From: Robert Skilling To: Cc: Subject: BLUE HILL MA 281300 BKN 60 26/6/WNW18G32/2994F/S:T/HI 26/lo 20 Date: Wednesday, February 28, 2001 2:15 PM BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA WEDNESDAY FEBRUARY 28 2001... PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ The next meeting of the Blue Hill Observatory Weather Club is scheduled for April 12, 2001. Our speaker will be Christine Clayburg of Channel 7 in Boston. Location of meeting to be announced. All of our daily February data to date are included on this page below.... There was no update on this page for 2/27 as our internet was down... DAILY DISCUSSION....1 P.M. 2/28/2001 LIGHT SNOWFLURRIES THIS MORNING AS ARCTIC AIRMASS INVADES ON THIS LAST DAY OF FEBRUARY AND METEOROLOGICAL WINTER.. This morning's snowflurries reduced visibility to as low as 2 miles in a few quadrants of the horizon rather briefly but our prevailing visibility remained 30 to 50 miles. The air is very dry and nothing accumulated. Temperatures have only risen to the mid-20's from a morning low of 20 degrees. February, like January, will end up about 2 degrees milder than average after a December that averaged almost 4 degrees colder than normal. So, looks like winter 2000-2001 will come out close to normal as far as our temperatures go here at Blue Hill. Spring begins tomorrow! Meteorological spring that is. TODAY'S MANUAL OBSERVATIONS AT BLUE HILL... 2/28/2001 WED 7 A.M. very light snowflurry and 21 deg. wind nnw at 09 mph.. BHO SA 1155 28 SCT E40 BKN 220 BKN 40SW- 170/21/6/3408/003/ MDT CU VCNTY STN CC OVHD AND S SNSHS NW-E VIRGA ALQDS VSBY NNW 8 NE 50 WNW 60 SB50 PCPN VRY LGT/ 8/809/ 51002 6000/ 10027 20020 10 A.M. very light snowflurry and 23 deg. wind nw at 15 gusts 22 mph... BHO SA 1455 E30 BKN 30SW- 163/23/13/3213G19/001/ MDT CU SNSHS ALQDS XCPT NE VIRGA ALQDS VSBY SW-NW 15 NE 60 SB05E10B45 PCPN VRY LGT WND 27V33/ 8/400/ 58007 6000/ 1 P.M. scattered to broken clouds with 60 miles visibility... temp. 26 dewpoint 6 wind wnw 18 gusting 32 mph... BHO SA 1755 E45 BKN 60 138/26/6/3016G28/994/ BKN V SCT VIRGA ALQDS PK WND 3328/53/ WND 27V33/ 8/400/ 58025 6000/ DATA RECORDED FOR TUESDAY FEBRUARY 27... TEMPERATURES.... MAX 42 MIN 24// ASOS MAX 42 ASOS MIN 24 MEAN 33 [+ 3] TOTAL DEP FOR MONTH: + 64 degrees The month of February is running 2 degrees milder than normal daily. PRECIPITATION.... 24 HRS ENDING 7 A.M...TRACE MONTH: 2.68 [ - 1.48] YEAR: 5.83 [ - 2.48] SNOWFALL... 24 HRS ENDING 7 A.M...TRACE MONTH: 19.2 INS. SEASON: 49.0 INS. PEAK GUST ASOS: 32 MPH WNW AT 3:26 P.M. PEAK GUST: 32 MPH WNW AT 3:26 P.M. PEAK GUST AERO: 36 MPH WNW AT 3:26 P.M. RECORDS FOR FEBRUARY 28 HIGH 62 IN 1976 LOW -02 IN 1907/1934 PRECIP 1.79 INS IN 1958 WIND 88 MPH SSW IN 1943 RECORDS FOR MARCH 01 HIGH 62 IN 1972 LOW -03 IN 1886 PRECIP 1.65 INS IN 1900 WIND 78 MPH WSW IN 1976 DAILY FEBRUARY 2001 DATA....AT BLUE HILL... max/min/mean/dep/precip/snow/sun mins/%/pk gust (Aero = the aerovane wind system ) 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 (Aero 44 MPH 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 (Aero 60 MPH N ) 6 40/28/34/+8/0.08/1.0/411/67/ 51 NW (Aero 62 MPH NW) 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/-2/0.13/2.8/230/35/ 37 WNW (Aero 40 MPH WNW) 24 30/19/25/-4/0/0/621/94/ 33 MPH WNW (Aero 38 MPH WNW) 25 47/23/35/+5/0.41/0.8/000/00/ 37 MPH (Aero 40 MPH S) 26 46/28/37/+7/T/0/559/84/ 41 MPH W (Aero 48 MPH W ) 27 42/24/33/+3/0/0/.../../ 32 MPH WNW Robert Skilling