BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, FEBRUARY 15, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME VALENTINE'S DAY STORM BROUGHT MORE RAIN THAN SNOW.. Yesterday's nor'easter, beginning just before midnight, brought a total of 2.11 inches of precipitation, mostly in the form of rain and freezing rain. 2.09 inches of precipitation fell on February 14, setting a new record for the date; the previous record was 1.95 inches in 1940. The total snowfall for the storm was only 1.6 inches. The peak wind gust yesterday was 47 MPH NE at 11:10 a.m. The peak gust so far today was 52 MPH WSW at 11:22 a.m. Today's observations: 7 A.M. Weather: Clear Temperature: 10F, Dew point: 0F, Wind: W AT 20G30 kts Peak wind: WSW @ 34 kts at 19 mins. past the hour Sea-level pressure: 29.54 inches Hg, rising Visibility: 70 miles Snow on ground: 1.6 inches 6-hourly min. temp. 10 deg. 24-houry precip: 1.78 inch 24-hourly snowfall: 0.4 ins. BHO SA 1155 CLR 70 002/10/00/2620G30/954/ FEW DSNT SC N-E PK WND 2534/19 THN GLZ TOTAL NEW SNW PST 24 HRS 0.4 IN/ 8/500 4/002 53040 ASOS 70180 MANUAL 70178 10014 20010 10 A.M. Weather: Clear Temperature: 16F, Dew point: -2F, Wind: W at 21G35 kts Peak wind: W @ 37 kts at 43 mins. past the hour Sea-level pressure: 29.58 inches Hg, rising Visibility: 70 miles BHO SA 1455 CLR 70 016/16/-2/2721G35/958/ FEW CI SW WND 21V31 PK WND 2737/43/ 8/001 51014 1 P.M. Weather: Clear Temperature: 20F, Dew point: -3F, Wind: WSW at 17G35 kts Sea-level pressure: 29.58, rising Visibility: 65 miles, light haze 6-hourly max. temp. 21 deg. BHO SA 1755 CLR 65 016/20/-3/2417G35/958/ FEW SC DSNT NE-E AND S-SW WND 20V30 PK WND 2537/08 LGT HZ/ 8/500 53000 10020 20010 WEATHER SUMMARY FOR WEDNESDAY, FEBRUARY 14 TEMPERATURE (DEGREES F) MAX.....36 NORMAL.....36 MIN.....13 NORMAL.....20 MEAN....25 NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL.........- 3 TOTAL DEPARTURE FOR THE MONTH.........-80 (-5.9 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........40 DEPARTURE.......+ 3 TOTAL HEATING UNITS FOR THE MONTH.........613 DEPARTURE.......+77 TOTAL HEATING UNITS FOR THE SEASON.......3557 DEPARTURE......-515 TOTAL HEATING UNITS LAST SEASON TO DATE..3569 DIFFERENCE......-12 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............47 NE AT 11:10 A.M. * AEROVANE.............52 NE AT 11:47 A.M. ASOS.................47 NE AT 11:10 A.M. DAVIS................43 ENE AT 10:41 A.M. FASTEST MILE FOR YESTERDAY..............37 N AT 5:30 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE...........36 NNW AT 5:28 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........35 NNW AT 5:28 A.M. AVERAGE WIND SPEED AND DIRECTION......21.0 N ASOS..............20.2 DAVIS.............18.8 NNE [16 deg] * last of several occurrences.. PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.78 DEPARTURE.....+1.64 ASOS..............1.80 TOTAL PRECIPITATION FOR THE MONTH..........2.34 DEPARTURE.....+0.31 ASOS..............2.35 TOTAL PRECIPITATION FOR THE YEAR...........5.28 DEPARTURE.....-1.53 ASOS..............5.22 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.4 DEPARTURE......-0.2 TOTAL SNOWFALL FOR THE MONTH................2.3 DEPARTURE......-6.6 TOTAL SNOWFALL FOR THE SEASON...............8.9 DEPARTURE.....-29.4 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2007......CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 2/1 35/20/28/+2/0/0/126/21 37 S Aero 34 MPH S 2/2 35/28/32/+6/0.18/0.3/000/00 20 NW 2/3 32/19/26/0/0.05/0.4/574/95 39 W Aero 47 MPH W 2/4 22/10/16/-10/0/0/601/99 39 WSW Aero 40 MPH WSW 2/5 16/5/11/-16/0/0/493/81 61 W Aero 60 MPH W 2/6 24/10/17/-10/0/0/593/97 38 W Aero 36 MPH W 2/7 21/8/15/-12/0/0/474/77 43 W Aero 41 MPH W 2/8 25/11/18/-9/0/0/370/60 48 WSW 2/9 26/15/21/-6/0/0/600/97 44 WSW Aero 42 MPH WSW 2/10 32/13/23/-4/0/0/199/32 28 W 2/11 31/14/23/-4/0/0/456/73 27 SSW 2/12 36/20/28/0/0/0/602/96 43 WSW Aero 40 MPH W 2/13 22/6/14/-14/0.02/0.2/.../.. 28 NW 2/14 36/13/25/-3/2.09/1.4/000/00 47 NE Aero 52 MPH NE 2/15 morning low temp. 10 deg; normal low now 20 deg. there is 1.6 inch of snow on the ground DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 15 HIGH 60F IN 1954 LOW -18F IN 1943 PRECIP 1.28 INCHES IN 1950 SNOWFALL 11.2 INCHES IN 1940 PEAK GUST 94e MPH WNW IN 1946 RECORDS FOR FEBRUARY 16 HIGH 62F IN 1954 LOW -16F IN 1943 PRECIP 1.91 INCHES IN 1958 SNOWFALL 18.6 INCHES IN 1958 PEAK GUST 78 MPH W IN 1967 TODAY'S REPORT By: Stephanie Radner