BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MARCH 9, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED Today's observations: 8 A.M. EDT Weather: Clear with a few clouds Temperature: 29F, Dew point: 11F, Wind: W at 30G48 kt Sea-level pressure: 29.70 inches Hg, rising Visibility: 45 miles 6-hour min temp: 29F 24-hour precipitation: 1.35 inches BHO SA 1155 CLR 45 059/29/11/2630G48/970/ FEW CI DSNT W FEW SC NW-SE PK WND 2656/40/ 8/401 51063 70135 10043 20029 11 A.M. EDT Weather: Scattered stratocumulus Temperature: 32F, Dew point: 14F, Wind: WSW at 25G32 kt Sea-level pressure: 29.81 inches Hg, rising Visibility: 65 miles BHO SA 1455 45 SCT 65 095/32/14/2525G32/981/ PK WND 2442/29/ 8/400 51036 2 P.M. EDT Weather: Scattered stratocumulus Temperature: 36F, Dew point: 15F, Wind: W at 22G32 kt Sea-level pressure: 29.87 inches Hg, rising Visibility: 65 miles 6-hour max. temp: 36 deg F BHO SA 1755 45 SCT 65 116/36/15/2622G32/987/ PK WND 2637/10/ 8/400 51021 10036 20029 WEATHER SUMMARY FOR SATURDAY, MARCH 8 TEMPERATURE (DEGREES F) MAX.....61 NORMAL.....42 MIN.....35 NORMAL.....25 MEAN....48 NORMAL.....34 DEPARTURE FROM 30-YEAR NORMAL..........+14 TOTAL DEPARTURE FOR THE MONTH..........+47 [+5.7 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............17 DEPARTURE.......-14 TOTAL HEATING UNITS FOR THE MONTH...........211 DEPARTURE.......-51 TOTAL HEATING UNITS FOR THE SEASON.........4459 DEPARTURE......-371 TOTAL HEATING UNITS LAST SEASON TO DATE....4396 DIFFERENCE......+63 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............69 SSW AT 7:00 P.M. * AEROVANE.............70 S AT 6:52 P.M. ASOS.................68 SSW AT 6:55 P.M. DAVIS................73 SSW AT 7:00 P.M. FASTEST MILE FOR YESTERDAY..............52 SSW AT 6:59 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........48 S AT 6:56 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........45 SSW AT 11:59 P.M. AVERAGE WIND SPEED AND DIRECTION......17.3 NE ASOS...............16.8 DAVIS..............16.6 ESE [117 deg] * NEW DAILY RECORD; PREVIOUSLY 68e MPH NE, 1941 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.35 DEPARTURE......+1.20 ASOS..............1.36 TOTAL PRECIPITATION FOR THE MONTH..........3.54 DEPARTURE......+2.34 ASOS..............3.51 TOTAL PRECIPITATION FOR THE YEAR..........15.58 DEPARTURE......+5.54 ASOS.............17.82 # # Includes erroneous ASOS precipitation data on 2/13/08. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.4 TOTAL SNOWFALL FOR THE MONTH................3.2 DEPARTURE.....-0.6 TOTAL SNOWFALL FOR THE SEASON..............63.3 DEPARTURE....+14.1 PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 3/1 37/20/29/-3/0.34/3.2/034/05 38 W Aero 40 MPH W 3/2 37/23/30/-2/0/0/.../.. 40 WNW 3/3 46/24/35/+3/0/0/.../.. 42 S Aero 43 MPH S 3/4 58/36/47/+14/0.41/0/089/13 42 S Aero 43 MPH S 3/5 57/33/45/+12/0.31/0/.../.. 45 S 3/6 46/27/37/+4/0/0/.../.. 27 WSW 3/7 44/31/38/+5/.../0/.../.. 29 NE 3/8 61/35/48/+14/.../0/.../.. 69 SSW Aero 70 MPH S NEW DAILY RECORDS FOR MARCH 2008 3/8 PEAK WIND GUST - 69 MPH SSW; PREVIOUSLY 68e MPH NE, 1941 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 9 HIGH 71 IN 2000 LOW 1 IN 2007 PRECIP 2.67 INCHES IN 1998 SNOWFALL 6.3 INCHES IN 2001 PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH] RECORDS FOR MARCH 10 HIGH 69 IN 1977 LOW 2 IN 1984 PRECIP 2.00 INCHES IN 1994 SNOWFALL 4.0 INCHES IN 1997 PEAK GUST 80 MPH NW IN 1974 TODAY'S REPORT PREPARED By: Andrew Hoell