BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, DECEMBER 27, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME TODAY'S DISCUSSION.... Strong WNW winds are gusting 30 to 45 MPH today with a few gusts up to near 50 MPH early this morning. A few morning snow flurries occurred and before midnight we actually had 0.1 inch of snow. The final precipitation total for the event that began late on Christmas was 1.06 inches. TODAY'S OBSERVATIONS.... 7 A.M. overcast with high clouds and breaks in the overcast; visibility 60 miles; temp. 26; dewpoint 17; wind WNW 24 gusting to 36 MPH; six hourly min. temp. 26 deg; six hourly precip. trace; 24 hourly precip. 0.36 inch BHO SA 1155 70 SCT E120 BKN 150 BKN 250 OVC 60 001/26/17/3021G31/953/ FEW SC BINOVC DSNT S-SW-W OVC PTLY THN WND 27V33 PK WND 3035/04/ TOTAL NEW SNW PST 24 HRS 0.1 IN/ 8/578 MANUAL 6000/ ASOS 70032 MANUAL 70036 10029 20026 10 A.M. clear with 60 miles visibility and just a few clouds; temp. 30 deg; dewpoint 19 deg; wind WNW 17 gusting to 25 MPH... BHO SA 1455 CLR 60 032/30/19/2915G22/962/ FEW SC ALQDS FEW ACSL NE CI NNW-NE-ESE PK WND 2927/15/ WND 26V33/ 8/548 51031 1 P.M. clear just a few distant clouds and visibility 70 miles; temp. 36; dewpoint 21; wind WNW 22 gusting 31 MPH; six hourly max. temp. 36; six hourly min temp. 26 deg. BHO SA 1755 CLR 70 033/36/21/2919G27/963/ OCNL CUFRA FRMG FEW DSNT CU/CUFRA FEW ACSL DSNT NE-E CI LYR DSNT NNE-ESE PK WND 2927/54/ 8/141 53001 10036 20026 WEATHER SUMMARY FOR MONDAY, DECEMBER 26: TEMPERATURE (DEGREES F) MAX.....54 NORMAL.....36 HAZEN....54.4 @ 2:50 A.M. MIN.....30 NORMAL.....21 HAZEN....30.4 @ 11:58 P.M. MEAN....42 NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL......+ 14 TOTAL DEPARTURE FOR THE MONTH......- 73 [- 3.0 deg per day] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........23 DEPARTURE....- 13 TOTAL HEATING UNITS FOR THE MONTH.........935 DEPARTURE....+ 74 TOTAL HEATING UNITS FOR THE SEASON.......2000 DEPARTURE....-144 TOTAL HEATING UNITS LAST SEASON TO DATE..2144 DIFFERENCE...- 26 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........37 W AT 11:07 P.M. ** AEROVANE..........43 WNW AT 10:44 P.M. ASOS..............37 WNW AT 10:44 P.M. DAVIS.............34 S AT 2:11 A.M. FASTEST MILE FOR YESTERDAY...........26 W AT 11:51 P.M. ** MAXIMUM 2-MINUTE ASOS AVERAGE........26 W AT 11:04 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE.......26 W AT 10:42 P.M. ** last of several occurrences.... AVERAGE WIND SPEED AND DIRECTION...11.2 NW ASOS............11.1 WNW [300 deg] DAVIS...........11.1 W [280 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.36 DEPARTURE....+0.21 ASOS..............0.32 TOTAL PRECIPITATION FOR THE MONTH..........3.41 DEPARTURE....-0.40 ASOS..............3.32 TOTAL PRECIPITATION FOR THE YEAR..........65.68 DEPARTURE...+15.36 ASOS.............64.47* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M........ 0.1 DEPARTURE....- 0.3 TOTAL SNOWFALL FOR THE MONTH...............13.2 DEPARTURE....+ 4.3 TOTAL SNOWFALL FOR THE SEASON..............15.3 DEPARTURE....+ 3.5 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2005......CALENDAR DAY DATA DATA REPORTED IN THE FOLLOWING ORDER: 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 43/35/39/+3/0/0/212/38 29 MPH N 12/2 41/31/36/0/0/0/217/39 46 MPH WSW Aero 51 MPH WSW 12/3 33/26/30/-5/0/0/534/96 46 MPH W Aero 50 MPH W 12/4 28/22/25/-10/0.24/2.2/000/00 22 MPH W 12/5 32/21/27/-8/0/0/061/11 23 MPH WSW 12/6 33/23/28/-6/T/0.1/160/29 31 MPH W Aero 36 MPH W 12/7 28/16/22/-12/T/T/479/87 44 MPH WNW Aero 50 MPH WNW 12/8 31/14/23/-10/0/0/545/99 25 MPH NW 12/9 32/22/27/-6/1.23/10.8/000/00 53 MPH NW Aero 63 MPH NW TSTM/SLEET/GLAZE 12/10 34/21/28/-5/0/0/367/67 30 MPH S 12/11 40/27/34/+2/0/0/493/90 27 MPH SSW 12/12 38/21/30/-2/0/0/241/44 25 MPH W 12/13 21/09/15/-17/T/T/361/66 32 MPH WNW Aero 35 MPH WNW 12/14 23/04/14/-17/0/0/513/94 24 MPH NW 12/15 32/07/20/-11/0/0/464/85 21 MPH E 12/16 48/27/38/+7/0.88/T/000/00 55 MPH ESE Aero 61 MPH ESE/SLEET/GLAZE 12/17 37/26/32/+1/0/0/469 86 25 MPH W 12/18 33/23/28/-2/0/0/213/39 21 MPH W 12/19 31/21/26/-4/T/T/164/30 32 MPH WSW Aero 35 MPH WSW 12/20 31/17/24/-6/0/0/.../.. 27 MPH WSW 12/21 28/15/22/-8/0/0/.../.. 28 MPH WSW 12/22 30/18/24/-5/0/0/.../.. 28 MPH SSW 12/23 43/29/36/+7/0/0/.../.. 28 MPH SSW 12/24 48/35/42/+13/0/0/.../.. 25 MPH WSW 12/25 49/36/43/+14/0.25/0/.../.. 31 MPH E Aero 35 MPH E 12/26 54/30/42/+14/0.81/0.1/000/00 37 MPH W Aero 43 MPH WNW 12/27 morning low temp. 26 deg; precip. trace, snowfall trace; early morning peak gust 48 MPH WNW Aerovane wind system DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): A NEW DAILY EXTREME HAS BEEN SET FOR DECEMBER 2005 12/9 - A NEW MAXIMUM DAILY SNOWFALL OF 10.8 INCHES; the previous record was 6.0 inches in 2001 RECORDS FOR DECEMBER 27 HIGH 57 IN 1895,1949 LOW -04 IN 1903 PRECIP 2.43 INS. IN 1969 SNOWFALL 11.2 INS. IN 1947 PEAK GUST 53e W IN 1957,1978; WNW 1976 RECORDS FOR DECEMBER 28 HIGH 60 IN 1982 LOW -02 IN 1933 PRECIP 2.16 INS. IN 1967 SNOWFALL 9.5 INS. IN 1967 PEAK GUST 89 MPH SSE IN 1983 TODAY'S REPORT BY: Robert Skilling