BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MARCH 4, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Clear Temperature: 29F, Dew point: 20F, Wind: WSW at 15 kt Sea-level pressure: 29.61 inches Hg, rising Visibility: 45 miles Snow depth: Trace BHO SA 1155 CLR 45 029/29/20/2515/961/ 8/000 51014 10034 20029 WEATHER SUMMARY FOR SATURDAY, MARCH 3 TEMPERATURE (DEGREES F) MAX.....58 NORMAL.....41 MIN.....33 NORMAL.....24 MEAN....46 NORMAL.....32 DEPARTURE FROM 30-YEAR NORMAL.........+14 TOTAL DEPARTURE FOR THE MONTH.........+20 (+6.5 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........19 DEPARTURE.......-14 TOTAL HEATING UNITS FOR THE MONTH..........79 DEPARTURE.......-21 TOTAL HEATING UNITS FOR THE SEASON.......4170 DEPARTURE......-500 TOTAL HEATING UNITS LAST SEASON TO DATE..4256 DIFFERENCE......-86 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............44 WNW AT 5:10 P.M. AEROVANE.............43 WNW AT 5:10 P.M. ASOS.................40 WNW AT 5:20 P.M. DAVIS................43 WNW FASTEST MILE FOR YESTERDAY..............35 WNW AT 5:13 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........33 WNW AT 5:14 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE..........34 WNW AVERAGE WIND SPEED AND DIRECTION......13.2 SSW ASOS..............13.5 DAVIS.............13.0 SSW [200 deg] 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..........1.74 DEPARTURE....+1.14 ASOS..............1.75 TOTAL PRECIPITATION FOR THE YEAR...........7.46 DEPARTURE....-1.98 ASOS..............7.38 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE......-0.5 TOTAL SNOWFALL FOR THE MONTH................0.4 DEPARTURE......-1.1 TOTAL SNOWFALL FOR THE SEASON..............14.3 DEPARTURE.....-32.6 PRELIMINARY CLIMATE SUMMARY FOR MARCH 2007......CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 3/1 40/22/31/-1/0/0/.../.. 24 NW Aero 23 MPH NW 3/2 49/28/39/+7/1.74/0.4/0/0 48 E Aero 45 MPH E 3/3 58/33/46/+14/0/0/.../.. 44 WNW Aero 43 MPH WNW DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 4 HIGH 69 IN 1974 LOW -5 IN 1950 [RECORD LOW FOR MONTH] PRECIP 1.80 INCHES IN 1960 SNOWFALL 17.3 INCHES IN 1960 PEAK GUST 81e MPH SSW IN 1971 RECORDS FOR MARCH 5 HIGH 64 IN 1979 LOW -2 IN 1948 PRECIP 1.76 INCHES IN 2001 SNOWFALL 13.0 INCHES IN 1891 PEAK GUST 76e MPH WNW IN 1971 TODAY'S REPORT By: Andrew Hoell