BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, NOVEMBER 15, 2009 ALL DATA IN EASTERN STANDARD TIME MID-NOVEMBER NOR'EASTER BRINGS OVER 2 INCHES OF RAINFALL BREAKING THE DAILY RAINFALL RECORD FOR NOVEMBER 14TH PEAK WIND GUSTS REACHED NEAR 40 MPH The mid-November nor'easter which began with overcast, windy but dry conditions on November 13th, became soaking wet and continued windy early on the 14th. The record daily rainfall total for the day, the calendar date of November 14th, of 1.87 inches set in 1972 was broken. The exact amount has yet to be calculated but it will be around 2.08 inches. The rain came down heaviest during the three hours ending at 10 a.m. A total of 0.90 inch fell during that period. Rain changed to mostly drizzle later in the day. The storm total through 7 a.m. today is 2.13 ins. after some more light drizzle and light rain shower during the early hours. Peak wind gusts reached 39 MPH from the NNE on November 13 and 39 MPH from the NE early on November 14 before veering to the east and diminishing during the afternoon. Temperatures rose through the 50's to a maximum of 59F just before 7 p.m.; that was unusually mild for a November noreaster. Today's observations: 7 A.M. Weather: Sky obscured by fog, light drizzle ended during the hour Temperature: 52F, Dew point: 52F, Wind: NNW at 7 kts, Sea-level pressure: 29.90 inches Hg, rising Visibility: 1/16 mile 6-hour minimum temp: 52F 24-hour precipitation: 1.82 inches BHO SA 1155 W2 X 1/16F 125/52/52/3407/990/ LEUKN/ 8//// 53007 ASOS 60005 ASOS 70188 MANUAL 70182 10054 20052 10 A.M. Weather: Sky obscured by fog, light drizzle ended at 9:50 a.m., sky brightening, sun occasionally dimly visible Temperature: 54F, Dew point: 54F, Wind: NW at 6 kts, Sea-level pressure: 29.91 inches Hg, steady Visibility: 1/16 mile, dense fog 3-hourly precipitation: 0.01 inch BHO SA 1455 W2 X 1/16F 130/54/54/3206/991/ SKY BRGHTNG SUN OCNL DMLY VSB LE50/ 8//// 51005 MANUAL 6001/ WEATHER SUMMARY FOR SATURDAY, NOVEMBER 14 TEMPERATURE (DEGREES F) MAX.....59 NORMAL.....50 MIN.....49 NORMAL.....35 MEAN....54 NORMAL.....42 DEPARTURE FROM 30-YEAR AVERAGE............+12 TOTAL DEPARTURE FOR THE MONTH.............+44 [+2.9 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............11 DEPARTURE.......-12 TOTAL HEATING UNITS FOR THE MONTH...........243 DEPARTURE.......-45 TOTAL HEATING UNITS FOR THE SEASON..........864 DEPARTURE.......-15 TOTAL HEATING UNITS LAST SEASON TO DATE.....777 DIFFERENCE......+87 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.............39 NE AT 7:15 A.M. AEROVANE..............38 NE AT 7:15 A.M. ASOS..................39 NE AT 7:16 A.M. DAVIS.................40 ENE AT 7:16 A.M. FASTEST MILE FOR YESTERDAY...............26 NE AT 7:35 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE............28 NE AT 7:36 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE...........28 NE AT 7:36 A.M. AVERAGE WIND SPEED AND DIRECTION.......15.2 NE ASOS................14.4 DAVIS...............14.5 ENE [055 DEG] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.82 DEPARTURE....+1.66 ASOS..............1.88 TOTAL PRECIPITATION FOR MONTH ............2.19 DEPARTURE....+0.03 ASOS..............2.23 TOTAL PRECIPITATION FOR THE YEAR..........47.30 DEPARTURE....+3.12 ASOS.............48.54 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE.....-1.1 TOTAL SNOWFALL FOR THE SEASON...............3.0 DEPARTURE.....+1.7 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2009 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 58/44/51/+4/0.05/167/27 22 WNW 11/2 49/42/46/0/T/099/16 29 NE 11/3 57/36/47/+1/0/474/77 32 W AERO 32 MPH W 11/4 49/34/42/-4/0/514/84 24 W 11/5 46/36/41/-4/0.01/006/01 21 N 11/6 47/31/39/-6/0/419/69 38 WNW AERO 38 MPH WNW 11/7 49/29/39/-6/0/575/95 33 S 11/8 66/42/54/+10/0/549/91 31 SSW 11/9 68/49/59/+15/0/486/81 35 S AERO 35 MPH S 11/10 62/50/56/+12/0/000/00 23 SW 11/11 50/43/47/+4/0/113/19 31 NNE 11/12 49/41/45/+2/0/.../.. 34 NE AERO 31 MPH NNE 11/13 49/44/47/+4/0/000/00 39 NNE AERO 37 MPH NNE 11/14 59/49/54/+12/2.08*/000/00 39 NE AERO 38 MPH NE 11/15 our low temperature for this morning was 52F; normal is 35F NEW DAILY RECORD FOR NOVEMBER 2009 A new daily rainfall record is set for November 14 at about 2.08 inches; the previous record was 1.87 inches in 1972. * * the exact new record amount yet to be calculated DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 15 HIGH 74 IN 1993 LOW 15 IN 1933 PRECIP 1.66 INCHES IN 1981 SNOWFALL 4.0 IN 1967 PEAK GUST 65 SSE IN 2008 RECORDS FOR NOVEMBER 16 HIGH 73 IN 1927 LOW 8 IN 1933 PRECIP 2.25 INCHES IN 1981 SNOWFALL 2.0 IN 1913 PEAK GUST 78 S IN 1989 TODAY'S REPORT PREPARED BY: Robert Skilling