BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA MONDAY JANUARY 21 2002 PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ DAILY DISCUSSION.....1/21/2001 @ 1 P.M. WEEK-END SNOWSTORM BROUGHT ALMOST 5 INCHES TO THE SUMMIT AND 4.5 TO 5.3 INCHES THROUGHOUT MOST OF THE LOCAL AREA.... SNOW CHANGES TO RAIN LATE THIS MORNING AFTER 0.1 SNOWFALL... The week-end snowfall event brought 4.8 inches with 0.31 inch melted (standard gage) and a total of 0.26 for the ASOS gage. Maximum snow depth on the ground reached 8 inches on Sunday morning. Snow and sleet accumulated a scant 0.1 inch this morning before precipitation changed to all rain by 1 p.m. with 33 degrees by 1 p.m. TWO DAYS OF OBSERVATIONS....SUNDAY AND MONDAY..... 1/20/2002 SUN 7 A.M. BHO SA 1155 -X 1F 137/19/19/3109/993/ F1 STRA DRFTG OVR SMT FOG DEPOSITING THN RIME ICE VSBY SE 2 NW 4 PRESRR THN RIME ALL SFCS TOTAL NEW SNW PST 24 HRS 4.8 INS/ 4/008 53030 6002/ 70031 10026 20019 10 A.M. BHO SA 1455 CLR 15 166/24/20/3007/002/ VSBY WNW 20 HAZY ALQDS/ 51029 1/21/2002 MON 7 A.M. BHO SA 1155 150 SCT E180 BKN 220 OVC 15 197/27/21/2013/011/ OVC PTLY THN AND BINOVC HIER CLDS VSB NE-S HAZY/ 8/071/ 4/006 55002 10029 20025 10 A.M. BHO SA 1455 E20 BKN 140 OVC 12 169/30/25/1508/002/ VSBY WNW 20 ABV INVSN HAZY ALQDS AND INCRSNG WND GRDLY BACKING/ 8/52// 58028 1 P.M. BHO SA 1755 BHO SA 1755 -X E12 OVC 3/4VR-F 108/33/33/1514/985/ F5 STRA DRFTG OVR SMT VSBY 1/2V1 VSBY S-W 2 CDNS VRBL ZRSE UKN PRESFR TOTAL NEW SNW PST 6 HRS 0.1 IN/ 8/02// 58061 6006/ 10033 20027 DATA RECORDED FOR SUNDAY JANUARY 20..... TEMPERATURES.... MAX : 35 MIN: 19 // ASOS MAX: 34 ASOS MIN: 19 NORMAL HIGH AND LOW: 33/18 MEAN 27 [+ 2] TOTAL DEP FOR MONTH TO DATE: + 103 JANUARY IS AVERAGING 5.0 DEGREES WARMER THAN NORMAL DAILY.... PRECIPITATION....ON 01/21 AS OF 7 A.M. 24 HRS ENDING 7 A.M. . .0.00 IN. ASOS......................0.00 IN. JAN. TOTAL................2.75 IN. (std. gage) DEP FROM NORMAL..........-0.37 IN. PRECIP. TOTAL YEAR 2002: 2.75 IN. SNOWFALL.... ON 01/21 AS OF 7 A.M. 24 HRS ENDING 7 A.M.... 0.0 INS. JAN. TOTAL...............14.4 INS. SEASONAL TOTAL TO DATE. 24.5 INS. WIND DATA....FOR 01/20... PEAK GUST ASOS: 21 MPH W AT 3:28 P.M. PEAK GUST 420C: 23 MPH W AT 3:28 P.M. ** PEAK GUST AERO: 24 MPH W AT 3:28 P.M. ** last of several occurrences... JANUARY 2002 PRELIMINARY DATA.... MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUNSHINE/ WIND GUST 1/01 32/17/25/-2/0/0/533/97/ 38 W 1/02 36/18/27/0/0/0/545/99/ 31 W 1/03 36/22/29/+2/0/0/435/79/ 30 W 1/04 33/20/27/0/0/0/513/93/ 29 NNW 1/05 39/27/33/+6/0/0/260/47/ 25 W 1/06 46/29/38/+12/0.50/0/022/04/ 45 NE 1/07 39/26/33/+7/0.44/1.5/000/00/ 43 NE 1/08 32/17/25/-1/0.03/0.5/534/96/ 25 SW 1/09 37/25/31/+5/T/T/000/00/ 32 SW 1/10 47/35/41/+15/0/0/240/43/ 37 W 1/11 41/33/37/+11/0.18/T/000/00/ 35 W 1/12 40/31/36/+10/T/T/090/16/ 32 WNW 1/13 38/30/34/+8/1.02/6.0/090/16/ 68 MPH W (Aero 68 MPH W ) 1/14 36/26/31/+5/0/0/.../../ 51 W (Aero 51 MPH W ) 1/15 36/30/33/+7/0.21/0.3/000/00/ 29 E (ASOS 30 MPH E ) 1/16 36/29/33/+7/0/0/.../../ 35 WNW 1/17 38/28/33/+7/0.06/1.3/.../../ 31 WNW 1/18 33/24/29/+3/T/T/.../../ 32 WNW 1/19 27/20/24/-1/0.25/4.0/000/00/ 22 W 1/2O 35/19/27/+2/0.06/0.8/.../../ 23 W 1/21 morning lo temp. 25 RECORDS FOR JANUARY 21 HIGH 65 IN 1906 LOW - 4 IN 1888.1893 PRECIP 2.49 INS 1979 SNOWFALL: 7.5 INS. 2001 PEAK GUST 78e MPH SE IN 1979 RECORDS FOR JANUARY 22 HIGH 59 IN 1916 LOW -08 IN 1888,1976 PRECIP 1.24 INS 1891,1987 SNOWFALL: 7.0 INS. 1986 PEAK GUST 67 MPH W IN 1976 e = estimated Robert Skilling