BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, DECEMBER 29, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME TODAY'S DISCUSSION.... Showers today have brought only a little over 1/4 inch as of early this afternoon with temperatures reaching the low 50's. Winds have backed from SSE-SE around to ESE-E early this afternoon and speeds have been diminishing after gusts over 30 MPH early this morning. The peak gust was 39 MPH SE as registered by Aerovane just after 1 a.m. TODAY'S OBSERVATIONS.... 7 A.M. obscurement with fog and visibility 1/16 mile in heavy fog; temp./dewpoint 48; wind SSE 18 gusting 25 MPH; six hourly precip. 0.01; six hourly min. temp. 43 deg. BHO SA 1155 W2 X 1/16F 032/48/48/1516G22/962/ 8//// 55011 ASOS 60004 MANUAL 6001/ ASOS 70004 MANUAL 70001 10048 20043 10 A.M. obscurement with fog and visbility 1/16 in heavy fog; temp./dewpoint 48; wind SSE 18 gusting 25 MPH; 3-hourly rainfall 0.01 inch... 1 P.M. obscurement with heavy fog and visibility 1/16 in light but briefly heavy rain showers; temp/dewpoint 51; wind ESE 13 mph; six hourly rainfall 0.28 inch; six hourly max. temp. 51 deg... BHO SA 1755 W2 X1/16RW-F 976/51/51/1111/946/ RB UKN BRFLY RW+/ 8//// 58048 ASOS 60031 MANUAL 6028/ 10051 20048 WEATHER SUMMARY FOR WEDNESDAY, DECEMBER 28: TEMPERATURE (DEGREES F) MAX.....40 NORMAL.....36 HAZEN....40.4 @ 11:59 P.M. MIN.....25 NORMAL.....21 HAZEN....25.0 @ 5:24 A.M. MEAN....33 NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL......+ 5 TOTAL DEPARTURE FOR THE MONTH......- 64 [- 2.5 deg per day] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........32 DEPARTURE....- 5 TOTAL HEATING UNITS FOR THE MONTH........1000 DEPARTURE....+ 65 TOTAL HEATING UNITS FOR THE SEASON.......2065 DEPARTURE....-153 TOTAL HEATING UNITS LAST SEASON TO DATE..2218 DIFFERENCE...- 60 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........36 SE AT 11:07 P.M. AEROVANE..........39 SE AT 11:07 P.M. ASOS..............31 SSE AT 11:57 P.M. DAVIS.............N/A FASTEST MILE FOR YESTERDAY...........32 WNW AT 2:40 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE........32 WNW AT 2:41 A.M. MAXIMUM 1-MINUTE DAVIS AVERAGE.......N/A AVERAGE WIND SPEED AND DIRECTION...12.0 S ASOS............12.9 SSE [160 deg] DAVIS...........N/A PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01 DEPARTURE....-0.14 ASOS..............0.04 TOTAL PRECIPITATION FOR THE MONTH..........3.42 DEPARTURE....-0.69 ASOS..............3.36 TOTAL PRECIPITATION FOR THE YEAR..........65.69 DEPARTURE...+15.07 ASOS.............64.51* *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........ 0.0 DEPARTURE....- 0.4 TOTAL SNOWFALL FOR THE MONTH...............13.2 DEPARTURE....+ 3.7 TOTAL SNOWFALL FOR THE SEASON..............15.3 DEPARTURE....+ 2.9 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/-6/0/0/533/98 27 MPH WSW 12/21 28/15/22/-8/0/0/501/92 28 MPH WSW 12/22 30/18/24/-5/0/0/419/77 28 MPH SSW 12/23 43/29/36/+7/0/0/452/83 28 MPH SSW 12/24 48/35/42/+13/0/0/485/89 25 MPH WSW 12/25 49/36/43/+14/0.30/0/300/55 31 MPH E Aero 35 MPH E 12/26 54/30/42/+14/0.76/0.1/000/00 37 MPH W Aero 43 MPH WNW 12/27 38/26/32/+4/T/T/469/86 44 MPH WNW Aero 50 MPH WNW 12/28 40/25/33/+5/0/0/.../.. 36 MPH SE 12/29 morning low temp. 40 deg... 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 29 HIGH 72 IN 1984 LOW -19 IN 1933 (RECORD FOR DECEMBER) PRECIP 1.91 INS. IN 1945 SNOWFALL 18.4 INS. IN 1945 PEAK GUST 95 MPH S IN 1966 (RECORD FOR DECEMBER) RECORDS FOR DECEMBER 30 HIGH 60 IN 1984 LOW -18 IN 1933 PRECIP 1.48 INS. IN 1891 SNOWFALL 7.5 INS. IN 1956 PEAK GUST 81 MPH WNW IN 1962 TODAY'S REPORT BY: Robert Skilling