BLUE HILL OBSERVATORY MILTON, MA MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, NOVEMBER 9, 2010 ALL TIMES ARE IN EASTERN STANDARD TIME STORM SYSTEM CONTINUES TO AFFECT NEW ENGLAND... 0.58 INCH RAIN ADDED TO TOTAL Rainfall continued overnight Monday into Tuesday. An additional 0.58 inch was measured at 7 AM EST, bringing the storm total since Sunday evening to 1.36 inches. Drizzle began late this morning, and has persisted into the afternoon. Rainfall is now more than 1.5 inches above average for the month, and more than 13 inches above average for 2010. Winds are much lighter than yesterday, hanging in the 15-20 mph range for the most part. The sun made a very brief appearance earlier today, only lasting a few minutes. With a low temperature of 42F this morning and a high near 50F this afternoon, the average temperature for the day will likely end up slightly above normal. Today will likely mark on the 2nd above normal day so far this month. Today's observations: 7 A.M. Weather: Broken stratocumulus, overcast stratus, few lower cumulus/ cumulus fractus distant SSW-WSW, breaks in overcast/partial clearing distant S and distant SSW-NW, dark sky distant E-SSE Temperature: 42F, Dew point: 42F; Wind: NNW at 14G19 kts Wind: Direction variable from WNW-N Sea-level pressure: 29.76 inches Hg, rising Visibility: 55 miles, 65 miles NW, mountains 45 mi. WNW and 60-70 mi. NW in clouds 6-hour minimum temp: 41F 24-hour precip. 0.58 inch BHO SA 1155 E5 BKN 15 OVC 55 077/42/42/3314G19/976/ FEW LWR CU/CUFRA DSNT SSW-WSW BINOVC/PRTL CLRG DSNT S AND DSNT SSW-NW DRK SKY DSNT E-SSE VSBY NW 65 MTNS INCLD 45 WNW AND 60/70 NW WND 30V01/ 8/5// 52017 MANUAL 70058 ASOS 70061 10045 20042 10 A.M. Weather: Light drizzle, broken stratocumulus, overcast nimbostratus, breaks in overcast/partial clearing along horizon SSW and W, higher nimbostratus layer occassionally visible, rain shower WNW-N-ESE moving S, precipitation very light Temperature: 45F, Dew point: 44F; Wind: NNW at 10 kts, Wind: Direction variable WNW-NNE Sea-level pressure: 29.80 inches Hg, rising Visibility: 20 miles, very light drizzle 3-hour rainfall: Trace BHO SA 1455 E10 BKN 20 OVC 20L- 093/45/44/3310/980/ BINOVC/PRTL CLRG ALG HRZN SSW AND W HIER NS LYR OCNLY VSB RW WNW-N-ESE MOVG S WND 29V02 PCPN VRY LGT/ 8/5// 51016 MANUAL 6000/ 1 P.M. Weather: Drizzle, broken stratus/stratus fractus, overcast nimbostratus, few stratus fractus, ceiling ragged, higher nimbostratus layer visible, thin fog/haze Temperature: 49F, Dew point: 48F; Wind: N at 10G18 kts, Wind: Direction variable NW to NE Sea-level pressure: 29.80 inches Hg, falling slightly Visibility: 9 miles, drizzle and thin fog/haze 6-hour max. temp: 49F 6-hour rainfall: Trace BHO SA 1755 E12 BKN 22 OVC 9L 092/49/48/3610G18/980/ FEW STFRA CIG RGD HIER NS LYR VSB THN FG/HZ WND 31V40/ 8/7// 57001 MANUAL 6000/ 10049 20042 WEATHER SUMMARY FOR MONDAY, NOVEMBER 8 TEMPERATURE (DEGREES F) MAX.....47 NORMAL.....52 MIN.....32 NORMAL.....37 MEAN....40 NORMAL.....44 DEPARTURE FROM 30-YEAR NORMAL...............-4 TOTAL DEPARTURE FOR THE MONTH..............-27 [-3.6 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............25 DEPARTURE........+4 TOTAL HEATING UNITS FOR THE MONTH...........183 DEPARTURE.......+26 TOTAL HEATING UNITS FOR THE SEASON..........660 DEPARTURE.......-88 TOTAL HEATING UNITS LAST SEASON TO DATE.....782 DIFFERENCE.....-122 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.............60 N AT 9:02 A.M. AEROVANE..............60 N AT 9:02 A.M. ASOS..................58 NNE AT 9:16 A.M. DAVIS.................64 NNW AT 9:01 A.M. THE FASTEST MILE FOR YESTERDAY...........43 N AT 9:00 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE............41 NNE AT 9:02 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE...........42 N AT 9:02 A.M. AVERAGE WIND SPEED AND DIRECTION.......19.2 N ASOS................17.3 DAVIS...............18.3 NNW [337 DEG] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.58 DEPARTURE........+0.43 ASOS..............0.62 TOTAL PRECIPITATION FOR THE MONTH..........2.78 DEPARTURE........+1.58 ASOS..............2.83 TOTAL PRECIPITATION FOR THE YEAR..........56.50 DEPARTURE.......+13.28 ASOS.............56.38** ** ASOS missing rainfall due to system failure on 6/24-25 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.1 DEPARTURE.....-0.4 TOTAL SNOWFALL FOR THE SEASON...............0.1 DEPARTURE.....-0.6 * * Seasonal total corrected from prior reports. PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2010 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust when significant TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 11/1 49/29/39/-8/0.00/.../.. 24 WNW 11/2 46/33/40/-6/0.00/.../.. 21 NW 11/3 50/28/39/-7/0.00/.../.. 20 SSE 11/4 54/37/46/0/.../0/0 43 NNE AERO 45 MPH NE 11/5 59/44/52/+7/.../.../.. 36 S AERO 39 MPH S 11/6 48/38/43/-2/.../.../.. 20 N 11/7 42/33/38/-7/.../T/000/00 32 NW 11/8 47/32/40/-4/.../0.1/.../.. 60 N AERO 60 MPH N 11/9 our morning low temp: 42F; the normal low is now 36F NEW DAILY RECORDS FOR NOVEMBER 2010 None so far DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 9 HIGH 72 IN 1975 LOW 17 IN 1971 PRECIP 1.37 INCHES IN 1969 SNOWFALL 0.2 IN 1921,1923 PEAK GUST 73e S IN 1943 RECORDS FOR NOVEMBER 10 HIGH 75 IN 1931 LOW 20 IN 2004 PRECIP 2.11 INCHES IN 1888 SNOWFALL 2.2 IN 1987 PEAK GUST 83e S IN 1942 TODAY'S REPORT PREPARED BY: Sean Fankhauser