BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, NOVEMBER 11, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Clear Temperature: 24F, Dew point: 16F, Wind: WNW at 11 kt Sea-level pressure: 30.22 inches Hg, rising Visibility: 50 miles 6-hour min temp: 24F BHO SA 1155 CLR 50 234/24/16/2911/022/ FEW SC NE/ 8/400 53015 10027 20024 10 A.M. Weather: Clear Temperature: 33F, Dew point: 17F, Wind: WNW at 12 kt Sea-level pressure: 30.24 inches Hg, rising Visibility: 60 miles BHO SA 1455 CLR 60 241/33/17/3012/024/ FEW SC NE-E/ 8/400 51007 WEATHER SUMMARY FOR SATURDAY, NOVEMBER 10 TEMPERATURE (DEGREES F) MAX.....39 NORMAL.....51 MIN.....28 NORMAL.....36 MEAN....34 NORMAL.....44 DEPARTURE FROM 30-YEAR NORMAL..........-10 TOTAL DEPARTURE FOR THE MONTH..........-23 [-2.1 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............31 DEPARTURE......+10 TOTAL HEATING UNITS FOR THE MONTH...........221 DEPARTURE......+22 TOTAL HEATING UNITS FOR THE SEASON..........567 DEPARTURE.....-222 TOTAL HEATING UNITS LAST SEASON TO DATE.....721 DIFFERENCE....-154 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............32 N AT 10:28 A.M. AEROVANE.............31 N AT 10:21 A.M. ASOS.................30 NNE AT 10:28 A.M. DAVIS................30 NE AT 10:27 A.M. FASTEST MILE FOR YESTERDAY..............24 N AT 10:27 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........20 NNE AT 10:28 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........21 N AT 10:28 A.M. AVERAGE WIND SPEED AND DIRECTION......12.0 N ASOS...............11.5 DAVIS..............12.3 NNW [343 deg] * LAST OF SEVERAL OCCURANCES 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..........1.84 DEPARTURE....+0.32 ASOS..............1.84 TOTAL PRECIPITATION FOR THE YEAR..........37.38 DEPARTURE....-6.16 ASOS.............36.67 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE.....-0.7 TOTAL SNOWFALL FOR THE SEASON...............0.0 DEPARTURE.....-0.9 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2007...CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 11/1 66/42/54/+7/0/050/08 37 S 11/2 50/37/44/-2/0/446/73 29 NE 11/3 46/40/43/-3/0.95/000/00 51 N Aero 50 MPH NNW 11/4 54/37/46/0/0/503/82 33 W Aero 33 MPH W 11/5 56/40/48/+3/0/483/79 29 SE 11/6 53/37/45/0/0.75/000/00 35 SSE Aero 35 MPH SSE 11/7 50/32/41/-4/0/.../.. 30 W 11/8 43/28/36/-8/0/.../.. 22 W 11/9 44/32/38/-6/.../.../.. 21 NNE 11/10 39/28/34/-10/.../.../.. 32 N NEW DAILY RECORDS FOR NOVEMBER 2007: NONE DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 11 HIGH 68 IN 1984 LOW 17 IN 1956 PRECIP 1.14 INCHES IN 1991 SNOWFALL 2.5 IN 1986 PEAK GUST 64 NW IN 1962 RECORDS FOR NOVEMBER 12 HIGH 74 IN 1909 LOW 18 IN 1926 PRECIP 3.25 INCHES IN 1947 SNOWFALL 8.1 INCHES IN 1987 PEAK GUST 79e MPH NW IN 1947 TODAY'S REPORT PREPARED By: Andrew Hoell