BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA ALL TIMES EASTERN DAYLIGHT TIME THURSDAY SEPTEMBER 22, 2005 TODAY'S DISCUSSION....2 P.M. Another very warm September day with the temperatures in the lower 80's early this afternoon. South winds are on the increase gusting to 25 MPH while the air continue quite dry with dewpoint temperatures in the mid-50's. TODAY'S OBSERVATIONS.... 8 A.M. high thin scattered with 55 miles visibility; temp. 68; dewpoint 52; wind sw at 12 mph; six hourly min temp. 62 deg. BHO SA 1145 300 -SCT 55 199/68/52/2310/012/ LWR CI DSNT NW-NE WND GRDLY BACKING/ 8/001 53003 10068 20062 11 A.M. clear with some thin cirrus; visibility 50 miles and light haze; temp. 79; dewpoint 58; wind ssw at 09 mph BHO SA 1455 CLR 50 195/79/58/2008/011/ CI ALQDS LGT HZ/ 8/001 56004 2 P.M. high thin scattered clouds with 60 miles visibility but 70 miles nw; temp. 81; dewpoint 54; rh 39%; wind s at 15 gusting 22 mph; six hourly max. temp. 82 deg. BHO SA 1755 300 -SCT 60 174/81/54/1913G19/004/ FEW CU LWR CI NW-E VSBY NW 70/ 8/101 58021 10082 20068 WEATHER SUMMARY FOR WEDNESDAY SEPT 21: TEMPERATURE (DEGREES F) MAX......77 NORMAL.....69 HAZEN 76.9 AT 2:38 P.M. MIN......58 NORMAL.....51 HAZEN 58.0 AT 6:46 A.M. MEAN.....68 NORMAL.....60 DEPARTURE FROM 30-YEAR NORMAL.....+ 8 TOTAL DEPARTURE FOR THE MONTH.....+ 99 [4.5 deg. daily ] PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY......... 28 W AT 2:13 A.M. * AEROVANE.............................. 32 W AT 1:16 A.M. ASOS...................................... 26 W AT 2:13 A.M. DAVIS.......................................30 W AT 1:52 A.M. FASTEST MILE FOR YESTERDAY.................. 23 W AT 2:55 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE............ 22 W AT 2:55 A.M. MAXIMUM 1-MINUTE DAVIS AVERAGE............23 W AT 1:16 A.M. AVERAGE WIND SPEED AND DIRECTION... .... 13.8 W ASOS............................................................. 13.5 W [260 deg] DAVIS............................................................. 14.2 W [260 deg] There are several corrections to ASOS precipitation data below... Now that our direct connection to the ASOS CPU was restored this morning... PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.00 DEPARTURE.....-0.14 ASOS.............. 0.00 TOTAL PRECIPITATION FOR SEPT...............3.08 DEPARTURE....+0.21 ASOS...............3.08 TOTAL PRECIPITATION FOR THE YEAR........**42.17 DEPARTURE....+5.98 ASOS..............40.93 ** corrected total...from 32.12 in yesterday's report! .. 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 81/64/73/+6/0.41/773/98 28 WNW [min. temp. corrected from 73] 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/+7/2.43/000/00 23 WNW TSTM 9/16 68/62/65/+3/0.13/000/00 24 NNE 9/17 67/61/64/+2/0.06/000/00 22 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/+7/0.05/015/02 35 W TSTM Aero 38 MPH W 9/21 77/58/68/+8/0/.../.. 9/22 morning low temp. 62 deg; normal 51 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 22 HIGH 90F IN 1895, 1914 LOW 30F IN 1904 (Earliest freeze) PRECIP 1.16 INCHES IN 2001 PEAK GUST 60 MPH SSW IN 1989 RECORDS FOR SEPTEMBER 23 HIGH 93F IN 1895,1914 LOW 33F IN 1904 PRECIP 2.67 INCHES IN 1994 PEAK GUST 62 MPH SSW IN 1989 TODAY'S REPORT BY: Robert Skilling