BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, DECEMBER 07, 2004 It's been estimated that last evening's snowfall amounted to 0.2 inch here and was 0.01 melted. Light freezing drizzle and rain began before midnight and changed to plain light rain and mostly drizzle in the very early morning hours as temperatures rose into the middle 30's. Our precipitation total for this event had reached 0.30 inch as of 1 p.m. TODAY'S OBSERVATIONS 12/7/2004 TUE 7 a.m. low overcast with 1.5 miles visibility in light drizzle and fog; temp. and dewpoint 35; wind ene at 20 gusting 30 mph; six hourly min. temp. 32 degrees; 24 hourly precipitation 0.14 inch. BHO SA 1155 E4 OVC 11/2VL-F 252/35/35/0617G26/027/ CIG RGD STRA OCNL DRFTG OVR SMT VSBY 1V2 PK WND 0627/38/ ESTMTD NEW SNW PST 24 HRS 0.2 IN/ 8/7// 58004 ASOS 60010 MANUAL 6010/ ASOS 70013 MANUAL 70014 10035 20032 10 a.m. low overcast with 0.5 mile visibility in light drizzle and fog; temp. and dewpoint 37 deg; wind ene at 17 gusting 27 mph; three hourly precipitation 0.06 inch... BHO SA 1455 E3 OVC 1/2VL-F 247/37/37/0615G23/026/ CIG RGD STRA DRFTG OVR SMT VSBY 1/4V1/ 8/7// 58005 ASOS 60006 MANUAL 6006/ 1 p.m. low overcast with 1 mile visibility in light rain, light drizzle and fog; temp and dewpoint 39; wind ene at 20 gusting 32 mph; six hourly max. temp. 39 deg; six hourly precipitation 0.16 inch BHO SA 1755 E4 OVC 1VR-L-F 212/39/39/0617G28/016/ CIG RGD STRA OCNL DRFTG OVR SMT VSBY 3/4V11/2 PK WND 0628/48/ 8/72/ 58035 ASOS 60016 MANUAL 6016/ 10039 20035 WEATHER SUMMARY FOR MONDAY DECEMBER 06: TEMPERATURE (DEGREES F) MAX.....33 NORMAL.....41 MIN.....20 NORMAL.....27 MEAN....27 NORMAL.....34 DEPARTURE FROM 30-YEAR NORMAL.....- 7 TOTAL DEPARTURE FOR THE MONTH.....+ 13 (2.0 degrees/day) PEAK WIND GUST FOR YESTERDAY........22 NE AT 4:09 P.M. AEROVANE.........23 NE AT 4:09 P.M. ASOS.............21 NE AT 11:01 A.M. DAVIS............19 NE AT 4:21 P.M. FASTEST MILE FOR YESTERDAY..........13 NE AT 11:05 P.M. HIGHEST ASOS 2 MIN AV..............14 NE AT 9:28 P.M. HIGHEST ONE MIN. WIND FOR DAVIS ....15 NE AT 4:22 P.M. AVERAGE WIND SPEED AND DIRECTION.. 7.3 NE AVERAGE WIND SPEED FOR ASOS.......... 7.9 N 350 deg. AVERAGE WIND FOR THE DAVIS SYSTEM.... 7.3 NNE 20 deg. PRECIPITATION (INCHES) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.14 DEPARTURE....-0.01 ASOS..............0.13 TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.2 TOTAL SNOWFALL THIS MONTH TO DATE...........0.2 TOTAL PRECIPITATION FOR THE MONTH..........0.94 DEPARTURE....+0.04 ASOS..............0.95 TOTAL PRECIPITATION FOR THE YEAR..........49.92 DEPARTURE....+2.36 ASOS.............48.14 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2004......CALENDAR DAY DATA DATA REPORTED: 24 HOUR PERIODS ENDING MIDNIGHT EST DATE MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST ... SUNSHINE DATA NOT YET AVAILABLE 12/1 55/39/47/+11/0.80/0/073/13 62 MPH SE Aero 12/2 46/36/41/+5/0/0/379/68 50 MPH W Aero 51 MPH W 12/3 45/32/39/+4/0/0/.../.. 33 MPH W 12/4 39/25/32/-3/0/0/.../.. 31 MPH SSW 12/5 50/26/38/+3/0/0/.../.. 46 MPH W Aero 51 MPH W 12/6 33/20/27/-7/0.03/0.2/000/00 22 MPH NE 12/7 morning low temp. 32 deg. rainfall thru 1 p.m. 0.27 inch OUR DAILY EXTREMES.... Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR DECEMBER 07 HIGH 74 IN 1998 LOW 06 IN 1906 PRECIP 1.67 INS. IN 1953 SNOWFALL 4.0 INS. IN 1886 PEAK GUST 76e SE IN 1976 RECORDS FOR DECEMBER 08 HIGH 62 IN 1966 LOW -04 IN 1906 PRECIP 1.54 INS. IN 1969 SNOWFALL 2.5 INS. IN 2001 PEAK GUST 78e W IN 1979 Today's report by: Robert Skilling