BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA TUESDAY DECEMBER 18 2001 PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ DAILY DISCUSSION.....12/18/2001...@ 1 P.M. 1 INCH OF LIQUID PRECIPITATION FOR 24 HOURS ENDING 7 A.M... 1.4 INCHES OF SNOW AND SLEET YESTERDAY... Finally.. a significant precipitation event here on the summit. For the 24 hours ending at 7 A.M. 1.00 inch of liquid precipitation was measured in the standard 8-inch rain gauge. ASOS only totaled 0.86 IN due to lack of proper melting of snow/sleet yesterday. The snow and sleet yesterday totaled 1.4 inches, bringing the monthly and seasonal total up to 9.9 INS. It's interesting to note that 1.4 inches of snow/sleet was also measured at a nearby sea-level station in Milton. TODAY'S OBSERVATIONS.... 7 A.M. BHO SA 1155 W1 X 0R-F 909/34/34/3412/926/ TOTAL NEW SNW PST 24HRS 1.4 INS/ 8///// 56020 70100 10038 20033 DATA RECORDED FOR MONDAY DECEMBER 17.. TEMPERATURES.... MAX : 40 MIN: 26 // ASOS MAX: 41 ASOS MIN: 27 NORMAL HIGH AND LOW: 37/22 MEAN 33 [+ 4] TOTAL DEP FOR MONTH TO DATE: + 182 degrees DECEMBER is averaging 10.7 degrees WARMER THAN NORMAL.... PRECIPITATION....ON 12/18 AS OF 7 A.M. 24 HRS ENDING 7 A.M. ... 1.00 IN. ASOS......................0.86 IN. DEC. TOTAL................2.57 IN. (STD GAGE) DEP. FROM NORMAL........- 0.11 IN. Dec. snowfall: 9.9 IN. PRECIP. TOTAL YEAR 2001 TO DATE: 44.54 {- 2.12 IN. ] WIND DATA....FOR 12/17 PEAK GUST ASOS: 22 MPH SE AT 6:31 P.M. PEAK GUST 420C: 28 MPH SE AT 6:31 P.M. PEAK GUST AERO: 26 MPH SE AT 6:31 P.M. DAILY DEC. 2001 DATA....AT BLUE HILL... max/min/mean/dep/precip/snowfall/sun mins/%/pk gust/TSTM = thunderstorm day Aero = the aerovane wind system ) 12/1 70/45/58/+23/0/0/536/96/ 36 WSW (Aero 36 MPH SW ) 12/2 49/38/44/+9/0/0/006/01/ 21 WNW 12/3 52/35/44/+10/0/0/556/100/ 31 MPH SSW (Aero 33 MPH SSW ) 12/4 56/41/49/+15/T/0/516/93/ 24 SW 12/5 65/46/56/+22/0.01/0/393/71/ 24 SSW 12/6 70/52/61/+28/0/0/221/40/ 40 SW (Aero 42 MPH SW ) 12/7 55/39/47+14/0/0/490/89/ 22 ENE 12/8 40/30/35/+3/0.23/2.5/204/37/ 20 NNW 12/9 32/27/30/-2/0.62/6.0/011/02/ 22 ENE 12/10 40/27/34/+2/0/0/.../../ 20 S 12/11 45/36/41/+10/0/0/.../../ 18 NNE (Aero 20 mph NNE ) 12/12 40/34/37/+6/0/0/.../../ 28 NE 12/13 49/37/43/+12/0.05/0/000/00/ 23 SW 12/14 54/44/49/+19/..../0/.../../ 29 NNW 12/15 44/27/36/+6/..../T/.../../ 31 NW (Aero 36 MPH NW) 12/16 37/24/31/+1/0/0/.../../ 32 NW 12/17 40/26/33/+4/.../1.4/.../../ 28 SE 12/18 Morning low 33 degrees RECORDS FOR DECEMBER 18 HIGH 59 IN 1928 LOW -11 IN 1919 PRECIP 1.44 INS 1915 SNOWFALL: 7.0 INS. 1904 PEAK GUST 76e MPH W IN 1978 RECORDS FOR DECEMBER 19 HIGH 59 IN 1899 LOW -01 IN 1919 PRECIP 2.06 INS 1986 SNOWFALL: 14.1 INS. 1945 PEAK GUST 68 MPH NE IN 1986 e = estimated MFD