on Feb 2, it might be difficult to establish a connection, as their servers get "pounded"...   Also Wikipedia has some interesting information including Phil's historical predictions dating from 1887 to 2010. http://en.wikipedia.org/wiki/Groundhog_Day

Punxsutawney Phil isn't the only groundhog to make predictions....

There is also.....

Balzac Billy Balzac Alberta Canada
Buckeye Chuck Marion, Ohio
Dunkirk Dave Dunkirk, NY
French Creek Freddie French Creek, WV
General Beauregard Lee Snelville, Georgia
Jimmy the Groundhog Sun Prairie, Wisconsin
Malverne Mel Malverne,NY
Octoraro Orphie Quarryville, PA
Queen Charlotte Charlotte, NC
Roxboro Naba Philadelphia, PA
Shubenacadie Sam Shubenacadie, Nova Scotia Canada
Sir Walter Willy Raleigh, NC
Spanish Joe Spanish Ontario Canada
Staten Island Chuck Staten Island, NY
West Indies Wilbur British West Indies
Wianton Willie Wiorton, Ontario Canada
Woodstock Willie Woodstock, Illinois

Yet Punxsutawney Phil is the one most widely recognized...

Lore or not, there must be something to it....  even NOAA officially credits Punxsutawney Phil with his observations.

 http://www.ncdc.noaa.gov/oa/climate/extremes/2006/groundhog.html    

If Candlemas be fair and bright,
Winter has another flight.
If Candlemas brings clouds and rain,
Winter will not come again.


 

Season Dates and Times

Year

Spring (EDT) - Vernal Equinox Summer Solstice (EDT) Fall - Autumnal Equinox (EDT) Winter Solstice (EDT)
2008 MAR 20  148 AM EDT - 0548 UTC JUN 20  759 PM EDT - 2359 UTC SEP 22  1144 AM EDT - 1544 UTC DEC 21   704 AM EST - 1204 UTC
2009 MAR 20  744 AM EDT - 1144 UTC JUN 21   145 AM EDT - 0545 UTC SEP 22   518 PM EDT - 2118 UTC DEC 21  1247 PM EST - 1747 UTC
2010 MAR 20   132 PM EDT - 1732 UTC JUN 21   728 AM EDT - 1128 UTC SEP 22  1109 PM EDT - 0309 UTC 9-23  DEC 21   638 PM EST - 2338 UTC
2011 MAR 20   721 PM EDT - 2321 UTC JUN 21  116 PM EDT - 1716 UTC SEP 23   504 AM EDT - 0904 UTC DEC 22  1230 AM EST - 0530 UTC
2012* MAR 20   114 AM EDT - 0514 UTC JUN 20   709 PM EDT - 2309 UTC SEP 22  1049 AM EDT - 1449 UTC DEC 21   611 AM EST - 1111 UTC
2013 MAR 20   702 AM EDT - 1102 UTC  JUN 21   104 AM EDT - 0504 UTC SEP 22   444 PM EDT - 2044 UTC DEC 21  1211 PM EST - 1711 UTC
2014 MAR 20  1257 PM EDT - 1657 UTC JUN 21   651 AM EDT - 1051 UTC SEP 22  1029 PM EDT - 0229 UTC 9-23 DEC 21   603 PM EST - 2303 UTC
2015 MAR 20   645 PM EDT - 2245 UTC JUN 21  1238 PM EDT - 1638 UTC SEP 23 2 420 AM EDT - 0820 UTC DEC 21  1148 PM EST - 0438 UTC 12-22
2016 MAR 20  1230 AM EDT - 0430 UTC JUN 20   634 PM EDT - 2234 UTC SEP 22  1021 AM EDT - 1421 UTC DEC 21   544 AM EST - 1044 UTC
2017 MAR 20   628 AM EDT - 1028 UTC JUN 21  1224 AM EDT - 0424 UTC SEP 22   402 PM EDT - 2002 UTC DEC 21  1128 AM EST - 1628 UTC
2018 MAR 20  1215 PM EDT - 1615 UTC JUN 21   607 AM EDT - 1007 UTC SEP 22   954 PM EDT - 0154 UTC9- 23 DEC 218  522 PM EST - 2222 UTC
2019 MAR 20   558 PM EDT - 2158 UTC JUN 21 1154 AM EDT - 1554 UTC SEP 23   350 AM EDT - 0750 UTC DEC 21  1119 PM EST - 0419 UTC 12-22
2020 MAR 19  1149 PM EDT - 0349 UTC 3-20 JUN 20   543 PM EDT - 2143 UTC  SEP 22   930 AM EDT - 1330 UTC DEC 21   502 AM EST - 1002 UTC

* After more than 5000 years since the start of the last Great Cycle Aug 11, 3114 BC, the Mayan Calendar ends Dec 12, 2012 11:11 am UTC,  after which the rest of the data in the table may be meaningless !
(Thought that might cheer everyone up !)

To view  today's date using the Mayan Calendar depicting it as Mayan Glyphs, refer to  this link:  http://www.pagetworld.co.uk/mayan.php

Other interesting reading re: the Mayan Calendar  http://www.greatdreams.com/2012.htm

 

Sunrise Sunset Length of Day, Solar Noon, Inclination, and Distance Tables
for Waldoboro, ME 2009-2010

 

2011

2012

For a Dept of the Navy - Observatory Excel XLS file colon delineated for time version,  CLICK HERE

 

Current Severe Weather Warnings and Advisories - (polled for updates every 10 minutes)  Server - 2
 

No Warnings

Current 7 Day Forecast:  (polled for updates every 2 hrs)

Converted from "mez026.txt" on 29-Jun-2012 by AscToHTM 5.0
Expires:201206300645;;216867
Fpus51 Kgyx 291639
Zfpgyx
Zone Forecasts For New Hampshire And Western Maine
National Weather Service Gray Me
1239 Pm Edt Fri Jun 29 2012

Mez026. 300645.
Lincoln.
Including The Cities Of Boothbay Harbor Wiscasset Waldoboro
1239 Pm Edt Fri Jun 29 2012

THIS AFTERNOON: Partly Sunny With A Slight Chance Of Showers And
Thunderstorms. Some Thunderstorms May Be Severe With Damaging
Winds Large Hail And Heavy Rainfall. Highs Around 80. South Winds
Around 10 Mph With Gusts Up To 25 Mph. Chance Of Rain 20 Percent.

TONIGHT: Partly Cloudy In The Evening Then Clearing. Patchy Fog
After Midnight. Lows In The Lower 60s. South Winds Around 10 Mph
With Gusts Up To 20 Mph In The Evening Becoming Light And
Variable.

SATURDAY: Mostly Sunny. Highs In The Mid 80s. West Winds Around
10 Mph.

SATURDAY NIGHT: Partly Cloudy. Lows In The Lower 60s. Southwest
Winds Around 10 Mph In The Evening Becoming Light And Variable.

SUNDAY: Partly Sunny. Highs In The Mid 80s. Light And Variable
Winds Becoming West Around 10 Mph In The Afternoon.

SUNDAY NIGHT: Partly Cloudy. Lows In The Lower 60s.

MONDAY: Mostly Cloudy With A Chance Of Showers And Thunderstorms.
Some Thunderstorms May Produce Gusty Winds And Small Hail. Highs In
The Upper 70s. Chance Of Rain 40 Percent.

MONDAY NIGHT: Mostly Cloudy With A 50 Percent Chance Of Showers.
Lows Around 60.

TUESDAY: Partly Sunny With A Chance Of Showers. Highs In The Upper
70s. Chance Of Rain 50 Percent.

TUESDAY NIGHT: Partly Cloudy In The Evening Then Becoming Mostly
Cloudy. Lows In The Upper 50s.

INDEPENDENCE DAY: And Wednesday Night Partly Cloudy. Highs In The
Lower 80s. Lows In The Lower 60s.

THURSDAY: Mostly Cloudy In The Morning Then Becoming Partly
Sunny. Highs Around 80.
$$



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Warnings & Advisories

7 Day Forecast

Last Modified: May 31, 2012

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