BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MARCH 23, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED Today's observations: 8 A.M. EDT Weather: Clear Temperature: 26F, Dew point: 4F Wind: W at 15G20 kt Sea-level pressure: 30.05 inches Hg, rising Visibility: 80 miles 6-hour min temp: 24F BHO SA 1155 CLR 80 176/26/4/2715G20/005/ FEW THN CI DSNT W AND E/ 8/001 53018 10028 20024 11 A.M. EDT Weather: Clear Temperature: 35F, Dew point: 3F, Wind: W at 11G18 kt Sea-level pressure: 30.08 inches Hg, rising Visibility: 80 miles BHO SA 1455 CLR 80 187/35/3/2711G18/008/ FEW THN CI W/ 8/001 53011 2 P.M. EDT Weather: Clear Temperature: 40F, Dew point: 3F, Wind: W at 12G18 kt Sea-level pressure: 30.08 inches Hg, steady Visibility: 80 miles 6-hourly max. temp. 40F BHO SA 1755 CLR 80 186/40/3/2712G18/008/ FEW THN CI DSNT NW WND 24V35/ 8/001 58001 10040 20026 WEATHER SUMMARY FOR SATURDAY, MARCH 22 TEMPERATURE (DEGREES F) MAX.....45 NORMAL.....47 MIN.....25 NORMAL.....30 MEAN....35 NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL...........-3 TOTAL DEPARTURE FOR THE MONTH..........+31 [+1.1 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............30 DEPARTURE........+3 TOTAL HEATING UNITS FOR THE MONTH...........631 DEPARTURE.......-35 TOTAL HEATING UNITS FOR THE SEASON.........4879 DEPARTURE......-357 TOTAL HEATING UNITS LAST SEASON TO DATE....4804 DIFFERENCE......+75 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............44 W AT 1:50 A.M. AEROVANE.............42 W AT 1:50 A.M. ASOS.................41 WNW AT 12:21 A.M. DAVIS................43 WSW AT 1:51 A.M. FASTEST MILE FOR YESTERDAY..............29 W AT 1:50 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........30 W AT 1:52 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........N/A AVERAGE WIND SPEED AND DIRECTION........17.9 W ASOS.................16.9 DAVIS................18.6 W [268 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE......-0.16 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........5.14 DEPARTURE......+1.75 ASOS..............5.11 TOTAL PRECIPITATION FOR THE YEAR..........17.18 DEPARTURE......+4.95 ASOS.............19.42 # # Includes erroneous ASOS precipitation data on 2/13/08. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.3 TOTAL SNOWFALL FOR THE MONTH................6.3 DEPARTURE.....-2.9 TOTAL SNOWFALL FOR THE SEASON..............66.4 DEPARTURE....+11.8 PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 3/1 37/20/29/-3/0.34/3.2/034/05 38 W Aero 40 MPH W 3/2 37/23/30/-2/0/0/564/83 40 WNW 3/3 46/24/35/+3/0/0/327/48 42 S Aero 43 MPH S 3/4 58/36/47/+14/0.41/0/089/13 42 S Aero 43 MPH S 3/5 57/33/45/+12/0.31/0/199/29 45 S 3/6 46/27/37/+4/0/0/573/83 27 WSW 3/7 44/31/38/+5/0.28/0/395/57 29 NE 3/8 61/35/48/+14/2.20/0/000/00 69 SSW Aero 70 MPH S 3/9 47/24/36/+2/0/0/698/100 65 W Aero 65 MPH W 3/10 38/19/29/-5/0/0/687/98 31 W 3/11 42/19/31/-4/0/0/690/98 31 S 3/12 40/30/35/0/0.26/0.6/120/17 41 WNW 3/13 43/25/34/-1/T/T/490/69 31 W 3/14 53/30/42/+6/0.01/0/135/19 24 ENE 3/15 37/32/35/-1/0.51/1.9/000/00 39 NNE 3/16 40/31/36/0/T/T/014/02 42 WNW Aero 42 MPH WNW 3/17 41/25/33/-4/0/0/692/96 42 WNW Aero 39 MPH WNW 3/18 43/24/34/-3/0.02/0.1/.../.. 22 NNE 3/19 43/30/37/0/.../0.5/000/00 28 ESE 3/20 50/32/41/+3/.../0/007/01 51 W 3/21 38/26/32/-6/0/0/.../.. 61 W Aero 58 MPH W 3/22 45/25/35/-3/0/0/.../.. 44 W Aero 44 MPH W NEW DAILY RECORDS FOR MARCH 2008 3/8 PEAK WIND GUST - 69 MPH SSW; PREVIOUSLY 68e MPH NE, 1941 3/8 NEW RECORD MAXIMUM DAILY RAINFALL of 2.20 inches; the previous record was 1.73 inches in 1933. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 23 HIGH 78 IN 1938 LOW 3 IN 1934 PRE 1.58 INCHES IN 1903 SNOW 3.0 INCHES IN 1977 WIND 78e MPH W IN 1940 RECORDS FOR MARCH 24 HIGH 70 DEGREES IN 1920 LOW 6 DEGREES IN 1906 PRECIP 1.51 INCHES IN 1956 SNOWFALL 12.3 INCHES IN 1956 PEAK GUST 71 MPH W IN 1968 TODAY'S REPORT PREPARED By: Andrew Hoell