BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MARCH 25, 2007  ALL TIMES ARE IN EASTERN STANDARD TIME   Today's observations:   7 A.M.   Weather: Obscurement with fog Temperature: 32F, Dew point: 32F, Wind: NNW at 6 kt Sea-level pressure: 30.41 inches Hg, rising Visibility: 1/16 mile, fog 6-hour min. temp. 32F 6-hour precipitation: 0.01 inches 24-hour precipitation: 0.41 inches 24-hour snowfall: 3.6 inches BHO SA 1155 W3 X 1/16F 298/32/32/3306/041/ TOTAL NEW SNW PST 24 HRS 3.6 INS/ 8//// 4/004 53034 MANUAL 6001/ ASOS 60001 MANUAL 70041 ASOS 70041 10032 20032     10 A.M.   Weather: Overcast with breaks Temperature: 36F, Dew point: 34F, Wind: NNW at 4 kt Sea-level pressure: 30.47 inches Hg, rising Visibility: 40 miles, higher NW BHO SA 1455 E16 OVC 40 319/36/34/3304/047/ BINOVC VSBY HIER NW WND LGT AND VRBL/ 8/5// 51021   WEATHER SUMMARY FOR SATURDAY, MARCH 24   TEMPERATURE (DEGREES F) MAX.....50    NORMAL.....47 MIN.....31    NORMAL.....30 MEAN....41    NORMAL.....39   DEPARTURE FROM 30-YEAR NORMAL...........+2 TOTAL DEPARTURE FOR THE MONTH..........-38 (-1.8 DEGREES/DAY)   HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........24   DEPARTURE........-2 TOTAL HEATING UNITS FOR THE MONTH.........753   DEPARTURE.......+34 TOTAL HEATING UNITS FOR THE SEASON.......4844   DEPARTURE......-445 TOTAL HEATING UNITS LAST SEASON TO DATE..4817   DIFFERENCE......+27   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............28 E   AT  3:43 P.M.                            AEROVANE.............23 E   AT  3:43 P.M.                          ASOS.................28 E   AT  3:43 P.M.                          DAVIS................25 E   AT  3:43 P.M.         FASTEST MILE FOR YESTERDAY..............19 E   AT  3:56 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........21 E   AT  4:12 P.M.    MAXIMUM 2-MINUTE DAVIS AVERAGE..........19 E   AT  3:47 P.M.    AVERAGE WIND SPEED AND DIRECTION........9.2 E                     ASOS................9.4                         DAVIS...............Unknown    PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.41  DEPARTURE.....+0.25                          ASOS..............0.41 TOTAL PRECIPITATION FOR THE MONTH..........5.83  DEPARTURE.....+1.97                           ASOS..............5.82    TOTAL PRECIPITATION FOR THE YEAR..........11.55  DEPARTURE.....-1.15                          ASOS.............11.45     SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........3.6  DEPARTURE......+3.3 TOTAL SNOWFALL FOR THE MONTH...............13.5  DEPARTURE......+3.7  TOTAL SNOWFALL FOR THE SEASON..............27.4  DEPARTURE.....-27.8        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/-6/1.52/0/000/00       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/+2/0.41/3.6/.../..     28 E    Aero 23 MPH E   3/25 morning low temp. 32 degrees; normal low now 30   * 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 25 HIGH 76 IN 1910 LOW 8 IN 1888, 1956 PRECIP 1.84 INS. IN 1909 SNOWFALL 1.0 INS. IN 1912 PEAK GUST 69 MPH SE IN 1969   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   TODAY'S REPORT By: Stephanie Radner