BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, MARCH 26, 2007  ALL TIMES ARE IN EASTERN STANDARD TIME   LIGHT RAIN BEGINNING EARLY AFTERNOON...   After an overcast morning with just a few peeks of sunshine, the first drops of rain were observed around 2 p.m. Temperatures started out with a low of 34 degrees and the high has been 45 deg. through early afternoon.    Today's observations:   7 A.M.   Weather:  Temperature: 36F, Dew point: 32F, Wind: SSW at 11 kts Sea-level pressure: 30.45 inches Hg, steady Visibility: 15 miles, thin fog 6-hour min. temp. 34F Snow depth: trace BHO SA 1155 120 SCT E200 BKN 250 OVC 15 312/36/32/2011/045/ BINOVC INVSN PRSNT ESTMTD TOP 6 HND OVR CTY N THN F/ 8/071 55002 10036 20034   10 A.M.   Weather: Overcast altocumulus/altostratus Temperature: 44F, Dew point: 35F, Wind: S at 14 kts Sea-level pressure: 30.47 inches Hg, rising Visibility: 20 miles, hazy BHO SA 1455 E95 BKN 130 OVC 20 297/44/35/1814/041/ SUN OCNL DMLY VSB HAZY/ 56015     1 P.M.   Weather: Overcast  Temperature: 44F, Dew point: 32F, Wind: S at 20G26 kts Wind remark: Peak wind S @ 26 kts at 54 past the hour Sea-level pressure: 30.31 Hg, falling  Visibility: 25, 30 NE-SE  Six hourly max. 45 deg. BHO SA 1755 E75 BKN 85 OVC 25 264/44/32/1820G26/031/ VIRGA W VSBY NE-SE 30 VSBY LWRG W PK WND 1826/54/ 8/02/ 58033 10045 20036    WEATHER SUMMARY FOR SUNDAY, MARCH 25   TEMPERATURE (DEGREES F) MAX.....45    NORMAL.....48 MIN.....32    NORMAL.....30 MEAN....39    NORMAL.....39   DEPARTURE FROM 30-YEAR NORMAL........... 0 TOTAL DEPARTURE FOR THE MONTH..........-38 (-1.7 DEGREES/DAY)   HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........26   DEPARTURE........ 0 TOTAL HEATING UNITS FOR THE MONTH.........779   DEPARTURE.......+34 TOTAL HEATING UNITS FOR THE SEASON.......4870   DEPARTURE......-445 TOTAL HEATING UNITS LAST SEASON TO DATE..4846   DIFFERENCE......+24   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............16 WSW AT  4:09 P.M. *                           AEROVANE.............14 N   AT  8:32 A.M.                          ASOS.................14 SW  AT 11:59 P.M.                           DAVIS................16 W   AT  3:53 P.M.         FASTEST MILE FOR YESTERDAY..............11 SW  AT 11:59 P.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...........12 SW  AT 11:59 P.M.     MAXIMUM 2-MINUTE DAVIS AVERAGE..........13 W   AT  4:39 P.M.    AVERAGE WIND SPEED AND DIRECTION.......6.6 W                     ASOS...............6.9                         DAVIS..............N/A   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.16                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........5.83  DEPARTURE.....+1.81                           ASOS..............5.82    TOTAL PRECIPITATION FOR THE YEAR..........11.55  DEPARTURE.....-1.31                          ASOS.............11.45     SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.3 TOTAL SNOWFALL FOR THE MONTH...............13.5  DEPARTURE......+3.4  TOTAL SNOWFALL FOR THE SEASON..............27.4  DEPARTURE.....-28.1        PRELIMINARY CLIMATE SUMMARY FOR MARCH 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   3/1  40/22/31/-1/0/0/512/76          24 NW   Aero 23 MPH NW 3/2  49/28/39/+7/1.74/0.4/000/00     48 E    Aero 45 MPH E 3/3  58/33/46/+14/0/0/489/72         44 WNW  Aero 43 MPH WNW 3/4  40/26/33/0/0/0/471/69           37 W 3/5  37/19/28/-5/T/T/198/29          58 W    Aero 57 MPH W 3/6  19/3/11/-22/0/0/667/97 *        57 W    Aero 61 MPH W 3/7  22/2/12/-21/0/0/504/73          28 SW    3/8  25/5/15/-19/T/T/471/68          51 WNW  Aero 54 MPH WNW 3/9  34/1/18/-16/0/0/668/96 *        25 S     3/10 49/22/36/+2/0/0/322/46          39 S    Aero 39 MPH S 3/11 51/33/42/+7/0.26/0/513/73       32 W 3/12 55/31/43/+8/0/0/423/60          24 SSW 3/13 60/36/48/+13/0/0/319/45         35 S    Aero 33 MPH S 3/14 66/42/54/+18/0/0/405/57         36 S 3/15 54/35/45/+9/0.07/0/000/00       36 NW 3/16 35/24/30/-6/1.65/8.5/000/00     55 NE   Aero 53 MPH NE 3/17 34/24/29/-6/1.52/T/000/00       51 NNE  Aero 50 MPH NE 3/18 31/20/26/-11/0/0/258/37         43 W    Aero 42 MPH W 3/19 40/22/31/-6/0.18/1.0/442/61     38 S    Aero 37 MPH S 3/20 42/21/32/-6/0/0/677/93          46 WSW  Aero 47 MPH W 3/21 36/16/26/-12/0/0/702/96         33 S 3/22 52/31/42/+4/T/0/132/18          47 S    Aero 50 MPH S 3/23 57/41/49/+11/T/0/.../..         35 W 3/24 50/31/41/+2/0.40/3.5/.../.. **  28 E    Aero 23 MPH E 3/25 45/32/39/0/0.01/0.1/.../..      16 WSW   3/26 morning low temp. 34 deg; normal now 31 deg.   ** precip. and snowfall corrected for 24th; [-0.01 precip & -0.1 snowfall]    and added to 25th.      * Record low maximum temperature of 19 on the 6th surpasses previous 21 set   in 1916. * Record low minimum temperature of 3 on the 6th ties previous 3 set in 1948. * Record low minimum temperature of 1 on the 9th breaks previous 5 set in   1885, 1943, and 1996.   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR MARCH 26 HIGH 76 IN 1922, 1949 LOW 6 IN 1960 PRECIP 1.99 INS. IN 1988 SNOWFALL 5.4 INS. IN 2001 PEAK GUST 63 MPH S IN 1970   RECORDS FOR MARCH 27 HIGH 78 IN 1998 LOW 12 IN 1975 PRECIP 1.05 INS. IN 1913 SNOWFALL 6.6 INS. IN 1959 PEAK GUST 62 MPH NW IN 1965, SE IN 1992   TODAY'S REPORT By: Robert Skilling