BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, NOVEMBER 25, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Thin scattered cirrus Temperature: 29F, Dew point: 17F, Wind: SSW at 12 kt Sea-level pressure: 30.31 inches Hg, rising Visibility: 45 miles 6-hour min temp: 28F BHO SA 1155 250 -SCT 45 265/29/14/2112/031/ 8/001 53001 10029 20028 10 A.M. Weather: Clear Temperature: 37F, Dew point: 17F, Wind: WSW at 10 kt Sea-level pressure: 30.33 inches Hg, rising Visibility: 35 miles BHO SA 1455 CLR 35 270/37/17/2310/033/ HAZY/ 8/001 53005 WEATHER SUMMARY FOR SATURDAY, NOVEMBER 24 TEMPERATURE (DEGREES F) MAX.....32 NORMAL.....46 MIN.....16 NORMAL.....32 MEAN....24 NORMAL.....39 DEPARTURE FROM 30-YEAR NORMAL..........-15 TOTAL DEPARTURE FOR THE MONTH..........-60 [-2.3 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............41 DEPARTURE......+15 TOTAL HEATING UNITS FOR THE MONTH...........592 DEPARTURE......+59 TOTAL HEATING UNITS FOR THE SEASON..........939 DEPARTURE.....-186 TOTAL HEATING UNITS LAST SEASON TO DATE.....952 DIFFERENCE.....-14 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............29 W AT 12:25 A.M. AEROVANE.............28 W AT 12:24 A.M. ASOS.................26 WNW AT 12:32 A.M. DAVIS................27 WNW AT 12:31 A.M. FASTEST MILE FOR YESTERDAY..............20 W AT 12:50 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........21 WNW AT 12:27 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........23 W AT 12:27 A.M. AVERAGE WIND SPEED AND DIRECTION.......9.5 W ASOS................9.2 DAVIS..............10.3 W [260 deg] * Last of several occurrences 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..........3.03 DEPARTURE....-0.71 ASOS..............3.04 TOTAL PRECIPITATION FOR THE YEAR..........38.57 DEPARTURE....-7.19 ASOS.............37.87 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.8 DEPARTURE.....-1.3 TOTAL SNOWFALL FOR THE SEASON...............0.8 DEPARTURE.....-1.5 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2007...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 * entries for daily snowfall beginning 19th 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/-4/0/551/91 30 W 11/8 43/28/36/-8/0/494/82 22 W 11/9 44/32/38/-6/0.09/331/55 21 NNE 11/10 39/28/34/-10/0.05/383/64 32 N 11/11 42/24/33/-10/0/590/99 23 WNW 11/12 42/27/35/-8/0.02/024/04 25 SSE 11/13 55/42/49/+6/0.33/308/52 28 S 11/14 58/41/50/+8/0/507/86 37 S 11/15 64/40/52/+10/0.41/035/06 44 SSE Aero 46 MPH SSE 11/16 44/30/37/-5/0.31/158/27 51 W Aero 54 MPH W 11/17 40/28/34/-7/0/350/60 37 W 11/18 41/29/35/-6/0/495/85 25 ENE 11/19 36/30/33/-8/0.01/0.1/030/05 29 N ** sunshine data corrected 11/20 37/29/33/-7/0.09/0.7/000/00 22 SE 11/21 48/32/40/0/0.01/0/000/00 21 N 11/22 64/40/52/+12/0.01/0/212/37 36 W 11/23 40/23/32/-7/0/.../.. 36 W 11/24 32/16/24/-15/0/.../.. 26 WNW 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 25 HIGH 71 IN 1979 LOW 13 IN 1938 PRECIP 3.10 INCHES IN 1983 SNOWFALL 8.0 INS IN 1888 PEAK GUST 94e E IN 1950 RECORDS FOR NOVEMBER 26 HIGH 66 IN 1979 LOW 6 IN 1938 PRECIP 2.22 INCHES IN 1888 SNOWFALL 3.0 INCHES IN 1974 PEAK GUST 78 SSE IN 1964 TODAY'S REPORT PREPARED By: Andrew Hoell