BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MARCH 31, 2006 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Clear Temperature: 46F, Dew point: 33F, Wind: WSW at 14 kt Sea-level pressure: 30.24 inches Hg, rising Visibility: 8 miles with haze BHO SA 1155 CLR 8H 241/46/33/2414/024/ VSBY E-S 2V5/ 8/000 51006 10047 20043 10 A.M. Weather: Thin scattered cirrus Temperature: 64F, Dew point: 33F, Wind: SSW at 16 kt Sea-level pressure: 30.21 inches Hg, falling Visibility: 12 miles with haze BHO SA 1455 250 -SCT 12 232/64/33/2016/021/ HAZY/ 8/001 58009 WEATHER SUMMARY FOR THURSDAY, MARCH 30 TEMPERATURE (DEGREES F) MAX.....65 NORMAL.....50 ASOS.....65 AT 3:30 P.M. MIN.....41 NORMAL.....32 ASOS.....41 AT 5:59 A.M. MEAN....53 NORMAL.....41 DEPARTURE FROM 30-YEAR NORMAL.....+12 TOTAL DEPARTURE FOR THE MONTH.....+21 (+0.5 DEGREES/DAY) HEATING DEGREE DAYS HEATING DEGREE DAY UNITS FOR YESTERDAY.....12 DEPARTURE....-12 TOTAL HEATING UNITS FOR THE MONTH.........845 DEPARTURE....-25 TOTAL HEATING UNITS FOR THE SEASON.......4939 DEPARTURE...-501 TOTAL HEATING UNITS LAST SEASON TO DATE..5440 DIFFERENCE..-501 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........23 SE AT 6:53 P.M. AEROVANE..........21 SE AT 6:45 P.M. ASOS..............23 SE AT 6:53 P.M. DAVIS.............24 ESE FASTEST MILE FOR YESTERDAY...........18 SE AT 7:09 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........18 SE AT 7:00 P.M. AVERAGE WIND SPEED AND DIRECTION...10.4 MPH NW ASOS............11.0 MPH *LAST OF SEVERAL OCCURRENCES PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.31 DEPARTURE....-4.33 ASOS..............0.33 TOTAL PRECIPITATION FOR THE YEAR...........9.72 DEPARTURE....-3.76 ASOS..............9.44 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.2 TOTAL SNOWFALL FOR THE MONTH................0.1 DEPARTURE....-10.8 TOTAL SNOWFALL FOR THE SEASON..............51.2 DEPARTURE.....-5.1 PRELIMINARY CLIMATE SUMMARY FOR MARCH 2006......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 3/1 32/14/23/-9/0/0/674/100 32 WSW 3/2 31/21/26/-6/0.01/T/054/08 35 NNW 3/3 28/16/22/-10/0/0/626/92 46 WNW Aero 52 WNW 3/4 38/16/27/-6/0/0/587/86 48 NW 3/5 44/23/34/+1/0/0/686/100 45 WNW Aero 48 WNW 3/6 39/22/31/-2/0/0/496/72 33 NW 3/7 41/21/31/-2/0/0/574/83 20 NW 3/8 45/22/34/0/0/0/672/94 24 WNW 3/9 42/32/37/+3/T/T/000/00 32 SE 3/10 64/42/53/+19/0/0/000/00 44 WSW 3/11 57/38/48/+13/0/0/583/83 43 W 3/12 54/40/47/+12/T/0/012/02 39 SSW Aero 42 SSW 3/13 54/43/49/+14/0.09/0/000/00 27 S 3/14 56/33/45/+9/0.17/0/256/36 44 W Aero 48 W 3/15 41/28/35/-1/T/T/386/55 56 WSW Max. Inc. 62 MPH 3/16 42/26/34/-2/0/0/.../.. 42 W 3/17 41/21/31/-6/0/0/.../.. 30 NW 3/18 38/17/28/-9/0/0/550/76 32 W 3/19 34/21/28/-9/T/T/298/41 35 W 3/20 34/18/26/-12/0/0/692/95 42 WNW 3/21 45/19/32/-6/0/0/629/86 33 W 3/22 40/28/34/-4/0/0/022/03 28 WNW 3/23 55/28/42/+4/0/0/354/48 28 W 3/24 47/33/40/+1/0/0/030/04 23 NE 3/25 38/33/36/-3/0.04/T/000/00 28 NE 3/26 49/34/42/+3/T/T/157/21 32 WNW 3/27 56/32/44/+4/0/0/734/98 30 WNW 3/28 54/34/44/+4/0/0/638/85 22 SSE 3/29 63/34/49/+9/0/0/732/97 25 S 3/30 65/41/53/+12/0/0/.../.. 23 SE DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 31 HIGH 89F IN 1998 LOW 16F IN 1923 PRECIP 2.89 INCHES IN 1987 SNOWFALL 15.0 INCHES IN 1997 PEAK GUST 81 MPH SSE IN 1987 RECORDS FOR APRIL 1 HIGH 74F IN 1967 LOW 6F IN 1923 PRECIP 3.47 INCHES IN 2004 SNOWFALL 15.0 INCHES IN 1997 PEAK GUST 75 MPH SSW IN 1962 TODAY'S REPORT BY: Andrew Hoell