BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 TUESDAY DECEMBER 24 2002 DISCUSSION TODAY AT 1 P.M. Very tranquil weather today at BHO. Only a few fair weather cumulus clouds and high cirrus coming from the south, which is the first sign of our Christmas Nor'easter. Today must be the calm before the storm as temperatures holding steady in the lower and mid 30's and winds are generally light for the Hill. Very nice visibility today as Monadnocks clearly coming into view this morning and afternoon. Truly, can't ask for anything better out of an early winter's day. Enjoying this weather while it lasts since things will get pretty hectic up here during the storm. TODAY'S OBSERVATIONS 12/24/2002 7 A.M. BHO SA 1155 50 OVC 40 123/30/31/2715/989/ FEW BINOVC NE-SE VIRGA E DRFTING N 8/500/ 53020 10032 20029 10 A.M. BHO SA 1455 50 SCT 250 SCT 80 152/33/15/2816/998/ MDT CU ALQDS MDT CI E-SW FEW ACSL FRMING ALNG W HRZN WND GRDLY BACKING/ 8/541/ 51029 1 P.M. BHO SA 1755 250 -OVC 80 139/36/15/2812/994/ FEW SC ALGN HRZN S-NE/ 8/507/ 55013 10037 20030 THE DATA RECORDED FOR MONDAY DECEMBER 23 TEMPERATURES ARE CALENDAR DAY MIDNIGHT TO MIDNIGHT EASTERN STANDARD TIME MAX: 42 MIN: 32 ASOS MAX: 42 ASOS MIN: 32 MEAN: 37 [ + 8 ] NORMAL HIGH/LOW/MEAN: 37/22/29 TOTAL DEPARTURE FOR DECEMBER TO DATE: - 33 DEGREES DECEMBER AVERAGES 1.4 DEGREES BELOW NORMAL PER DAY PRECIPITATION FOR 12/23 AS OF 7 A.M. 24 HRS ENDING 7 A.M.......0.00 IN TOTAL FOR ASOS............0.00 IN TOTAL FOR DECEMBER........5.17 IN (STD GAUGE) ASOS DECEMBER TOTAL.......4.97 IN DEPARTURE FROM NORMAL....+1.80 IN (STD GAUGE) TOTAL SNOWFALL 24 HRS.....0.00 IN DECEMBER SNOWFALL.........10.5 IN SEASONAL SNOWFALL........ 20.0 IN PRECIP. TOTAL YEAR 2002...51.77 IN DEPARTURE FROM NORMAL.....+1.89 IN WIND DATA FOR MONDAY DECEMBER 23 2002 PEAK GUST ASOS: 44 MPH W AT 01:51 A.M. PEAK GUST 420C: 47 MPH W AT 01:51 A.M. PEAK GUST AERO: 51 MPH W AT 01:51 A.M. DEC. 2002 PRELIMINARY DATA....ALL IS CALENDAR DAY DATA.... BELOW IS ORDER OF DATA REPORTED.... MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL /SUNSHINE/ OFFICIAL 420C WIND GUST Aero = Aerovane recording wind system gust when significant TSTM = thunderstorm day 12/1 35/21/28/-8/0/0/537/96/ 54 W Aerovane 53 MPH W 12/2 34/21/28/-8/000/00/006/01 29 SW 12/3 29/12/21/-14/0.08/1.2/547/98 44 NW Aerovane 50 MPH NW 12/4 28/11/20/-15/0/0/522/94 28 WNW 12/5 25/19/22/-13/0.28/3.7/000/00 22 NNW 12/6 28/21/25/- 9/0.11/1.7/000/00 22 NNW 12/7 37/20/29/-5/0/0/540/98 37 SSW 12/8 40/25/33/0/0/0/391/71/ 37 WNW Aerovane 41 MPH WNW 12/9 25/8/17/-16/0/0/545/99/ 35 NW Aerovane 39 MPH NW 12/10 37/17/27/-6/0/0/307/56/ 28 SW 12/11 40/25/33/+1/0.37/0/000/00 40 ENE Aerovane 41 MPH ENE lightning in cloud late evening 12/12 38/33/36/+4/0.87/T/000/00 44 NE Aerovane 46 MPH NE 12/13 44/32/38/+6/0.04/0/312/57 25 ENE 12/14 44/32/38/+7/1.94/0.2/000/00 53 ENE Aerovane 53 MPH ENE 12/15 43/34/39/+8/0/0/480/88 42 WNW Aerovane 45 MPH WNW 12/16 36/23/30/-1/0.41/3.7/000/00/ 31 N Aerovane 36 MPH N 12/17 25/17/21/-10/T/T/441/81/ 24 N 12/18 37/16/27/-3/0/0/.../../ 21 NW 12/19 42/25/34/4/0/0/.../../ 30 SW 12/20 59/37/48/18/1.07/0/.../../ 75 S ** Aerovane 79 MPH S 12/21 43/32/38/8/T/T/.../../ 40 WSW Aerovane 46 MPH WSW 12/22 48/31/40/+11/0/0/.../../ 32 SSW 12/23 42/32/37/8/0/0/.../../ 47 W ** a new record peak gust for December 20th RECORDS FOR DECEMBER 24 HIGH 58 IN 1996 LOW -6 IN 1943 PRECIP 2.21' IN 1994 SNOWFALL 12.3' IN 1961 PEAK GUST 79e MPH SE IN 1941 RECORDS FOR DECEMBER 25 HIGH 62 IN 1889 LOW -11 IN 1980 PRECIP 1.15' IN 1886 SNOWFALL 6.0' IN 1902 PEAK GUST 80 MPH NW IN 1971 RECORDS FOR DECEMBER 26 HIGH 58 IN 1973,1982 LOW -12 IN 1980 PRECIP 3.64' IN 1969 SNOWFALL 17.5' IN 1909 PEAK GUST 84 MPH SSE IN 1957 e = estimated Today's report by: Andy Hoell Happy Holidays from our observers: Robert Skilling, Matt Douglas, Mike Iacono, Andrew Hoell