BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, SEPTEMBER 18, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 7 A.M. EST Weather: Obscured with heavy fog Temperature: 63F, Dew point: 63F, Wind: W at 8 kt Sea-level pressure: 29.95 inches Hg, rising Visibility: 1/4 of a mile BHO SA 1155 W2 X1 1/4F 143/63/63/2608/995/ DISC OF SUN VSBL/ 8//// 53009 70002 10063 20061 10 A.M. EST Weather: Overcast stratocumulus with breaks Temperature: 69F, Dew point: 63F, Wind: W at 8 kt Sea-level pressure: 29.96 inches Hg, rising Visibility: 65 miles BHO SA 1455 15 OVC 65 146/69/63/2808/996/ FEW BINOVC ALQDS/ 8/4// 52003 WEATHER SUMMARY FOR SATURDAY, SEPTEMBER 17 TEMPERATURE (DEGREES F) MAX.....67 NORMAL.....71 ASOS.....67 AT N/A MIN.....61 NORMAL.....53 ASOS.....61 AT N/A MEAN....64 NORMAL.....62 DEPARTURE FROM 30-YEAR NORMAL......+2 TOTAL DEPARTURE FOR THE MONTH.....+71 (+4.2 DEGREE/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........22 ENE AT 7:12 P.M. AEROVANE..........24 ENE AT 7:08 P.M. ASOS..............N/A DAVIS.............20 NNW AT 7:00 A.M. FASTEST MILE FOR YESTERDAY...........17 ENE AT 7:12 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......N/A AVERAGE WIND SPEED AND DIRECTION....7.5 NW ASOS.............N/A PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.02 DEPARTURE....-0.12 ASOS..............0.01 TOTAL PRECIPITATION FOR THE MONTH..........3.04 DEPARTURE....+0.73 ASOS..............3.04 TOTAL PRECIPITATION FOR THE YEAR..........42.13 DEPARTURE....+6.50 ASOS...............N/A* *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/.../.../.. 23 WNW 9/16 68/62/65/+3/.../.../.. 24 NNE 9/17 67/61/64/+2/.../.../.. 22 ENE DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 18 HIGH 88F IN 1906 LOW 36F IN 1919 PRECIP 4.25 INCHES IN 1996 PEAK GUST 77e MPH WNW IN 1948 RECORDS FOR SEPTEMBER 19 HIGH 87F IN 1906,1983 LOW 37F IN 1929 PRECIP 3.69 INCHES IN 1936 PEAK GUST 48 MPH NE IN 1972 TODAY'S REPORT BY: Andrew Hoell