BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, FEBRUARY 27, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME FEBRUARY PRECIPITATION TOTAL IS OVER 8 INCHES, MOST SINCE THE RECORD OF OVER 9 INCHES IN 1969 Yesterday afternoon and evening's precipitation was almost entirely in the form of rain but some flakes of snow were mixed in during the afternoon. However, an increasing east wind sent the temperature up to 40 degrees during the evening and light rain fell moderately for a time. Our total of 0.32 inch pushed the February total up to 8.08 inches, the most for this month since over 9 inches was recorded in 1969. Today's observations: 7 A.M. Weather: Obscurement with heavy fog Temperature: 32F, Dew point: 32F, Wind: W at 6 kts Sea-level pressure: 29.30 inches Hg, rising Visibility: 1/8 mile 6-hour min temp: 32F 24-hour precipitation: 0.32 inch Total snow on ground: 3 ins. BHO SA 1155 W3 X 1/8F 921/32/32/2606/930/ 8//// 4/003 53015 ASOS 70030 MANUAL 70032 10034 20032 10 A.M. Weather: Partial obscurement, overcast stratus, fog obscuring 3/8 of sky Temperature: 34F, Dew point: 34F, Wind: SW at 7 kts Sea-level pressure: 29.34 inches Hg, rising Visibility: 1.5 miles, variable 0.75 to 2.0 miles, north 0.25 mile, fog BHO SA 1455 -X E3 OVC 11/2VF 936/34/34/2307/934/ F3 STRA DRFTG OVR SMT VSBY 3/4V2 N 1/4/ 8/6// 53015 1 P.M. Weather: Overcast stratocumulus, small break in overcast Temperature: 38F, Dew point: 31F, Wind: W at 13 kts, Wind: gust to 19 knots past hour, variable in direction from SW-WNW Sea-level pressure: 29.33 inches Hg, falling Visibility: 20 miles, hazy 6-hour max. temp: 38F BHO SA 1755 E18 OVC 20 933/38/31/2613/933/ SML BINOVC HAZY GST TO 19 KTS PST HR WND 23V29/ 8/5// 58003 10038 20032 WEATHER SUMMARY FOR TUESDAY, FEBRUARY 26 TEMPERATURE (DEGREES F) MAX.....40 NORMAL.....39 MIN.....29 NORMAL.....23 MEAN....35 NORMAL.....31 DEPARTURE FROM 30-YEAR NORMAL...........+4 TOTAL DEPARTURE FOR THE MONTH..........+79 [+2.8 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............30 DEPARTURE.......-4 TOTAL HEATING UNITS FOR THE MONTH...........881 DEPARTURE......-85 TOTAL HEATING UNITS FOR THE SEASON.........4118 DEPARTURE.....-384 TOTAL HEATING UNITS LAST SEASON TO DATE....4030 DIFFERENCE.....+88 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............36 E AT 8:54 P.M. AEROVANE.............37 E AT 8:54 P.M. ASOS.................36 E AT 8:55 P.M. DAVIS................34 E AT 8:54 P.M. FASTEST MILE FOR YESTERDAY..............29 E AT N/A MAXIMUM 2-MINUTE ASOS AVERAGE...........28 E AT 8:55 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........29 E AT 8:55 P.M. AVERAGE WIND SPEED AND DIRECTION...... 9.7 E ASOS................9.6 DAVIS..............10.0 ESE [120 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.32 DEPARTURE......+0.17 ASOS..............0.30 TOTAL PRECIPITATION FOR THE MONTH..........8.08 DEPARTURE......+4.32 ASOS..............N/A # TOTAL PRECIPITATION FOR THE YEAR..........11.95 DEPARTURE......+3.41 ASOS..............N/A # # ASOS PRECIPITATION DATA ERROR ON 2/13/08 MONTHLY AND 2008 ASOS TOTAL NOT AVAILABLE SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.5 TOTAL SNOWFALL FOR THE MONTH...............15.1 DEPARTURE.....+0.1 TOTAL SNOWFALL FOR THE SEASON..............59.2 DEPARTURE....+14.8 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2008 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, records not finalized 2/1 53/26/40/+14/1.16/0.1/000/00 54 SSE Aero 59 MPH SSE TSTM 2/2 51/34/43/+17/T/0/391/65 52 SW Aero 52 MPH SW 2/3 45/33/39/+13/0/0/381/63 21 SW 2/4 38/29/34/+8/0/0/006/01 18 SE 2/5 45/33/39/+12/0.42/0/000/00 36 SE Aero 37 MPH SE 2/6 46/34/40/+13/0.88/0/000/00 36 NE Aero 33 MPH NE TSTM 2/7 34/26/30/+3/0.59/1.9/000/00 40 NE Aero 40 MPH NE TSTM 2/8 28/24/26/-1/0.08/0.5/000/00 21 W 2/9 36/21/29/+2/0.09/1.0/118/19 30 ESE 2/10 40/11/26/-1/0.08/0.9/068/11 56 W Aero 61 MPH W 2/11 22/7/15/-12/0/0/612/98 56 W Aero 60 MPH W 2/12 26/9/18/-10/0.27/2.0/351/56 25 W 2/13 53/22/38/+10/2.80/1.0/000/00 52 S Aero 54 MPH S 2/14 36/26/31/+3/0/0/517/82 39 WNW 2/15 46/24/35/+7/0/0/406/64 47 W Aero 50 MPH W 2/16 29/16/23/-5/0/0/586/92 32 W 2/17 44/18/31/+2/0.02//0/415/65 43 SSE Aero 43 MPH SSE 2/18 59/37/48/+19/0.55/0/006/01 69 S Aero 70 MPH S 2/19 43/22/33/+4/0.02/0.2/600/93 44 SSW Aero 46 MPH SSW 2/20 28/18/23/-6/0/0/480/74 36 W 2/21 29/14/22/-7/0/0/650/100 28 W 2/22 29/18/24/-6/0.80/7.5//000/00 28 N 2/23 31/21/26/-4/T/T/013/02 21 NNW 2/24 37/15/26/-4/0/0/639/97 24 WNW 2/25 46/24/35/+4/0/0/602/91 23 W 2/26 40/29/35/+4/0.32/T/000/00 36 E Aero 37 MPH E 2/27 morning low temp. 32F; our normal low is now 23F NEW DAILY RECORDS FOR FEBRUARY 2008: 2/13 - New record daily precipitation 2.80 inches; surpasses previous record of 1.90 inches in 1966 2/18 - New record peak wind gust of 69 MPH S; surpasses 65 MPH (estimated) NNW in 1952 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 1.79 INCHES IN 1958 SNOWFALL 8.5 INCHES IN 2005 PEAK GUST 88e MPH SSW IN 1943 TODAY'S REPORT PREPARED By: Robert Skilling