BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 9, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME COOL, SHOWERY AND FOGGY TODAY... Dense fog has covered the summit all day today with drizzle and a few light rain showers adding up to 0.02 inch through 2 PM EDT. Today's observations: 7 A.M. Weather: Sky obscured with dense fog and light drizzle Temperature: 58F, Dew point: 58F, Wind: NNE at 8 kt Sea-level pressure: 29.92 inches Hg, rising Visibility: 1/16 mile 6-hour min temp. 58F BHO SA 1155 W1 X 1/16L-F 133/58/58/0308/992/ WND LGT/ 8//// 51020 6000/ 10063 20058 10 A.M. Weather: Sky obscured with dense fog and light drizzle Temperature: 58F, Dew point: 58F, Wind: NNW at 9 kt Sea-level pressure: 29.96 inches Hg, rising Visibility: 1/8 mile 3-hourly precipitation: 0.02 inch BHO SA 1455 W2 X 1/8L-F 153/58/58/3409/996/ 8//// 51014 6002/ 1 P.M. Weather: Sky obscured with dense fog Temperature: 56F, Dew point: 56F, Wind: NNE at 8 kt Sea-level pressure: 29.97 inches Hg, rising Visibility: 1/16 mile 6-hour max temp. 59F 6-hourly precipitation: 0.02 inch BHO SA 1755 W1 X 1/16F 156/56/56/0308/997/ RW-E05L-E05 WND LGT/ 8//// 53003 6002/ 10059 20056 WEATHER SUMMARY FOR FRIDAY, JUNE 8 TEMPERATURE (DEGREES F) MAX.....78 NORMAL.....74 MIN.....58 NORMAL.....54 MEAN....68 NORMAL.....64 DEPARTURE FROM 30-YEAR NORMAL...........+4 TOTAL DEPARTURE FOR THE MONTH..........+14 (+1.6 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............0 DEPARTURE.........-3 TOTAL HEATING UNITS FOR THE MONTH...........27 DEPARTURE.........-6 TOTAL HEATING UNITS FOR THE SEASON........5858 DEPARTURE.......-472 TOTAL HEATING UNITS LAST SEASON TO DATE...5769 DIFFERENCE.......+89 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............20 WSW AT 12:13 A.M. AEROVANE.............16 WSW AT 12:13 A.M. ASOS.................N/A # DAVIS................N/A FASTEST MILE FOR YESTERDAY..............15 WSW AT 12:10 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A # MAXIMUM 2-MINUTE DAVIS AVERAGE..........15 SW AT 12:05 A.M. AVERAGE WIND SPEED AND DIRECTION.......8.3 SW ASOS.................N/A # DAVIS...............7.4 SSE [166 deg] # 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...TRACE DEPARTURE.....-0.13 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.81 DEPARTURE.....+0.77 ASOS..............1.83 TOTAL PRECIPITATION FOR THE YEAR..........25.97 DEPARTURE.....+3.19 ASOS.............25.47 PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 6/1 87/56/72/+10/0.12/.../.. 45 NNW Aero 44 MPH TSTM AM/PM 6/2 87/64/76/+14/0.01/.../.. 23 SSE TSTM PM 6/3 68/50/59/-3/0.14/000/000 24 NNE TSTM AM (no rain) 6/4 63/50/57/-6/1.52/000/00 35 NE TSTM 10:15-10:50 A.M. 6/5 78/57/68/+5/0.01/.../.. 38 S 6/6 70/49/60/-3/0/.../.. 35 W 6/7 69/44/57/-7/0/.../.. 23 W 6/8 78/58/68/+4/0/.../.. 20 WSW 6/9 morning low temp. 57 deg; normal now 54 deg. NEW DAILY RECORDS FOR JUNE: 6/4 - NEW RECORD DAILY RAINFALL OF 1.52 INS; THE PREVIOUS RECORD WAS 1.29 INS. IN 1898. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 9 HIGH 92F IN 1984 LOW 40F IN 1980 PRECIP 2.08 INCHES IN 1931 PEAK GUST 67 MPH NW IN 1973 RECORDS FOR JUNE 10 HIGH 92F IN 1967,1974,1984 LOW 42F IN 1913,1920 PRECIP 2.51 INCHES IN 1931 PEAK GUST 60e MPH NW IN 1941 TODAY'S REPORT PREPARED By: Mike Iacono If you do not wish to receive this Daily Discussion and Climate Summary from the Blue Hill Observatory, please send an email to sitemaster@bluehill.org.