BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, FEBRUARY 21, 2008  ALL TIMES ARE IN EASTERN STANDARD TIME   Today's observations:   7 A.M. Weather: Clear, few stratocumulus distant NE-SE Temperature: 15F, Dew point: 11F, Wind: W at 10 kts Sea-level pressure: 30.29 inches Hg, rising Visibility: 40 miles 6-hour min temp: 14F BHO SA 1155 CLR 40 256/15/11/2810/029/ FEW SC DSNT NE-SE/ 8/500 53022 10017 20014    10 A.M. Weather: Clear, few stratocumulus distant NW-N-SE Temperature: 22F, Dew point: 4F, Wind: W at 12 kts Sea-level pressure: 30.32 inches Hg, rising Visibility: 55 miles BHO SA 1455 CLR 55 269/22/4/2812/032/ FEW SC DSNT NW-N-SE/ 8/500 50013   1 P.M.  Weather: Clear, few stratocumulus distant NE-SE Temperature: 27F, Dew point: 3F, Wind: W at 11G22 kts Wind: variable direction WSW-NW Sea-level pressure: 30.30 inches Hg, falling Visibility: 75 miles 6-hour max. temp: 27F BHO SA 1755 CLR 75 262/27/3/2811G22/030/ FEW SC DSNT NE-SE WND 24V32/ 8/500 58007 10027 20015   WEATHER SUMMARY FOR WEDNESDAY, FEBRUARY 20   TEMPERATURE (DEGREES F) MAX.....28    NORMAL.....37 MIN.....18    NORMAL.....21 MEAN....23    NORMAL.....29 DEPARTURE FROM 30-YEAR NORMAL...........-6 TOTAL DEPARTURE FOR THE MONTH..........+92 [+4.4 DEGREES/DAY]   HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............42  DEPARTURE......+ 6 TOTAL HEATING UNITS FOR THE MONTH...........659  DEPARTURE......-95 TOTAL HEATING UNITS FOR THE SEASON.........3896  DEPARTURE.....-395 TOTAL HEATING UNITS LAST SEASON TO DATE....3817  DIFFERENCE.....+79    PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............36 W   AT 12:22 A.M. *                    AEROVANE.............34 W   AT 12:25 A.M. *                         ASOS.................36 W   AT 12:17 A.M.                     DAVIS................36 W   AT 12:17 A.M.           FASTEST MILE FOR YESTERDAY..............27 W   AT 12:21 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........25 WNW AT 12:41 A.M.   MAXIMUM 2-MINUTE DAVIS AVERAGE..........27 W   AT 12:21 A.M.     AVERAGE WIND SPEED AND DIRECTION......14.2 WSW                      ASOS...............13.3                     DAVIS..............14.3 W   [260 deg.]  * last of several occurrences   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.14                            ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........6.96  DEPARTURE......+4.09                          ASOS..............N/A #  TOTAL PRECIPITATION FOR THE YEAR..........10.83 DEPARTURE......+3.18                          ASOS..............N/A # # ASOS PRECIPITATION DATA ERROR ON 2/13/08   MONTHLY AND 2008 ASOS TOTAL NOT AVAILABLE SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.....-0.5 TOTAL SNOWFALL FOR THE MONTH................7.6  DEPARTURE.....-4.4 TOTAL SNOWFALL FOR THE SEASON..............51.7  DEPARTURE....+10.3    PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2008 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, records not finalized   2/1  53/26/40/+14/1.16/0.1/000/00  54 SSE  Aero 59 MPH SSE TSTM 2/2  51/34/43/+17/T/0/391/65       52 SW   Aero 52 MPH SW 2/3  45/33/39/+13/0/0/381/63       21 SW 2/4  38/29/34/+8/0/0/006/01        18 SE  2/5  45/33/39/+12/0.42/0/000/00    36 SE   Aero 37 MPH SE  2/6  46/34/40/+13/0.88/0/000/00    36 NE   Aero 33 MPH NE  TSTM 2/7  34/26/30/+3/0.59/1.9/000/00   40 NE   Aero 40 MPH NE  TSTM 2/8  28/24/26/-1/0.08/0.5/000/00   21 W 2/9  36/21/29/+2/0.09/1.0/118/19   30 ESE 2/10 40/11/26/-1/0.08/0.9/068/11 * 56 W    Aero 61 MPH W  2/11 22/7/15/-12/0/0/612/98        56 W    Aero 60 MPH W 2/12 26/9/18/-10/0.27/2.0/351/56   25 W  2/13 53/22/38/+10/2.80/1.0/000/00  52 S    Aero 54 MPH S 2/14 36/26/31/+3/0/0/517/82        39 WNW 2/15 46/24/35/+7/0/0/406/64        47 W    Aero 50 MPH W   2/16 29/16/23/-5/0/0/586/92        32 W 2/17 44/18/31/+2/0.02//0/415/65    43 SSE  Aero 43 MPH SSE  2/18 59/37/48/+19/0.55/0/006/01    69 S    Aero 70 MPH S  2/19 43/22/33/+4/0.02/0.2/600/93   44 SSW  Aero 46 MPH SSW 2/20 28/18/23/-6/0/0/.../..        36 W   2/21 morning low temp. 14F; our normal low is now 21F   * correction made to sunshine minutes previously reported for 2/10   NEW DAILY RECORDS FOR FEBRUARY 2008:   2/13 - New record daily precipitation 2.80 inches; surpasses previous record of 1.90 inches in 1966   2/18 - New record peak wind gust of 69 MPH S; surpasses 65 MPH (estimated) NNW in 1952   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR FEBRUARY 21 HIGH 62F IN 1930 LOW -6F IN 1950 PRECIP 2.42 INCHES IN 1898 SNOWFALL 9.0 INCHES IN 1929 PEAK GUST 72 MPH WNW IN 1967   RECORDS FOR FEBRUARY 22 HIGH 63F IN 1997 LOW -1F IN 1918 PRECIP 1.38 INCHES IN 1900 SNOWFALL 8.0 INCHES IN 1893 PEAK GUST 74 MPH S IN 1974   TODAY'S REPORT PREPARED By: Stephanie Radner