BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, OCTOBER 4, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED MOSTLY SUNNY AND COOL TODAY... The low temperature this morning of 40 is the lowest of the season so far. Cumulus are filling the sky as of mid-afternoon after a clear sky early this morning. Visibility has been high near 75 miles all day. NINTH ANNUAL SOUTHERN NEW ENGLAND WEATHER CONFERENCE TO BE HELD SATURDAY, OCT 25... Registration is now open for the Southern New England Weather Conference being held at the Clay Center in Brookline on October 25th. To see the agenda or to register go to www.sneweatherconf.org. Today's observations: 8 A.M. EDT Weather: Clear, few distant cirrus and altocumulus Temperature: 43F, Dew point: 38F, Wind: SW at 10 kts Sea-level pressure: 30.15 inches Hg, rising Visibility: 75 miles 6-hourly minimum temperature: 40F 24-hourly rainfall: trace BHO SA 1155 CLR 75 210/43/38/2310/015/ FEW CI DSNT S-SSW FEW AC DSNT W-WNW/ 8/031 53020 10044 20040 11 A.M. EDT Weather: Clear, few cirrus and cumulus Temperature: 54F, Dew point: 39F, Wind: W at 14G23 kts Wind: Gust to 27 kts from W at 10:26 A.M. EDT Sea-level pressure: 30.17 inches Hg, rising Visibility: 75 miles BHO SA 1455 CLR 75 217/54/39/2714G23/017/ FEW CI FEW CU ALQDS PK WND 2727/26/ 8/101 51007 2 P.M. EDT Weather: Scattered cumulus Temperature: 59F, Dew point: 41F, Wind: W at 15G23 kts Wind: Gust to 26 kts from WSW at 1:30 P.M. EDT Wind: Direction variable WSW-WNW Sea-level pressure: 30.19 inches Hg, rising Visibility: 75 miles 6-hourly max. temp. 59F BHO SA 1755 45 SCT 75 225/59/41/2715G23/019/ PK WND 2526/30 WND 24V30/ 8/100 58008 10059 20043 WEATHER SUMMARY FOR FRIDAY, OCTOBER 3 TEMPERATURE (DEGREES F) MAX.....62 NORMAL.....65 MIN.....45 NORMAL.....47 MEAN....54 NORMAL.....56 DEPARTURE FROM 30-YEAR NORMAL.............-2 TOTAL DEPARTURE FOR THE MONTH.............+2 (+0.5 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............44 SSW AT 10:40 A.M. AEROVANE.............43 SSW AT 10:40 A.M. * ASOS.................43 SW AT 10:40 A.M. DAVIS................51 SSW AT 10:39 A.M. FASTEST MILE FOR YESTERDAY..............30 SSW AT 10:39 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........31 SW AT 10:41 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........35 SSW AT 10:41 A.M. AVERAGE............16.4 SSW ASOS...............15.9 DAVIS..............16.2 SW [222 deg] * Last of several occurrances... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...trace DEPARTURE.......-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.60 DEPARTURE.......+0.18 ASOS..............0.61 TOTAL PRECIPITATION FOR THE YEAR..........43.50 DEPARTURE.......+5.48 ASOS.............46.09 # # Includes erroneous ASOS precipitation data on 2/13/08. PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2008 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system gust when significant TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 10/1 68/58/63/+6/.../.../.. 38 SW TSTM # 10/2 62/46/54/-2/.../.../.. 45 W 10/3 62/45/54/-2/T/.../.. 44 SSW Aero 43 MPH SSW 10/4 morning low temp: 40F; our normal low is now 47F # Thunderstorm gust NEW DAILY RECORDS FOR OCTOBER None... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 4 HIGH 84F IN 2007 LOW 28F IN 1888 PRECIP 1.07 INCHES IN 1986 PEAK GUST 59 MPH SSW IN 1990 RECORDS FOR OCTOBER 5 HIGH 86F IN 2007 LOW 29F IN 1965 PRECIP 3.17 INCHES IN 1962 PEAK GUST 64e MPH S IN 1979 TODAY'S REPORT PREPARED By: Mike Iacono