BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, AUGUST 7, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED Today's observations: 8 A.M. EDT Weather: Overcast stratus, stratus fractus drifting over/below summit Temperature: 63F, Dew point: 63F, Wind: S at 4 kts Sea-level pressure: 29.80 inches Hg, rising Visibility: 3 miles, fog 6-hourly minimum temperature: 61F 24-hourly rainfall: 0.28 inch BHO SA 1155 E5 OVC 3F 093/63/63/1904/980/ CIG RGD STFRA DRFTG OVR/BLO SMT/ 8/6// 53007 MANUAL 70028 ASOS 70029 10063 20061 11 A.M. EDT Weather: Low overcast stratus Temperature: 65F, Dew point: 64F, Wind: SE at 6 kts Sea-level pressure: 29.82 inches Hg, rising Visibility: 5 miles, fog 3-hourly rainfall: Trace BHO SA 1455 E5 OVC 5F 098/65/64/1406/982/ 8/6// 53005 MANUAL 6000/ 2 P.M. EDT Weather: Scattered stratus fractus, overcast stratus Temperature: 72F, Dew point: 65F, Wind: SSE at 6 kts Sea-level pressure: 29.78 inches Hg, falling Visibility: 8 miles, hazy 6-hour max. temp. 72F 6-hourly rainfall: Trace BHO SA 1755 1606 15 SCT E35 OVC 8 084/72/65/1606/978/ HAZY/ 8/6// 58014 MANUAL 6000/ 10072 20063 WEATHER SUMMARY FOR WEDNESDAY, AUGUST 6 TEMPERATURE (DEGREES F) MAX.....64 NORMAL.....81 MIN.....60 NORMAL.....62 MEAN....62 NORMAL.....72 DEPARTURE FROM 30-YEAR NORMAL............-10 TOTAL DEPARTURE FOR THE MONTH............-12 [-2.2 DEGREES/DAY] PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............31 ESE AT 10:16 A.M. AEROVANE.............31 ESE AT 10:16 A.M. ASOS.................28 SSE AT 10:16 A.M. DAVIS................31 ESE AT 10:15 A.M. FASTEST MILE FOR YESTERDAY..............23 ESE AT 10:16 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........20 SSE AT 10:17 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........24 ESE AT 9:33 A.M. AVERAGE............ 10.0 SE ASOS................8.7 DAVIS.............. 10.4 SE [127 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.28 DEPARTURE......+0.15 ASOS..............0.29 TOTAL PRECIPITATION FOR THE MONTH..........1.92 DEPARTURE......+1.17 ASOS..............1.98 TOTAL PRECIPITATION FOR THE YEAR..........32.85 DEPARTURE......+2.69 ASOS.............35.41 # # Includes erroneous ASOS precipitation data on 2/13/08. PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2008 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system gust when significant TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 8/1 85/66/76/+4/0.00/.../.. 16 WSW 8/2 80/65/73/+1/0.80/.../.. 21 NW TSTM * 8/3 81/61/71/-1/0.56/.../.. 52 NW Aero 55 MPH NW TSTM 8/4 79/60/70/-2/0.01/.../.. 25 WNW 8/5 72/63/68/-4/T/.../... 21 NE 8/6 64/60/62/-10/.../.../.. 31 ESE 8/7 morning low temp. 61F; our normal low is now 62F NEW DAILY RECORDS FOR AUGUST 8/3 - PEAK GUST OF 52 MPH FROM THE NW IS NEW RECORD FOR THE DATE; PREVIOUS RECORD 41 MPH NE IN 1964 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 7 HIGH 95F IN 1924 LOW 51F IN 2004 PRECIP 3.32 INCHES IN 1926 PEAK GUST 51 MPH NE 1975 RECORDS FOR AUGUST 8 HIGH 93F IN 1909,1949 LOW 47F IN 1903 PRECIP 3.08 INCHES IN 1976 PEAK GUST 45 MPH WNW IN 1958 TODAY'S REPORT PREPARED By: Stephanie Radner