BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, AUGUST 26, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Scattered cirrus and cirrocumulus Temperature: 74F, Dew point: 71F, Wind: SW at 9 kt Sea-level pressure: 29.89 inches Hg, rising Visibility: 1/2 of a mile with haze 6-hour min temp: 71F BHO SA 1155 220 SCT 250 SCT 1/2H 122/74/71/2309/989/ 8/009 51021 10074 20071 10 A.M. Weather: Broken altocumulus, overcast cirrus Temperature: 82F, Dew point: 65F, Wind: W at 10 kt Sea-level pressure: 29.91 inches Hg, rising Visibility: 20 miles BHO SA 1455 150 SCT 200 OVC 20 129/82/65/2610/991/ HAZY/ 8/041 53007 WEATHER SUMMARY FOR SATURDAY, AUGUST 25 TEMPERATURE (DEGREES F) MAX.....93* NORMAL.....77 MIN.....69 NORMAL.....59 MEAN....81 NORMAL.....68 DEPARTURE FROM 30-YEAR NORMAL........+13 TOTAL DEPARTURE FOR THE MONTH.........+3 (+0.4 DEGREES/DAY) * TIES RECORD HIGH MAXIMUM (1947,1948) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..............28 SSE AT 5:05 P.M. AEROVANE...............25 SSE AT 5:05 P.M. ASOS...................N/A # DAVIS..................30 S AT 9:36 P.M. FASTEST MILE FOR YESTERDAY................22 S AT 8:12 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A # MAXIMUM 2-MINUTE DAVIS AVERAGE............20 S AT 2:45 P.M. AVERAGE WIND SPEED AND DIRECTION..........14.0 S ASOS...................N/A # DAVIS..................10.4 S [187 deg.] * * Erroneous reading. Kite string caught in Davis anemometer since 8/19 was removed on 8/25. # ASOS WINDS SWITCHED OFF BY NWS 6/6, IT IS NOT KNOWN WHEN THAT DATA WILL RESUME PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE.....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.62 DEPARTURE.....-2.61 ASOS..............0.55 TOTAL PRECIPITATION FOR THE YEAR..........30.98 DEPARTURE.....-1.66 ASOS.............30.22 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2007......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 84/67/76/+4/0/851/98 20 NNE 8/2 92/68/80/+8/0/823/95 21 S 8/3 92/70/81/+9/0/760/88 28 SSW 8/4 89/71/80/+8/0/827/96 29 WSW 8/5 80/62/71/-1/0/842/98 23 SSE 8/6 77/61/69/-3/0.05/129/15 36 SSE Aero 34 MPH SSE TSTM 8/7 82/67/75/+4/0.12/410/48 15 SSE 8/8 88/70/79/+8/0.10/349/41 36 S 8/9 75/60/68/-3/0/722/85 32 NW 8/10 63/53/58/-13/0.19/017/02 16 SSW 8/11 83/52/68/-3/0/743/88 21 WNW 8/12 86/64/75/+4/0/665/79 21 SSW 8/13 83/64/74/+3/0.01/260/31 30 NW TSTM 8/14 78/58/68/-2/0/812/97 23 NW 8/15 83/59/71/+1/0/651/78 36 SSW Aero 34 MPH SSW 8/16 87/67/77/+7/0/641/77 33 SSW 8/17 78/62/70/0/0.07/241/29 43 S Aero 39 MPH S TSTM 8/18 71/52/62/-8/0.08/761/92 46 WNW Aero 42 MPH WNW, Davis 46 MPH WNW TSTM 8/19 74/51/63/-7/0/619/75 25 WNW 8/20 70/56/63/-6/0/411/50 21 ENE 8/21 68/56/62/-7/0/271/33 23 E 8/22 70/55/63/-6/0/.../.. 23 NE Aero 20 MPH NE 8/23 75/59/67/-2/T/.../.. 22 SSE Aero 20 MPH SSE 8/24 88/66/77/+8/0/.../.. 30 SSW Aero 27 MPH SSW 8/25 93/69/81/+13/0/.../.. 25 SSE Aero 25 MPH SSE NEW DAILY RECORDS FOR AUGUST 2007: 8/18 - NEW RECORD PEAK GUST FOR OF 46 MPH WNW; the previous record was 39 MPH SW in 1991 8/25 - RECORD HIGH TEMPERATURE OF 93F; ties previous record set in 1947,1948 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 26 HIGH 96F IN 1900, 1948 LOW 46F IN 1885 PRECIP 5.85 INCHES IN 1924 PEAK GUST 55e MPH NNW 1947 RECORDS FOR AUGUST 27 HIGH 99F IN 1948 LOW 44F IN 1885 PRECIP 2.77 INCHES IN 1946 PEAK GUST 48 MPH NW 1983 TODAY'S REPORT PREPARED By: Andrew Hoell