BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, FEBRUARY 8, 2009 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Overcast altocumulus Temperature: 43F, Dew point: 36F, Wind: WSW at 17G22 kt Sea-level pressure: 29.76 inches Hg, falling Visibility: 9 miles, hazy 6-hour minimum temperature: 40F Snow depth on ground: 9 inches BHO SA 1155 150 OVC 9 079/43/36/2417G22/976/ FEW BINOVC NW-NE HAZY/ 8/06/ 4/009 58014 10043 20040 10 A.M. Weather: Scattered altocumulus, windy Temperature: 48F, Dew point: 35F, Wind: W at 29G41 Sea-level pressure: 29.78 inches Hg, rising Visibility: 10 miles BHO SA 1455 150 SCT 10 085/48/35/2729G41/978/ FEW SC N HAZY 2741/1453/ 8/460 53006 1 P.M. Weather: Scattered stratocumulus, windy Temperature: 45F, Dew point: 26F, Wind: W at 30G40 Sea-level pressure: 29.81 inches Hg, rising Visibility: 25 miles 6-hour maximum temperature: 49F BHO SA 1755 55 SCT 25 094/45/26/2730G40/981/ HAZY PK WND 2748/1740/ 8/400 50009 10049 20043 WEATHER SUMMARY FOR SATURDAY, FEBRUARY 7 TEMPERATURE (DEGREES F) MAX.....43 NORMAL.....35 MIN.....16 NORMAL.....19 MEAN....29 NORMAL.....27 DEPARTURE FROM 30-YEAR NORMAL..............+2 TOTAL DEPARTURE FOR THE MONTH.............-15 [-2.3 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY.............36 DEPARTURE.........-2 TOTAL HEATING UNITS FOR THE MONTH............285 DEPARTURE........+13 TOTAL HEATING UNITS FOR THE SEASON..........3853 DEPARTURE........+45 TOTAL HEATING UNITS LAST SEASON TO DATE.....3472 DIFFERENCE......+426 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............45 S AT 8:30 P.M. AEROVANE.............44 S AT 8:35 P.M. ASOS.................44 SSW AT 8:46 P.M. DAVIS................46 S AT 8:31 P.M. FASTEST MILE FOR YESTERDAY..............37 S AT 8:32 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........35 SSW AT 8:46 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........34 S AT 8:46 P.M. AVERAGE............17.6 S ASOS...............17.9 DAVIS..............17.8 S [190 DEGREES] * Last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00 DEPARTURE.........-0.15 ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........0.49 DEPARTURE.........-0.56 ASOS...............0.45 TOTAL PRECIPITATION FOR THE YEAR............4.65 DEPARTURE.........-1.18 ASOS...............5.65 # # Includes erroneous ASOS precipitation data on 1/1/09 and 1/2/09 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.........-0.7 TOTAL SNOWFALL FOR THE MONTH................6.5 DEPARTURE.........+1.9 TOTAL SNOWFALL FOR THE SEASON..............61.6 DEPARTURE........+27.6 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 2009 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system gust when significant TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 2/1 45/15/30/+4/0/0/.../.. 35 SW 2/2 50/32/41/+15/0/0/.../.. 29 NNW 2/3 33/22/28/+2/0.44/5.6/000/00 39 N AERO 38 MPH N 2/4 24/10/17/-9/0.05/0.9/.../.. 37 WNW 2/5 17/3/10/-17/0/0/.../.. 33 W 2/6 26/4/15/-12/0/0/.../.. 26 W 2/7 42/16/29/+2/0/0/.../.. 45 S AERO 44 MPH S NEW DAILY RECORDS FOR FEBRUARY 2009... None to date DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 8 HIGH 60F IN 1933 LOW -9F IN 1934 PRECIP 2.50 INS. IN 1945 SNOWFALL 11.0 INS. IN 1891 PEAK GUST 63e MPH NE IN 1945 RECORDS FOR FEBRUARY 9 HIGH 58F IN 1990 LOW -21F IN 1934 [LOWEST TEMPERATURE ON RECORD] PRECIP 2.12 INS. IN 1969 SNOWFALL 13.0 INS. IN 1969 PEAK GUST 89 MPH NE IN 1969 TODAY'S REPORT PREPARED By: Andrew Hoell