BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, NOVEMBER 9, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME COLDER THAN NORMAL TEMPERATURES CONTINUE.... Temperatures reached a low of 32 degrees early this morning as compared to 28 degrees 24 hours ago, our coldest of the season to date. Boston's Logan Airport recorded its first freeze of the season this morning at 32 degrees. The average date for their first one is November 2nd. Here at Blue Hill our first 32-degree reading came on October 30th with 30 degrees. The past three mornings have all had low temperatures in the sub-freezing range. Today was our third consecutive day with temperatures averaging well below the daily normal. Today's observations: 7 A.M. Weather: Overcast middle and high clouds, altocumulus and cirrostratus Temperature: 33F, Dew point: 25F, Wind: N at 7 kts Sea-level pressure: 30.23 inches Hg, rising Visibility: 20 miles, 55 miles above inversion WNW 6-hour min temp: 32F BHO SA 1155 E100 BKN 220 OVC 20 237/33/25/3507/023/ FEW SC MDT CUFRM TOPS DSNT OFFSHR NE-E THN SPTS AND FEW SML BINOVC PTCHY THN F BLO SMT/INVSN SE-W VSBY WNW 55 ABV INVSN/ 8/577 53006 10033 20032 10 A.M. Weather: Scattered altocumulus, thin overcast cirrostratus Temperature: 38F, Dew point: 25F, Wind: NNE at 4 kts Sea-level pressure: 30.24 inches Hg, rising Visibility: 20 miles, thin smoke and hazy along horizons BHO SA 1455 100 SCT 250 -OVC 20 240/38/25/0304/024/ FEW SC DSNT E AND FEW CU DSNT ESE-SE THN K ALG HRZNS HAZY/ 8/837 50003 1 P.M. Weather: High thin overcast cirrus, cirrostratus Few cumulus and moderate cumulus E-S Temperature: 43F, Dew point: 25F, Wind: N at 6 kts Sea-level pressure: 30.17 inches Hg, falling Visibility: 30 miles, WNW 45 miles 6-hourly max. temp: 44F BHO SA 1755 220 SCT 250 –SCT 300 –OVC 30 216/43/25/3606/017/ FEW CU ALQDS LINE MDT CU E-S AC/FEW ACSL W-N VSBY WNW 45 LGT HZ WND LGT/ 8/247 56020 10044 20033 WEATHER SUMMARY FOR THURSDAY, NOVEMBER 8 TEMPERATURE (DEGREES F) MAX.....43 NORMAL.....52 MIN.....28 NORMAL.....37 MEAN....36 NORMAL.....44 DEPARTURE FROM 30-YEAR NORMAL...........-8 TOTAL DEPARTURE FOR THE MONTH...........-7 [-0.7 DEGREES/DAY] PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............22 W AT 12:54 P.M. * AEROVANE.............22 WNW AT 10:07 A.M. ASOS.................21 WNW AT 10:08 A.M. DAVIS................21 NW AT 10:07 A.M. FASTEST MILE FOR YESTERDAY..............14 W AT 12:57 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE...........14 W AT 12:57 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........17 WNW AT 10:07 A.M. AVERAGE WIND SPEED AND DIRECTION...... 8.1 WNW ASOS................8.2 DAVIS...............8.4 WNW [300 deg] * 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..........1.70 DEPARTURE.....+0.50 ASOS..............1.71 TOTAL PRECIPITATION FOR THE YEAR..........37.24 DEPARTURE.....-5.98 ASOS.............36.54 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2007...CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 11/1 66/42/54/+7/0/050/08 37 S 11/2 50/37/44/-2/0/446/73 29 NE 11/3 46/40/43/-3/0.95/000/00 51 N Aero 50 MPH NNW 11/4 54/37/46/0/0/503/82 33 W Aero 33 MPH W 11/5 56/40/48/+3/0/483/79 29 SE Aero 29 MPH SE 11/6 53/37/45/0/0.75/000/00 35 SSE Aero 35 MPH SSE 11/7 50/32/41/-4/0/.../.. 30 W Aero 28 MPH W 11/8 43/28/36/-8/0/.../.. 22 W 11/9 morning low temp. 32F; normal low temp. now 36F NEW DAILY RECORDS FOR NOVEMBER 2007: None to date. 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: Robert Skilling