BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, OCTOBER 22, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME SUNNY AND VERY WARM OCTOBER WEATHER CONTINUES TODAY... Very sunny and warm conditions are occurring today with temperatures approaching the 80-degree mark. However, today's record of 85 degrees in 1979, will not be reached. The double-digit departures of the past five days, including today, will push the monthly average temperature up to 7 degrees warmer than normal. Despite the 0.79 inch of rain late Friday and early last Saturday, we still need a lot more rain to bring the month up to normal. Presently we're running close to one inch drier than normal. Today's observations: 7 A.M. Weather: Clear, cirrus north thru east thru south-southwest Temperature: 59F, Dew point: 46F, Wind: SSW at 13 kts Sea-level pressure: 30.20 inches Hg, steady Visibility: 60 miles, NW 70 miles 6-hour min temp: 58F 24-hour precipitation: BHO SA 1155 CLR 60 228/59/46/2013/020/ CI DSNT N-NE CI/PTCHS DENSE CI ENE-SE-SW FEW PTCHS DENSE SHLW GF DSSPTNG PST HR SW-W LGT HZ/K ALG HRZNS VSBY NW 70/ 8/002 51006 10060 20058 10 A.M. Weather: Clear few distant cirrus ESE-S-WSW Temperature: 70F, Dew point: 49F, Wind: SSW at 10 kts Sea-level pressure: 30.19 inches Hg, falling Visibility: 55 miles, light haze and smoke on horizons S-W-N-E BHO SA 1455 CLR 55 224/70/49/2110/019/ FEW CI/DENSE CI DSNT ESE-S-WSW LGT HK ALG HRZN S-W-N-E/ 8/002 58004 1 P.M. Weather: Scattered cirrus, dense cirrus S-W Temperature: 78F, Dew point: 48F, Wind: SSW at 11 kts Sea-level pressure: 30.15 inches Hg, falling Visibility: 60 miles, light haze, thin smoke NW-E BHO SA 1755 250 –SCT 60 209/78/48/2011/015/ CI ALQDS LWR DENS CI S-W LGT HZ THN K ALG HRZN NW-E/ 8/002 58015 10078 20059 WEATHER SUMMARY FOR SUNDAY, OCTOBER 21 TEMPERATURE (DEGREES F) MAX.....73 NORMAL.....58 MIN.....51 NORMAL.....41 MEAN....62 NORMAL.....50 DEPARTURE FROM 30-YEAR NORMAL.........+12 TOTAL DEPARTURE FOR THE MONTH........+138 [+6.4 DEGREES/DAY] PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............25 SSW AT 10:50 P.M. * AEROVANE.............25 SSW AT 10:50 P.M. * ASOS.................25 SSW AT 10:26 P.M. DAVIS................31 SW AT 9:59 P.M. FASTEST MILE FOR YESTERDAY..............21 SSW AT 10:35 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........20 SSW AT 10:36 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........23 SSW AT 9:26 P.M. AVERAGE WIND SPEED AND DIRECTION......14.0 SW ASOS...............13.5 DAVIS..............14.8 SW [220 deg] * last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE.....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.02 DEPARTURE.....-0.92 ASOS..............2.04 TOTAL PRECIPITATION FOR THE YEAR..........34.90 DEPARTURE.....-5.64 ASOS.............34.16 PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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 10/1 67/49/58/+1/0/592/84 18 S 10/2 72/50/61/+5/0/323/46 20 SSE 10/3 73/61/67/+11/0/077/11 23 SSE 10/4 84/65/75/+19/0/425/61 21 SSW 10/5 86/61/74/+19/0/618/89 21 SSW 10/6 83/62/73/+18/0/526/76 23 WSW 10/7 71/52/61/+7/0.01/110/16 29 NNE 10/8 58/52/55/+1/0.49/000/00 21 S 10/9 59/50/55/+1/0.10/580/85 29 NNW 10/10 57/50/54/0/0.09/000/00 20 ESE 10/11 58/55/57/+4/0.37/000/00 33 ENE TSTM late evening 10/12 62/42/52/-1/0.18/135/20 42 W Aero 43 MPH W 10/13 59/37/48/-4/0/665/99 25 WNW 10/14 59/42/51/-1/0/629/94 32 W 10/15 62/38/50/-2/0/426/64 29 WNW 10/16 61/43/52/+1/0/650/98 25 NW 10/17 68/41/55/+4/0/462/70 20 SW 10/18 75/57/66/+15/0/.../.. 21 S 10/19 70/63/67/+16/0.60/0/0 47 SSE Aero 51 MPH SSE 10/20 70/54/62/+12/0.19/.../.. 43 W Aero 44 MPH W 10/21 73/51/62/+12/0/643/99 25 SSW 10/22 morning low temp. 58F; normal low now 41F NEW DAILY RECORDS FOR OCTOBER 2007: 10/4 - RECORD HIGH TEMPERATURE 84F; PREVIOUS 83F IN 1898 and 1959. - EQUALED RECORD HIGH MINIMUM TEMPERATURE OF 65F; ALSO IN 1927. 10/5 - RECORD HIGH TEMPERATURE 86F; PREVIOUS 85F IN 1922 10/6 - EQUALED RECORD HIGH TEMPERATURE 83F; ALSO IN 1990. 10/19- EQUALED RECORD HIGH MINIMUM TEMPERATURE 63F; PREVIOUS IN 1928. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 22 HIGH 85 IN 1979 LOW 22 IN 1940 PRECIP 1.37 INCHES IN 1898 SNOWFALL TRACE IN 1969 PEAK GUST 67 MPH ESE IN 1988 RECORDS FOR OCTOBER 23 HIGH 82 IN 1947 LOW 24 IN 1969 PRECIP 2.18 INCHES IN 1956 SNOWFALL 3.0 INCHES IN 1891 PEAK GUST 78e MPH NW IN 1941 TODAY'S REPORT PREPARED By: Robert Skilling