BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, JULY 24, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 7 A.M. EST Weather: Clear with a thin smoke layer to the northwest Temperature: 66F, Dew point: 53F, Wind: NW at 13 kt Sea-level pressure: 30.05 inches Hg, rising Visibility: 50 miles BHO SA 1155 CLR 50 177/66/53/3113/005/ THN K LYR ALNG HRZN NW/ 8/000 53008 10066 20060 10 A.M. EST Weather: Clear with a few cirrus Temperature: 73F, Dew point: 49F, Wind: WNW at 15 kt Sea-level pressure: 30.05 inches Hg, steady Visibility: 80 miles BHO SA 1455 CLR 80 178/73/49/3115/005/ FEW CI DSNT SW-W/ 8/001 50001 WEATHER SUMMARY FOR SATURDAY, JULY 23 TEMPERATURE (DEGREES F) MAX.....82 NORMAL.....82 ASOS.....82 AT 2:27 P.M. MIN.....64 NORMAL.....63 ASOS.....64 AT MIDNIGHT P.M. MEAN....73 NORMAL.....72 DEPARTURE FROM 30-YEAR NORMAL.......1 TOTAL DEPARTURE FOR THE MONTH......+8 (+0.3 DEGREE/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........28 WNW AT 4:52 P.M. AEROVANE..........31 WNW AT 4:52 P.M. ASOS..............21 WNW AT 2:32 P.M. FASTEST MILE FOR YESTERDAY...........24 WNW AT 4:23 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........21 WNW AT 4:24 P.M. AVERAGE WIND SPEED AND DIRECTION...11.6 NW ASOS............12.6 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.72 DEPARTURE....-0.06 ASOS..............2.72 TOTAL PRECIPITATION FOR THE YEAR..........33.53 DEPARTURE....+5.23 ASOS.............32.40* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. PRELIMINARY CLIMATE SUMMARY FOR JULY 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 7/1 75/60/68/-2/0.02/110/12 20 SSW (MPH) 7/2 80/62/71/+1/0/776/85 24 W 7/3 77/59/68/-2/0/885/97 18 ENE 7/4 81/58/70/0/0/701/77 22 SSE 7/5 86/60/73/+2/0/783/86 27 S 7/6 71/57/64/-7/1.43/000/00 35 NNE Aero 38 MPH NNE 7/7 62/56/59/-12/T/000/00 30 NE 7/8 59/53/56/-15/.../000/00 39 NNE 7/9 76/54/65/-6/.../335/37 35 W 7/10 86/62/74/+3/0/787/77 32 WNW 7/11 88/66/77/+5/0/822/91 30 NW 7/12 76/60/68/-4/0/849/94 21 NE 7/13 77/59/68/-4/0/649/72 27 S 7/14 84/64/74/+2/0/0/648/72 27 SW 7/15 82/67/75/+3/0/681/76 21 NE 7/16 86/66/76/+4/0/600/67 25 S 7/17 82/67/75/+3/0/0/072/08 27 SSE 7/18 83/72/78/+6/0.15/142/16 23 S 7/19 91/72*/82/+10/0.01/508/57 25 W TSTM 7/20 88/70/79/+7/0/863/97 23 W 7/21 86/68/77/+5/0/.../.. 17 WNW 7/22 91/69/80/+8/T/.../.. 28 NNW AERO 31 MPH NNW TSTM 7/23 82/64/73/+1/0/.../.. 28 WNW AERO 31 MPH 7/24 OVERNIGHT LOW 60 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JULY 24 HIGH 96F IN 1987 LOW 49F IN 1893,1912 PRECIP 2.21 INCHES IN 1988 PEAK GUST 41 MPH S IN 1975, 41e MPH WSW 1977 RECORDS FOR JULY 25 HIGH 94F IN 1963,1987 LOW 51F IN 1901,1953 PRECIP 2.25 INCHES IN 1990 PEAK GUST 88 MPH NW IN 1972 TODAY'S REPORT BY: Andrew Hoell