BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, FEBRUARY 13, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 7 A.M. Weather: Broken stratocumulus, broken altocumulus Temperature: 26F, Dew point: 24F, Wind: WNW at 9 kt Sea-level pressure: 29.92 inches Hg, rising Visibility: 25 miles BHO SA 1155 20 BKN 100 BKN 25 133/26/24/3009/992/ FEW LWR SC NE VSBY LWRNG N-NE/ 4/010 8/470 53044 10029 20026 10 A.M. Weather: Broken stratocumulus Temperature: 30F, Dew Point: 21F, Wind: NW at 14 kt Visibility: 60 miles Sea-level pressure: 30.05 inches Hg, rising BHO SA 1455 20 BKN 40 BKN 60 176/30/21/3214/005/ SB13E15 VIRGA E-S/ 8/400 51043 6000/ 1 P.M. Weather: Scattered stratocumulus Temperature: 35F, Dew Point: 13F, Wind: WNW at 15 kt Visibility: 70 miles BHO SA 1755 50 SCT 70 189/35/13/2915G22/009/ CLR SW-W/ 8/500 51013 6000/ 10035 20026 WEATHER SUMMARY FOR SATURDAY, FEBRUARY 12: TEMPERATURE (DEGREES F) MAX.....36 NORMAL.....35 ASOS.....36 AT 5:42 P.M. MIN.....24 NORMAL.....20 ASOS.....23 AT 5:12 A.M. MEAN....30 NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL......+2 TOTAL DEPARTURE FOR THE MONTH.....+86 (+7.2 DEGREES/DAY) HEATING DEGREE DAY INFORMATION TOTAL HEATING DEGREE DAYS FOR FRIDAY.........35 DEPARTURE.....-2 TOTAL HEATING DEGREE DAYS FOR THE MONTH.....336 DEPARTURE....-88 TOTAL HEATING DEGREE DAYS FOR THE SEASON...3816 DEPARTURE...-144 TOTAL HEATING DEGREE DAYS FOR LAST YEAR....3999 DIFFERENCE..-181 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........36 W AT 4:51 P.M. AEROVANE.........36 W AT 4:50 P.M. ASOS.............30 W AT 4:52 P.M. FASTEST MILE FOR YESTERDAY..........34 W AT 4:51 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......33 W AT 4:57 P.M. AVERAGE WIND SPEED AND DIRECTION..14.6 WSW ASOS...........15.1 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE DEPARTURE....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.33 DEPARTURE....-0.42 ASOS..............1.29 TOTAL PRECIPITATION FOR THE YEAR...........7.57 DEPARTURE....+1.04 ASOS..............7.12* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.6 TOTAL SNOWFALL FOR THE MONTH................3.7 DEPARTURE.....-4.0 TOTAL SNOWFALL FOR THE SEASON..............72.5 DEPARTURE....+35.4 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2005......CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 2/1 38/18/28/+2/0/0/600/100 13 MPH NNW 2/2 35/20/28/+2/0/0/549/91 23 MPH N 2/3 36/20/28/+2/0.28/0.2/012/02 27 MPH NNE 2/4 33/30/32/+6/0.02/0.1/000/00 33 MPH N 2/5 49/30/40/+13/0/0/605/99 30 MPH N 2/6 41/30/36/+9/0/0/613/100 31 MPH N 2/7 50/29/40/+13/0/0/400/65 22 MPH S 2/8 47/36/42/+15/0/0/012/02 24 MPH SSW 2/9 50/36/43/+16/0.01/0/.../.. 25 MPH W 2/10 38/30/34/+7/.../../.../.. 26 MPH WNW 2/11 30/21/26/-1/.../../.../.. 44 MPH WNW (Aero: 51 WNW) 2/12 36/24/30/+2/0/0/.../.. 36 MPH W DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 13 HIGH 64F IN 1951 LOW -10F IN 1967 PRECIP 1.90 INCHES IN 1966 SNOWFALL 13.5 INCHES IN 1894 PEAK GUST 60 MPH SE IN 19 RECORDS FOR FEBRUARY 14 HIGH 56F IN 1949 LOW -8F IN 1979 PRECIP 1.95 INCHES IN 1940 SNOWFALL 11.0 INCHES IN 1914 PEAK GUST 83 MPH SSW IN 2000 TODAY'S REPORT BY: Andrew Hoell