From: Robert Skilling To: Subject: BLUEHILL MA 251000 OVC ZR-IP-F 25/24/SE16G24/3040F/S:0.7/R:0.11 Date: Sunday, February 25, 2001 11:19 AM BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA SUNDAY FEBRUARY 25 2001... PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ All of our daily February data to date are included on this page below.... DAILY DISCUSSION....10 A.M. 2/25/2001 QUICK CHANGEOVER FROM SNOW TO FREEZING RAIN AND ICE PELLETS OCCURS BY 9:30 A.M. AFTER 0.7 SNOW/SLEET ACCUMULATION... Snow began just a couple minutes before 7 A.M. this morning and was mostly light snow except for a brief period of moderate snow around 9 a.m. The temperature was still 25 degrees with an increasing SE wind at 10 a.m. and light freezing rain and sleet occurring. A thin accumulation of glaze was noted in the observation. TODAY'S MANUAL OBSERVATIONS AT BLUE HILL... 2/25/2001 SUNDAY 7 A.M. cloudy with 20 miles visibility and snow advancing from the southwest and west...visibility ne-se 50 miles...temp. 26 wind sse at 14 mph... BHO SA 1155 E30 OVC 20 331/26/8/1612/051/ PCPN 8 SSW-N APRCHNG STN VSBY SW 12 NW 10 NE-SE 50 WND GRDLY VEERING/ 8/02// 58014 4/002 10026 20023 10 A.M...light freezing rain and ice pellets and fog and 25 degrees... wind se at 16 gusting 24 mph...total snowfall 0.7 inch..melted 0.11 in. BHO SA 1455 E7 OVC 5ZR-IP-F 294/25/24/1413G21/040/ THN GLZ ZRIPB20SE25 TOTAL NEW SNW PST 3 HRS 0.7 IN/ 8/7/// 58037 6011/ DATA RECORDED FOR SATURDAY FEBRUARY 24... TEMPERATURES.... MAX 30 MIN 19// ASOS MAX 29 ASOS MIN 19 MEAN 25 [- 4] TOTAL DEP FOR MONTH: + 49 degrees The month of February is running 1.8 degrees milder than normal daily. PRECIPITATION.... 24 HRS ENDING 7 A.M...TRACE (STD. GAGE) MONTH: 2.27 [ - 1.44] YEAR: 5.42 [ - 2.44] SNOWFALL... 24 HRS ENDING 7 A.M...TRACE MONTH: 18.4 INS. SEASON: 48.2 INS. PEAK GUST ASOS: 33 MPH NW @ 6:55 A.M. PEAK GUST: 33 MPH NW @ 6:55 A.M. PEAK GUST AERO: 38 MPH WNW @ 12:24 A.M. RECORDS FOR FEBRUARY 25 HIGH 67 IN 1976 LOW -10 IN 1894 PRECIP 2.40 INS IN 1981 WIND 75 MPH S IN 1965 RECORDS FOR FEBRUARY 26 HIGH 67 IN 1957 LOW -07 IN 1928 PRECIP 2.24 INS IN 1979 WIND 66 MPH W IN 1961 DAILY FEBRUARY 2001 DATA....AT BLUE HILL... max/min/mean/dep/precip/snow/sun mins/%/pk gust 1 45/30/38/+13/0/0/325/54/31 W 2 38/27/33/+8/0.02/0.2/060/10/24 W 3 32/18/25/-+/0/T/T/497/82/40 W 4 30/13/22/-3/0/0/176/29/ 20 S 5 36/26/31/+6/1.55/11.5/000/00/ 46 N 6 40/28/34/+8/0.08/1.0/411/67/ 51 NW (62 MPH NW Aero) 7 40/27/34/+8/0/0/615/100/ 35 WNW 8 36/24/30/+4/0.12/1.6/049/08/23 WNW 9 46/29/38/+12/0.07/T/000/00/39 SSW 10 48/20/34/+8/0.01/0/536/86/64 W (69 MPH W Aero) 11 21/10/16/-10/0/0/625/100/48 NW (55 MPH NW Aero) 12 29/05/17/-10/0/0/629/100/30 WNW 13 43/22/33/+6/T/0.1/536/85/29 WNW 14 41/28/35/+8/0.05/0/152/24/35 SSW 15 40/27/34/+7/T/0/191/30/33 NW 16 38/23/31/+4/0.19/0.4/089/14/22 SE 17 34/14/24/-3/0.01/T/372/58/ 59 W (Aero 62 MPH W) 18 27/08/18/-10/0/0/644/100/ 36 WNW 19 38/17/28/+-0/537/83/ 36 SSW 20 53/33/43/+15/0/0/247/38/ 31 SSW 21 39/14/27/-1/0/0/496/76/ 44 WNW (Aero 50 MPH WNW) 22 22/08/15/-14/0.04/0.8/406/62/28 WNW 23 36/18/27/-2/0.13/2.8/.../../37 WNW (Aero 40 MPH WNW) 24 30/19/25/-4/0/0/.../../ 33 MPH WNW (Aero 38 MPH WNW) Robert Skilling