BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, AUGUST 22, 2004 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] Today's observations: 8 A.M. EDT Weather: Clear Temperature: 56F, Dewpoint: 53F, Wind: NW at 10-kt, Visibility: 70 miles Sea-level pressure: 30.06R BHO SA 1155 CLR 70 181/56/53/3410/006/ FEW ACC NE-S THN K LYR ALNG HRZN SW-N/ 8/070 53025 MANUAL 70124 ASOS 70124 10060 20052 11 A.M. EDT Weather: Clear Temperature: 68F, Dew Point: 50F, Wind: NE at 10-kt Visibility: 70 miles Sea-level pressure: 30.08R BHO SA 1455 CLR 70 186/68/50/0410G16/008/ FEW CI NE-SE AND W FEW SC FRMG W-N WND VEERING/ 8/501 51005 2 P.M. EDT Weather: Clear Temperature: 68, Dew Point: 50, Wind: E at 10-kt Visibility: 70 miles Sea-level pressure: 30.07F BHO SA 1755 CLR 70 183/68/50/1010G14/007/ FEW SC SW-N AND SE FEW CI W-N AND E-S/ 8/501 58003 10070 20056 WEATHER SUMMARY FOR SATURDAY, AUGUST 21: TEMPERATURE (DEGREES F) MAX.....77 NORMAL.....78 ASOS.....77 AT 1:24 P.M. MIN.....59 NORMAL.....60 ASOS.....59 AT 11:59 P.M. MEAN....68 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL......-1 TOTAL DEPARTURE FOR THE MONTH.....-18 (-0.9 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........54 WSW AT 3:10 P.M.** AEROVANE.........55 WSW AT 3:10 P.M. ASOS.............52 WSW AT 3:16 P.M. DAVIS............48 WSW AT 3:10 P.M. FASTEST MILE FOR YESTERDAY..........42 WSW AT 3:10 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......38 WSW AT 3:11 P.M. AVERAGE WIND SPEED AND DIRECTION..14.6 S ASOS...........14.9 **NEW DAILY RECORD - DEFEATS OLD RECORD OF 51 MPH ESE IN 1997 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.24 DEPARTURE....+1.11 ASOS..............1.24 TOTAL PRECIPITATION FOR THE MONTH..........5.03 DEPARTURE....+2.33 ASOS..............4.93* TOTAL PRECIPITATION FOR THE YEAR..........32.76 DEPARTURE....+0.65 ASOS.............31.11* *New ASOS weighing gage installed 6/24/04 replaced former tipping gage. PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2004......CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 8/1 79/70/75/+3/0.03/165/19 32 MPH SSW AERO 35 MPH SSW 8/2 84/69/77/+5/0/544/63 21 MPH NE 8/3 86/69/78/+6/0/698/81 25 MPH SW AERO 29 MPH SW 8/4 79/65/72/0/0.06/679/79 24 MPH ENE 8/5 70/57/64/-8/0.49/231/27 21 MPH E 8/6 70/56/63/-9/0/419/49 24 MPH N 8/7 72/51/62/-9/0/495/58 17 MPH WNW 8/8 75/52/64/-7/0/774/91 31 MPH W 8/9 80/56/68/-3/0/848/100 25 MPH W 8/10 84/62/73/+2/0/719/85 31 MPH S 8/11 81/66/74/+3/0/177/21 35 MPH S AERO 36 MPH S 8/12 82/67/75/+4/0.62/530/63 33 MPH SSE 8/13 77/70/74/+3/0.78/008/01 30 MPH SSW 8/14 83/65/74/+4/0.02/576/69 21 MPH W 8/15 68/60/64/-6/1.55/000/00 28 MPH ENE 8/16 62/58/60/-10/0.18/000/00 18 MPH ENE 8/17 72/57/65/-5/0.04/356/43 18 MPH NNE 8/18 79/58/69/-1/0/685/83 30 MPH S AERO 33 MPH S 8/19 79/67/73/+3/T/.../.. 31 MPH S AERO 35 MPH S 8/20 86/68/77/+8/0.02/.../.. 31 MPH SSW 8/21 77/59/68/-1/1.24/.../.. 54 MPH WSW AERO 55 MPH WSW 8/22 MORNING LOW 52F MONTHLY RECORDS FOR AUGUST 2004: LOW MINIMUM: 51F ON 8/7 (OLD RECORD: 52F IN 1950,1964) PRECIPITATION: 1.55 INCHES ON 8/15 (OLD RECORD: 1.31 INCHES IN 1973) PEAK GUST: 54 MPH WSW ON 8/21 (OLD RECORD: 51 MPH ESE IN 1997) DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 22 HIGH 90F IN 1939 LOW 42F IN 1894 PRECIP 2.28 INCHES IN 1935 PEAK GUST 44 MPH SSW 1987 RECORDS FOR AUGUST 23 HIGH 88F IN 1918,1947,1949,1996 LOW 45F IN 1923 PRECIP 1.37 INCHES IN 1955 PEAK GUST 60e MPH NW IN 1940 TODAY'S REPORT BY: Andrew Hoell