BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JANUARY 1, 2008, NEW YEARS DAY ALL TIMES ARE IN EASTERN STANDARD TIME HAPPY NEW YEAR 2008! DECEMBER 2007 STATS Mean temp: 29.7 [-1.5] HDD = 1087 [+47] Precip: 6.94 ins. [+2.38] Snowfall: 29.7 [+19.0] Sunshine: 5962 mins. or 99.4 hrs. (corr.) or 35% Av. corr. wind speed: 13.1 mph Prevailing direction: W 21% (additional data available next day or two) Our monthly snowfall total was 29.7 inches making this December tied with December 2003 for 4th snowiest December on record. Snowiest Decembers (inches) 1) 45.2 in 1945 2) 39.5 in 1947 3) 32.0 in 1902 4) 29.7 in 2003,2007 5) 29.0 in 1886 Number of days with measurable precipitation for December was 19. This same number of days tied the record at Boston and was recorded in the early 1970's. We'll be checking it out for here. Today's observations: 7 A.M. Weather: Scattered dense high cirrus clouds Temperature: 30F, Dew point: 22F, Wind: ESE at 07 kts Sea-level pressure: 30.13 inches Hg, rising Visibility: 20 miles, patcy thin fog below inversion 6-hour min temp: 28F 24-hour precip: 0.03 inch 24-hour snowfall: 0.2 inch Snow on ground: 1 inch BHO SA 1155 200 SCT 20 203/30/22/1207/013/ PTCHS THN F BLO SMT/INVSN FEW AC DENS CI W-N MSTLY CLR SKY ENE-S-SW TOTAL NEW SNW PST 24 HRS 0.2 IN/ 8/042 4/001 56015 MANUAL 70003 ASOS 70003 10031 20028 10 A.M. Weather: Broken middle level altocumulus clouds, high overcast dense cirrus with thin spots and breaks to the SE-S Temperature: 34F, Dew point: 26F, Wind: E at 15G24 kts Sea-level pressure: 30.01 inches Hg, falling Visibility: 30 miles, light haze BHO SA 1455 E90 BKN 150 BKN 200 BKN 220 OVC 30 162/34/26/1015G24/001/ THN SPTS IOVC OVHD BINOVC SE-S DENS CI ALQDS LGT HZ/ 8/072 58041 1 P.M. Weather: Obscurement, snow & fog, moderate snow falling, snow briefly heavy past hour, snow increased one inch past hour, snow wet Temperature: 32F, Dew point: 32F, Wind: E at 13 kts Sea-level pressure: 29.82 inches Hg, falling rapidly Visibility: 1/16 moderate snow and heavy fog 6-hourly max. temp. 35F 6-hourly precip: (ASOS) 0.08 in. 6-hourly snowfall: 1.1 ins. BHO SA 1755 W2 X 1/16SF 097/32/32/0913/982/ PRESFR S OCNL S+ SNOINC1 SNW WET TOTAL NEW SNW PST 6 HRS 1.1 INS/ 8//// 58065 ASOS 60008 MANUAL 6 GRP DLYD 10035 20030 WEATHER SUMMARY FOR MONDAY, DECEMBER 31 TEMPERATURE (DEGREES F) MAX.....37 NORMAL.....35 MIN.....29 NORMAL.....20 MEAN....33 NORMAL.....27 DEPARTURE FROM 30-YEAR NORMAL...........+6 TOTAL DEPARTURE FOR THE MONTH..........-39 [-1.5 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............32 DEPARTURE...... -5 TOTAL HEATING UNITS FOR THE MONTH..........1087 DEPARTURE......+47 TOTAL HEATING UNITS FOR THE SEASON.........2167 DEPARTURE.....-162 TOTAL HEATING UNITS LAST SEASON TO DATE....1873 DIFFERENCE....+294 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............46 WSW AT 2:17 P.M. AEROVANE.............45 WSW AT 2:17 P.M. ASOS.................44 WSW AT 2:17 P.M. DAVIS................43 W AT 2:19 P.M. FASTEST MILE FOR YESTERDAY..............32 WSW AT 2:18 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........32 WSW AT 2:18 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........34 W AT 3:19 P.M. AVERAGE WIND SPEED AND DIRECTION...... 14.6 W ASOS............... 13.7 DAVIS.............. 14.1 W [280 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03 DEPARTURE....-0.12 ASOS..............0.03 TOTAL PRECIPITATION FOR THE MONTH..........6.94 DEPARTURE....+2.38 ASOS..............6.98 TOTAL PRECIPITATION FOR THE YEAR..........45.78 DEPARTURE....-5.44 ASOS.............45.20 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.2 DEPARTURE.....-0.2 TOTAL SNOWFALL FOR THE MONTH...............29.7 DEPARTURE....+19.0 TOTAL SNOWFALL FOR THE SEASON..............30.5 DEPARTURE....+16.9 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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 12/1 33/15/24/-12/0/0/493/88 54 WNW Aero 57 MPH WNW 12/2 24/15/20/-16/0.03/0.3/000/00 28 WNW 12/3 38/23/31/-4/0.62/1.7/000/00 47 W 12/4 27/17/22/-13/T/T/111/20 48 W 12/5 29/17/23/-12/T/T/244/44 23 WNW 12/6 28/15/22/-12/0/0/554/100 31 WNW 12/7 34/21/28/-6/0.07/0.7/000/00 24 SSW 12/8 41/25/33/0/0/0/452/82 32 W 12/9 33/25/29/-4/0.08/T/000/00 16 NW 12/10 30/26/28/-5/0.10/0/000/00 18 N 12/11 36/22/29/-3/0.09/0/258/47 25 S 12/12 44/22/36/+4/T/0/88/16 39 W 12/13 29/20/25/-7/1.08/9.2/000/00 24 ENE 12/14 37/20/29/-2/0.02/0.2/038/07 28 WSW 12/15 28/15/22/-9/0/0/420/77 31 WNW 12/16 43/23/33/+2/1.62/8.5/000/00 54 NE 12/17 32/15/24/-7/0/0/545/100 62 W Aero 65 MPH W 12/18 31/10/21/-9/0/0/512/94 20 W 12/19 38/24/31/+1/0.04/0/016/03 19 E 12/20 33/26/30/0/0.90/7.4/000/00 24 NNW 12/21 28/22/25/-5/0.03/0.2/000/00 25 N 12/22 32/26/29/0/0/0/136/25 21 ESE 12/23 54/33/44/+15/0.64/0/000/00 65 SE Aero 70 MPH SE 12/24 53/32/43/+14/0.01/0/501/92 50 S Aero 51 MPH S 12/25 40/29/35/+6/0/0/376/69 32 WSW 12/26 37/26/32/+4/0.22/0/332/61 27 NNE 12/27 36/31/34/+6/0.58/T/000/00 37 NNE 12/28 44/31/38/+10/0/0/410/75 28 WSW 12/29 45/34/40/+12/0.13/0/087/16 32 SE 12/30 40/30/35/+7/../0.7/175/32 25 W 12/31 37/29/33/+6/../0.8/214/39 46 WSW 1/1 morning low temp. 28F; normal low is now 19F 1.1 inches of new snow through 1 p.m. NEW DAILY RECORDS FOR DECEMBER 2007: Dec 13: Record daily snowfall of 9.2 inches surpasses previous record of 9.0 inches in 1902. Dec.16: Record daily snowfall of 8.5 inches surpasses previous record of 7.0 inches in 1896. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JANUARY 1 HIGH 58F IN 1966 LOW -6F IN 1918 PRECIP 1.45 INS. IN 1982 SNOWFALL 7.2 INS. IN 1938 PEAK GUST 90e MPH S IN 1945 RECORDS FOR JANUARY 2 HIGH 62F IN 1890 LOW -7F IN 1899,1918 PRECIP 2.10 INS. IN 1987 SNOWFALL 9.0 INS. IN 1904 PEAK GUST 85e MPH S IN 1942 TODAY'S REPORT PREPARED By: Robert Skilling