BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, OCTOBER 1, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] SUNNY AND SEASONABLE WEATHER TODAY...SEPTEMBER 2005 IS 2ND WARMEST ON RECORD...AUGUST-SEPTEMBER COMBINED IS WARMEST ON RECORD... The temperature has warmed back to normal for early October today after a cool day on Friday, which had the lowest temperature of the season to date of 42. This caused the month of September to finish as the 2nd warmest on our 121-year record. This follows the 2nd warmest August, and the average for August and September combined is the warmest on record. Sunshine is not finalized for the month, but September will also be among the top five sunniest on record. September 2005 Summary Max temp...74.6 (+3.6) deg F Min temp...57.8 (+4.6) deg F Mean temp..66.2 (+4.1) deg F ...average corrected to 24-hours...65.5 (+4.1) Highest temp...88 (12th) Lowest temp...42 (30th) Precipitation...3.81 (-0.32) inches HDD...53 (-85) CDD...98 (+49) Mean wind...11.8 mph S Peak gust...62 mph S (29th) WARMEST SEPTEMBERS... 66.1 1961 65.5 2005* 65.4 1999 65.3 1930 65.0 2002 WARMEST AUGUST-SEPTEMBER COMBINED... 68.9 2005* 68.6 2002 67.8 1959 67.6 1961 67.5 1971, 2001 Today's observations: 7 A.M. EST Weather: Clear with a few cirrus and stratocumulus, thin ground fog Temperature: 52F, Dew point: 44F, Wind: S 12 mph Sea-level pressure: 30.34 inches, rising Visibility: 70 miles BHO SA 1155 CLR 70 275/52/44/1810/034/ FEW CI VCNTY STN CI DSNT SW-NW SC DSNT E-SE THN K LYR ALF SE-S K LYR ALG HRZN NW-NE THN GF E-SE/ 8/501 53020 10052 20049 10 A.M. EST Weather: Clear with a few distant cumulus and stratocumulus Temperature: 63F, Dew point: 48F, Wind: SSW 12 mph Sea-level pressure: 30.35 inches, rising Visibility: 60 miles BHO SA 1455 CLR 60 278/63/48/2010/035/ SC DSNT ESE-S FEW CU DSNT SW/ 8/500 50003 1 P.M. EST Weather: Clear with a few distant stratocumulus and cirrus Temperature: 68F, Dew point: 45F, Wind: S 10 mph Sea-level pressure: 30.33 inches, falling Visibility: 70 miles BHO SA 1755 CLR 70 271/68/45/1909/033/ SC DSNT ESE-SSE FEW CUFRA W FEW CI NW/ 8/501 56007 10069 20052 WEATHER SUMMARY FOR FRIDAY, SEPTEMBER 30 TEMPERATURE (DEGREES F) MAX.....60 NORMAL.....66 ASOS.....60 AT 1:01 PM MIN.....42 NORMAL.....48 ASOS.....42 AT 6:10 AM MEAN....51 NORMAL.....57 DEPARTURE FROM 30-YEAR NORMAL.......-6 TOTAL DEPARTURE FOR THE MONTH.....+123 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........18 W AT 1:49 A.M.* AEROVANE..........22 W AT 1:49 A.M.* ASOS..............17 W AT 1:33 A.M. DAVIS.............19 W AT 1:34 A.M. FASTEST MILE FOR YESTERDAY...........15 W AT 1:48 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE........15 SSW AT 10:14 P.M. AVERAGE WIND SPEED AND DIRECTION....8.8 W ASOS.............8.6 *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..........3.81 DEPARTURE....-0.32 ASOS..............3.82 TOTAL PRECIPITATION FOR THE YEAR..........42.90 DEPARTURE....+5.45 ASOS.............41.67* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 9/1 81/73/73/+6/0.41/773/98 28 WNW 9/2 83/62/73/+7/0/786/100 23 WSW 9/3 78/61/70/+4/0/782/100 25 WNW 9/4 78/60/69/+3/0/725/93 21 NE 9/5 70/57/64/-1/0/770/99 24 NNE 9/6 74/56/65/0/775/100 16 S 9/7 81/57/69/+4/0/742/96 21 S 9/8 83/59/71/+6/0/670/87 20 SSW 9/9 70/60/65/+1/0/276/36 21 NW 9/10 71/53/62/-2/0/756/99 21 NNW 9/11 73/49/61/-3/0/709/93 28 SSW 9/12 88/60/74/+11/0/691/91 29 SW 9/13 81/66/74/+11/0/688/91 23 SSE 9/14 85/65/75/+12/0/550/73 27 S 9/15 72/66/69/+7/2.43/0/0 23 WNW 9/16 68/62/65/+3/0.13/0/0 24 NNE 9/17 67/61/64/+2/0.06/0/0 23 ENE 9/18 74/60/67/+6/0/186/25 17 W 9/19 79/57/68/+7/0/680/92 17 W 9/20 73/62/68/+7/0.05/15/2 35 W 9/21 77/58/68/+8/0/711/97 28 W 9/22 82/62/72/+12/0/708/97 35 SSW 9/23 78/56/67/+7/T/145/20 30 S 9/24 63/49/56/-3/0/667/92 23 N 9/25 65/50/58/-1/0/296/41 29 S 9/26 72/61/67/+8/0.38/007/01 39 S Aero 45 MPH S 9/27 69/52/61/+3/T/695/97 35 NW Aero 40 MPH NW 9/28 70/50/60/+2/0/.../.. 28 SSE 9/29 73/46/60/+2/0.35/.../.. 62 S Aero 72 MPH S 9/30 60/42/51/-6/0/.../.. 18 W DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 1 HIGH 85F IN 1927 LOW 30F IN 1992 PRECIP 1.44 INCHES IN 1984 PEAK GUST 68e MPH SSE IN 1977 RECORDS FOR OCTOBER 2 HIGH 85F IN 1968 LOW 29F IN 1899 PRECIP 1.75 INCHES IN 1984 PEAK GUST 52e MPH S IN 1952, 52 NNW IN1984 TODAY'S REPORT BY: Mike Iacono