BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, NOVEMBER 12, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME BRIGHT SUNSHINE AND COOL TODAY...COLDEST TEMPERATURE OF THE SEASON SO FAR THIS MORNING...FRIDAY THE FIRST DAY IN NOVEMBER TO AVERAGE COLDER THAN NORMAL...NOVEMBER STILL AVERAGING FIVE DEGREES WARMER THAN NORMAL... The low temperature this morning of 26 (deg F) is the coldest of the season to date, but this is well above the record low of 18 set in 1926. The mean temperature on Friday of 35 was eight degrees colder than the average for the date, ending a streak of twelve straight days above normal. The sky has been nearly completely free of clouds today, with high visibility of 75-80 miles. Today's observations: 7 A.M. Weather: Clear, few stratocumulus distant offshore Temperature: 28F, Dew point: 22F, Wind: WNW 11 mph Sea-level pressure: 30.23 inches, rising Visibility: 75 miles BHO SA 1155 CLR 75 236/28/22/2910/023/ FEW SC DSNT E-SE OFFSHR/ 8/500 53017 10028 20026 10 A.M. Weather: Clear Temperature: 40F, Dew point: 23F, Wind: WNW 8 mph Sea-level pressure: 30.27 inches, rising Visibility: 75 miles BHO SA 1455 CLR 75 250/40/23/2907/027/ WND LGT/ 51017 1 P.M. Weather: Clear, few altocumulus distant WSW-NW Temperature: 48F, Dew point: 14F, Wind: NW 7 mph Sea-level pressure: 30.24 inches, falling Visibility: 80 miles BHO SA 1755 CLR 80 240/48/14/3106/024/ FEW AC DSNT WSW-NW WND LGT AND VRB/ 8/030 57010 10048 20028 WEATHER SUMMARY FOR FRIDAY, NOVEMBER 11 TEMPERATURE (DEGREES F) MAX.....41 NORMAL.....51 ASOS.....41 AT 1:39 PM MIN.....29 NORMAL.....36 ASOS.....28 AT MIDNIGHT PM MEAN....35 NORMAL.....43 DEPARTURE FROM 30-YEAR NORMAL.......-8 TOTAL DEPARTURE FOR THE MONTH......+59 (+5.2 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........30 DEPARTURE.....+8 TOTAL HEATING UNITS FOR THE MONTH.........161 DEPARTURE....-60 TOTAL HEATING UNITS FOR THE SEASON........622 DEPARTURE...-190 TOTAL HEATING UNITS LAST SEASON TO DATE...767 DIFFERENCE..-145 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........29 W AT 10:04 A.M.* AEROVANE..........32 W AT 10:04 A.M. ASOS..............29 W AT 10:04 A.M. DAVIS.............30 W AT 10:01 A.M. FASTEST MILE FOR YESTERDAY...........23 W AT 10:33 A.M.* MAXIMUM 2-MINUTE ASOS AVERAGE........22 W AT 10:34 A.M. AVERAGE WIND SPEED AND DIRECTION...13.6 W ASOS............13.2 *LAST OF SEVERAL OCCURRENCES PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.16 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.92 DEPARTURE....-0.76 ASOS..............0.93 TOTAL PRECIPITATION FOR THE YEAR..........58.54 DEPARTURE...+14.99 ASOS.............57.48* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. 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....-0.8 TOTAL SNOWFALL FOR THE SEASON...............1.5 DEPARTURE....+0.5 (CORRECTED) PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2005......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 11/1 70/48/59/+12/0/0/446/72 39 MPH S Aero 40 MPH S 11/2 56/39/48/+2/T/0/543/88 37 MPH WNW Aero 39 MPH WNW 11/3 62/36/49/+3/0/0/449/73 50 MPH S Aero 52 MPH S 11/4 69/46/58/+12/0/0/.../.. 29 MPH SSE Aero 30 MPH SSE 11/5 71/47/59/+14/0/0/268/44 18 MPH S 11/6 57/49/53/+8/0.25/0/000/00 31 MPH SSW Aero 36 MPH SSW TSTM 11/7 57/45/51/+6/0.01/0/430/71 47 MPH W Aero 48 MPH W 11/8 60/42/51/+7/0/0/265/44 35 MPH W Aero 36 MPH W 11/9 57/34/46/+2/0.20/0/258/43 36 MPH SSE Aero 41 MPH SSE 11/10 58/32/45/+1/0.46/0/.../.. 37 MPH W Aero 44 MPH W 11/11 41/29/35/-8/0/0/.../.. 29 MPH W 11/12 ..overnight low 26 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 12 HIGH 74 IN 1909 LOW 18 IN 1926 PRECIP 3.25 INCHES IN 1947 SNOWFALL 8.1 INCHES IN 1987 PEAK GUST 79e MPH NW IN 1947 RECORDS FOR NOVEMBER 13 HIGH 66 IN 1931, 1964 LOW 14 IN 1920 PRECIP 1.96 IN 1982 SNOWFALL 4.6 IN 2004 PEAK GUST 77 S IN 1982 TODAY'S REPORT BY: Mike Iacono