BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, SEPTEMBER 24, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 7 A.M. EST Weather: Thin broken cirrus Temperature: 53F, Dew point: 43F, Wind: N at 11 kt Sea-level pressure: 30.34 inches Hg, rising Visibility: 90 miles BHO SA 1155 200 -BKN 90 276/53/43/0111/034/ CLR DSNT NW-NE FEW ACC S/ 8/001 51020 70000 10055 20050 10 A.M. EST Weather: Thin scattered cirrus Temperature: 60F, Dew point: 45F, Wind: NE at 8 kt Sea-level pressure: 30.39 inches Hg, rising Visibility: 80 miles BHO SA 1455 200 -SCT 80 290/60/45/0308/039/ CLR DSNT NW-NE/ 8/001 50014 WEATHER SUMMARY FOR FRIDAY, SEPTEMBER 23 TEMPERATURE (DEGREES F) MAX.....78 NORMAL.....69 ASOS.....82 AT 1:30 P.M. MIN.....56 NORMAL.....51 ASOS.....61 AT 1:08 A.M. MEAN....67 NORMAL.....60 DEPARTURE FROM 30-YEAR NORMAL......+7 TOTAL DEPARTURE FOR THE MONTH....+118 (+5.1 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........30 S AT 2:56 A.M. AEROVANE..........24 S AT 3:02 A.M. ASOS..............30 S AT 2:57 A.M. DAVIS.............34 S FASTEST MILE FOR YESTERDAY...........26 S AT 2:55 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE........24 S AT 3:12 A.M. AVERAGE WIND SPEED AND DIRECTION...14.0 NW ASOS............14.2 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..........3.08 DEPARTURE....-0.07 ASOS..............3.08 TOTAL PRECIPITATION FOR THE YEAR..........42.17 DEPARTURE....+5.70 ASOS.............40.93* *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/.../.. 28 W 9/22 82/62/72/+12/0/.../.. 35 SSW 9/23 78/56/67/+7/T/.../.. 30 S DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 24 HIGH 87F IN 1959 LOW 33F IN 1885,1950,1963 PRECIP 1.19 INCHES IN 1955 PEAK GUST 54e MPH SW IN 1940 RECORDS FOR SEPTEMBER 25 HIGH 87F IN 1970 LOW 31F IN 1950 PRECIP 2.68 INCHES IN 1961 PEAK GUST 63 MPH SSW IN 1991 TODAY'S REPORT BY: Andrew Hoell