BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, JUNE 29, 2008 ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED Today's observations: 8 A.M. EDT Weather: Obscurred by fog Temperature: 64F, Dew point: 63F, Wind: Light and variable Sea-level pressure: 29.85 inches Hg, rising Visibility: 1/16 of a mile 6-hourly minimum temperature: 61F BHO SA 1155 W2 X1 1/16F 110/64/63/1703/985/ WND L/V/ 8//// 53003 10064 20061 11 A.M. EDT Weather: Obscurred by fog Temperature: 69F, Dew point: 67F, Wind: S at 6 kt Sea-level pressure: 29.87 inches Hg, rising Visibility: 3/4 of a mile BHO SA 1455 W2 X1 3/4F 115/69/67/1806/987/ WND LGT/ 8//// 53005 WEATHER SUMMARY FOR SATURDAY, JUNE 28 TEMPERATURE (DEGREES F) MAX.....71 NORMAL.....79 MIN.....59 NORMAL.....59 MEAN....65 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL.............-4 TOTAL DEPARTURE FOR THE MONTH............+91 [+3.1 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY.............0 DEPARTURE........-1 TOTAL HEATING UNITS FOR THE MONTH............41 DEPARTURE.......-31 TOTAL HEATING UNITS FOR THE SEASON.........5942 DEPARTURE......-427 TOTAL HEATING UNITS LAST SEASON TO DATE....5911 DIFFERENCE......+31 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............22 NE AT 2:12 P.M. * AEROVANE.............20 NE AT 2:00 P.M. ASOS.................22 ENE AT 2:06 P.M. DAVIS................22 NE AT 2:02 P.M. FASTEST MILE FOR YESTERDAY..............19 NE AT 2:04 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........17 ENE AT 2:25 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..........17 NE AT 2:04 P.M. AVERAGE.............8.4 NE ASOS................8.7 DAVIS...............8.7 NE [39 deg] * Last of several occurrences. PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE......-0.13 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.32 DEPARTURE......-1.35 ASOS..............2.33 TOTAL PRECIPITATION FOR THE YEAR..........24.98 DEPARTURE......-0.43 ASOS.............27.37 # # Includes erroneous ASOS precipitation data on 2/13/08. PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 6/1 79/58/69/+7/0/833/92 32 W 6/2 76/53/65/+3/0/834/92 28 WNW 6/3 84/58/71/+9/0/707/78 28 S 6/4 66/54/60/-3/0.53/000/00 25 SSW Aero 23 MPH SSW 6/5 55/51/53/-10/0.11/000/00 31 N Aero 28 MPH N 6/6 59/51/55/-8/0.13/000/00 21 SSE 6/7 91/55/73/+9/0.07/575/63 45 SW Aero 46 MPH SW TSTM 6/8 91/72/82/+18/0/703/77 31 WSW 6/9 94/71/83/+19/0/794/87 29 W 6/10 98/72/85/+21/0/876/97 58 W Aero 58 MPH W 6/11 85/68/77/+12/0/804/88 28 W Aero 26 MPH W 6/12 78/60/69/+4/0/888/97 28 NW Aero 26 MPH NW 6/13 82/55/69/+4/0/888/97 21 NW 6/14 78/62/70/+5/0.08/687/75 21 NW TSTM 6/15 63/54/59/-7/0.42/000/00 20 E 6/16 63/56/60/-6/0.55/000/00 25 SSE TSTM 6/17 77/57/67/+1/0/587/64 25 S TSTM 6/18 71/52/62/-4/0.01/642/70 27 S 6/19 75/56/66/-1/0/752/82 23 S Aero 20 MPH S 6/20 78/57/68/+1/0.20/459/50 27 W TSTM 6/21 81/59/70/+3/0/826/90 25 SSE 6/22 80/61/71/+4/0.01/266/29 38 S Aero 37 MPH S 6/23 76/65/71/+3/0.02/009/01 23 S TSTM 6/24 77/58/68/0/0.15/.../.. 40 WNW Aero 39 MPH WNW TSTM 6/25 81/58/70/+2/0/.../.. 25 W Aero 24 MPH SW 6/26 79/62/71/+3/0.02/.../.. 31 S Aero 30 MPH S 6/27 85/64/75/+6/0.02/.../.. 39 NW Aero 40 MPH NW TSTM 6/28 71/59/65/-4/0/.../.. 22 NE NEW DAILY RECORDS FOR JUNE TO DATE.... 6/8 - MINIMUM TEMPERATURE OF 72F EQUALED RECORD HIGH MINIMUM SET IN 1999. 6/9 - MAXIMUM TEMPERATURE OF 94F IS NEW RECORD FOR THE DATE, PREVIOUS RECORD 92F IN 1984 6/10 - MAXIMUM TEMPERATURE OF 98F IS NEW RECORD FOR THE DATE, PREVIOUS RECORD 92F IN 1967,1974,1984 MINIMUM TEMPERATURE OF 72F IS NEW RECORD HIGH MINIMUM FOR DATE, PREVIOUS RECORD WAS 71F IN 1984 6/11 - MINIMUM TEMPERATURE OF 68F EQUALED RECORD HIGH MINIMUM SET IN 1973, 1984. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 29 HIGH 93F IN 1933 LOW 42F IN 1919 PRECIP 1.60 INCHES IN 1889 PEAK GUST 49 MPH S IN 1957 RECORDS FOR JUNE 30 HIGH 94F IN 1964 LOW 47F IN 1919 PRECIP 3.04 INCHES IN 1921 PEAK GUST 51 MPH WNW IN 1957 TODAY'S REPORT PREPARED By: Andrew Hoell