BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, FEBRUARY 27, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 7 A.M. Weather: Clear Temperature: 16F, Dew point: 5F, Wind: W at 15 kt Sea-level pressure: 30.19 inches Hg, rising Visibility: 40 miles BHO SA 1155 CLR 40 222/16/5/2715G20/019/ K LYR ALNG HRZN SW VSBY SW 25/ 8/000 4/007 53012 10020 20015 10 A.M. Weather: Clear Temperature: 23F, Dew Point: 4F, Wind: W at 19 kt Visibility: 75 miles Sea-level pressure: 30.18 inches Hg, steady BHO SA 1455 CLR 75 200/23/4/2719G24/019/ PK WND 2729/37/ 8/000 58002 1 P.M. Weather: Clear Temperature: 29F, Dew Point: 0F, Wind: W at 20 kt Visibility: 75 miles Sea-level pressure: 30.08 inches Hg, falling BHO SA 1755 CLR 75 187/29/0/2720G29/008/ PK WND 2729/52/ 8/000 58013 10030 20016 WEATHER SUMMARY FOR SUNDAY, FEBRUARY 26: TEMPERATURE (DEGREES F) MAX.....34 NORMAL.....39 ASOS.....32 AT 2:14 P.M. MIN.....14 NORMAL.....23 ASOS.....14 AT 7:19 A.M. MEAN....24 NORMAL.....31 DEPARTURE FROM 30-YEAR NORMAL......-7 TOTAL DEPARTURE FOR THE MONTH.....+61 (+2.3 DEGREES/DAY) HEATING DEGREE DAY INFORMATION TOTAL HEATING DEGREE DAYS FOR FRIDAY.........41 DEPARTURE.....+7 TOTAL HEATING DEGREE DAYS FOR THE MONTH.....899 DEPARTURE....-61 TOTAL HEATING DEGREE DAYS FOR THE SEASON...4379 DEPARTURE...-123 TOTAL HEATING DEGREE DAYS FOR LAST YEAR....4511 DIFFERENCE..-173 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........25 NW AT 11:15 P.M. AEROVANE.........28 NW AT 11:17 P.M. ASOS.............23 WNW AT 11:20 P.M. FASTEST MILE FOR YESTERDAY..........21 NW AT 11:21 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......21 WNW AT 11:20 P.M. AVERAGE WIND SPEED AND DIRECTION...8.3 WNW ASOS............8.8 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.15 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.30 DEPARTURE....-0.46 ASOS..............3.12 TOTAL PRECIPITATION FOR THE YEAR...........9.54 DEPARTURE....+1.00 ASOS..............8.95* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.5 TOTAL SNOWFALL FOR THE MONTH...............16.9 DEPARTURE.....+1.9 TOTAL SNOWFALL FOR THE SEASON..............85.7 DEPARTURE....+41.3 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2005......CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 2/1 38/18/28/+2/0/0/600/100 13 MPH NNW 2/2 35/20/28/+2/0/0/549/91 23 MPH N 2/3 36/20/28/+2/0.28/0.2/012/02 27 MPH NNE 2/4 33/30/32/+6/0.02/0.1/000/00 33 MPH N 2/5 49/30/40/+13/0/0/605/99 30 MPH N 2/6 41/30/36/+9/0/0/613/100 31 MPH N 2/7 50/29/40/+13/0/0/400/65 22 MPH S 2/8 47/36/42/+15/0/0/012/02 24 MPH SSW 2/9 50/36/43/+16/0.01/0/099/16 25 MPH W 2/10 38/30/34/+7/0.97/2.9/000/00 32 MPH NNW 2/11 30/21/26/-1/0.05/0.5/451/72 44 MPH WNW Aero 51 MPH WNW 2/12 36/24/30/+2/0/0/182/29 36 MPH W 2/13 37/21/29/+1/0/0/429/68 27 MPH WNW 2/14 38/19/29/+1/0.06/0.1/323/51 38 MPH SE 2/15 48/36/42/+14/0.58/0/293/46 52 MPH SE Aero 53 MPH SE 2/16 52/33/43/+15/0.17/0/160/25 42 MPH S Aero 43 MPH S 2/17 38/26/32/+3/0/0/417/65 30 MPH W Aero 30 MPH W 2/18 33/14/24/-5/0.01/0.2/316/49 37 MPH W 2/19 26/9/18/-11/0/0/576/89 31 MPH WNW Aero 33 MPH WNW 2/20 30/17/24/-5/0/0/598/92 28 MPH W 2/21 31/21/26/-3/0.60/5.2/000/00 32 MPH E 2/22 29/21/25/-5/0.05/0.6/000/00 24 MPH NNW 2/23 34/19/27/-3/0.03/0.4/342/52 30 MPH W 2/24 26/10/18/-12/..../.../.../.. 25 MPH NW 2/25 30/16/23/-8/..../.../.../.. 26 MPH NNW 2/26 34/14/24/-7/0/0/.../.. 25 MPH NW DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 27 HIGH 61F IN 1976 LOW -8F IN 1900 PRECIP 0.90 INCHES IN 1922 SNOWFALL 6.0 INCHES IN 1922 PEAK GUST 67 MPH W IN 1985 RECORDS FOR FEBRUARY 28 HIGH 62F IN 1976 LOW -2F IN 1907,1934 PRECIP 0.64 INCHES IN 1968 SNOWFALL 3.5 INCHES IN 1968 PEAK GUST 60 MPH NE IN 1968 TODAY’S REPORT BY: Andrew Hoell