BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, FEBRUARY 19, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] LOW TEMPERATURE OF 9 COLDEST SINCE JANUARY 29... SUNNY AND COLD TODAY, BUT FEBRUARY CONTINUES VERY WARM... Morning clouds have moved off, leaving the sky mostly sunny by early afternoon. The morning low temperature of 9 is the coldest of the month and the lowest since 8 on January 29th. February is averaging more the six degrees warmer than normal per day. Visibility is good today at about 70 miles. The snow cover has become patchy on the summit, and now averages only a trace with many areas of bare ground. Today's observations: 7 A.M. Weather: Thin cirrus overcast with scattered AC and SC Temperature: 9F, Dew point: 0F, Wind: WNW 13 mph Sea-level pressure: 30.19 inches, rising Visibility: 50 miles BHO SA 1155 45 SCT 120 SCT 200 -OVC 50 222/9/0/3011/019/ SC DSNT OFFSHR NE-ESE TOTAL NEW SNW PST 24 HRS 0.1 IN/ 8/571 51027 10013 20009 10 A.M. Weather: Clear with a few cirrus Temperature: 15F, Dew Point: -1F, Wind: WNW 14 mph Visibility: 60 miles Sea-level pressure: 30.25 inches, rising BHO SA 1455 CLR 60 242/15/-1/2912/025/ CI NW-S FEW SC DSNT ESE WND 25V32/ 8/501 53020 1 P.M. Weather: Clear with a few distant cirrus Temperature: 21F, Dew Point: 0F, Wind: W 12 mph Visibility: 70 miles BHO SA 1755 CLR 70 229/21/0/2810/021/ FEW CI DSNT NE-ESE WND 25V34/ 8/001 56013 10022 20009 WEATHER SUMMARY FOR FRIDAY, FEBRUARY 18: TEMPERATURE (DEGREES F) MAX.....33 NORMAL.....37 ASOS.....32 AT 1:31 P.M. MIN.....14 NORMAL.....21 ASOS.....14 AT MIDNIGHT P.M. MEAN....24 NORMAL.....29 DEPARTURE FROM 30-YEAR NORMAL......-5 TOTAL DEPARTURE FOR THE MONTH....+115 (+6.2 DEGREES/DAY) HEATING DEGREE DAY INFORMATION TOTAL HEATING DEGREE DAYS FOR FRIDAY.........41 DEPARTURE.....+5 TOTAL HEATING DEGREE DAYS FOR THE MONTH.....564 DEPARTURE...-119 TOTAL HEATING DEGREE DAYS FOR THE SEASON...4044 DEPARTURE...-175 TOTAL HEATING DEGREE DAYS FOR LAST YEAR....4278 DIFFERENCE..-234 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........37 W AT 6:08 P.M.* AEROVANE.........38 W AT 6:08 P.M. ASOS.............33 W AT 6:08 P.M. DAVIS............35 W AT 4:58 P.M. FASTEST MILE FOR YESTERDAY..........27 W AT 5:58 P.M.* MAXIMUM 2-MINUTE ASOS AVERAGE.......28 W AT 4:58 P.M. AVERAGE WIND SPEED AND DIRECTION..15.5 W ASOS...........15.0 *Last of two occurances. PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE DEPARTURE....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.15 DEPARTURE....-0.44 ASOS..............2.09 TOTAL PRECIPITATION FOR THE YEAR...........8.39 DEPARTURE....+1.02 ASOS..............7.92* *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..........0.1 DEPARTURE.....-0.4 TOTAL SNOWFALL FOR THE MONTH................4.0 DEPARTURE.....-7.0 TOTAL SNOWFALL FOR THE SEASON..............72.8 DEPARTURE....+32.4 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/.../.. 30 MPH W Aero 30 MPH W 2/18 33/14/24/-5/0.01/0.2/.../.. 37 MPH W Aero 38 MPH W 2/19 ..overnight low 9 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 19 HIGH 66F IN 1981 LOW -5F IN 1923 PRECIP 2.73 INCHES IN 1972 SNOWFALL 12.0 INCHES IN 1893 PEAK GUST 76 MPH ENE IN 1972 RECORDS FOR FEBRUARY 20 HIGH 66F IN 1930 LOW -4F IN 1966 PRECIP 1.90 INCHES IN 1934 SNOWFALL 15.0 INCHES IN 1921,1934 PEAK GUST 78 MPH NW IN 1972 TODAY'S REPORT BY: Mike Iacono