From: Matthew Douglas To: Subject: BLUE HILL MA 161000 CLR 60 41/25/NW11/2996S/ LO 33 Date: Friday, March 16, 2001 11:08 AM BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA FRIDAY MARCH 16 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: AT BLUE HILL OBSERVATORY. Please arrive at the Observatory around 7 p.m. All of our daily March data to date is included on this page below.... this includes all the daily precipitation and snowfall data for the calendar days ending at midnight...sunshine data now up-to-date...... ATTN: CONTRACTORS AND SNOWPLOW OPERATORS..... (please see discussion of March 5-7 nor'easter below) DAILY DISCUSSION....10 A.M. 3/16/2001 A couple of very nice days on the summit yesterday and Today. Yesterday featured a good deal of sunshine with the temperature reaching a maximum of 47.5 degrees. Overnight low this morning was 33.1! So far today we're continuing the trend of sunny skies, but the temperature is slowly rising and has just reached 40 within the last half hour. We should see a max in the mid to upper 40s this afternoon. There's still 12 inches on the ground here at the summit.... TODAY'S MANUAL OBSERVATIONS AT BLUE HILL... 7 A.M. BHO SA 1155 CLR 50 136/34/25/3211/993/ CI DSNT W-N HAZY/ 8/001/ 4/012 53027 10039 20033 10 A.M. BHO SA 1455 CLR 60 139/41/25/3110/996/ CI DSNT NW-N/ 8/001/ 51003 DATA RECORDED FOR THURSDAY MARCH 15... TEMPERATURES.... MAX 48 MIN 32// ASOS MAX 47 ASOS MIN 32 MEAN 40 [+ 5] TOTAL DEP FOR MONTH: - 46 degrees The month of March is averaging 3.1 degrees colder than normal daily... PRECIPITATION....ENDING 7 A.M. 3/16/2001 24 HRS ENDING 7 A.M...0.00 IN. MONTH: 5.33 [ + 3.16] YEAR: 11.16 [ + 0.53] SNOWFALL... 24 HRS ENDING 7 A.M...0.0 MONTH: 33.5 INS. SEASON: 82.5 INS. WIND DATA.... PEAK GUST ASOS: 38 MPH WNW AT 12:40 A.M. PEAK GUST: 43 MPH W AT 12:40 A.M. PEAK GUST AERO: 38 MPH W AT 12:33 A.M. RECORDS FOR MARCH 16 HIGH 73 IN 1990 LOW 08 IN 1932 PRECIP 1.95 INS IN 1900 WIND 79 MPH NE IN 1956 RECORDS FOR MARCH 17 HIGH 65 IN 1936, 1989 LOW 06 IN 1885 PRECIP 1.97 INS IN 1968 WIND 70 MPH SSW IN 1973 THE MARCH 5-7 SNOWSTORM... Please DO NOT USE our 23 inches for the March 5-7 Nor'easter snowfall recorded here at the summit of Blue Hill for billing your customers! This is a maximum amount and very localized amount because of our elevation of 600 feet above sea level. Please check out the National Weather Service, Boston, homepage and click under "storm totals" for a list of accurate snowfall totals from many towns and cities throughout the area. Please go to: www.nws.noaa.gov/er/box You can probably use 15 to 17 inches for the Milton-Canton-Randolph area. A total of 10 inches fell in Hingham. DAILY MARCH 2001 DATA....AT BLUE HILL... max/min/mean/dep/precip/snow/sun mins/%/pk gust (Aero = the aerovane wind system ) 1 29/15/22/-9/T/T/311/46/ 29 W 2 26/16/21/-10/0.01/0.3/000/00/ 18 N 3 28/21/25/-7/0.05/0.9/054/08/ 21 ENE 4 28/20/24/-8/0.05/0.8/014/02/ 24 ENE 5 32/26/29/-3/1.76/7.0/000/00/ 60 NE (estimated wind) 6 31/27/29/-3/1.85/15.5/000/00/ 55 NNE (estimated wind) 7 29/23/26/-7/0.03/0.5/000/00/ 32 N 8 39/24/32/-1/0/0/306/44/ 23 SSE 9 38/28/33/-1/0.54/6.3/000/00/ 31 ENE 10 38/28/33/-1/0.19/2.2/154/22/ 44 NW (50 NW Aero ) 11 43/25/34/0/0/0/387/55/ 45 WNW (50 WNW Aero ) 12 41/24/33/-2/000/00/678/96/ 32 NW 13 40/28/34/-1/0.85/T/000/00/ 28 E (33 E Aero ) 14 42/32/37/+2/0/0/142/20/ 53 W (Aero 53 W ) 15 am low was 32... Here are total snowfall measurements for 24 hours ending 7 a.m. during the nor-easter and daily melted totals: 3/5....1.0 inch (0.16 in. ) 3/6...12.5 inches ( 2.47 ins.) 3/7... 9.5 inches (1.01 ins. ) Matt Douglas