BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 16, 2007 ALL TIMES ARE IN EASTERN STANDARD TIME WARMER AND PARTLY SUNNY TODAY... The temperature has climbed to the mid-70s today for the first time since Monday of this week. Rainfall has been just 0.16 inch, a bit more than a normal daily total, over the past ten days. Today's observations: 7 A.M. Weather: Broken altocumulus and cirrus Temperature: 62F, Dew point: 54F, Wind: SW at 3 kts Sea-level pressure: 30.02 inches Hg, rising Visibility: 20 miles 6-hour min temp. 55F 24-hour precip: 0 BHO SA 1155 100 SCT E130 BKN 250 BKN 20 167/62/54/2203/002/ HAZY WND LGT/ 8/071 53003 10062 20055 10 A.M. Weather: Scattered cumulus, altocumulus, and cirrus uncinus Temperature: 75F, Dew point: 49F, Wind: SW at 3 kts Sea-level pressure: 30.01 inches Hg, falling Visibility: 35 miles BHO SA 1455 35 SCT 130 SCT 200 SCT 35 164/75/49/2303/001/ FEW HIR CI HAZY WND LGT AND VRB/ 8/134 55003 1 P.M. Weather: Scattered cumulus, altocumulus, and cirrus Temperature: 77F, Dew point: 49F, Wind: SE at 4 kts Sea-level pressure: 29.97 inches Hg, falling Visibility: 40 miles BHO SA 1755 35 SCT 120 SCT 250 40 150/77/49/1304/997/ HAZY WND LGT AND VRB/ 8/131 58014 10077 20062 WEATHER SUMMARY FOR FRIDAY, JUNE 15 TEMPERATURE (DEGREES F) MAX.....69 NORMAL.....75 MIN.....46 NORMAL.....56 MEAN....58 NORMAL.....66 DEPARTURE FROM 30-YEAR NORMAL............-8 TOTAL DEPARTURE FOR THE MONTH...........-24 (-1.8 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............7 DEPARTURE.........+5 TOTAL HEATING UNITS FOR THE MONTH...........70 DEPARTURE........+17 TOTAL HEATING UNITS FOR THE SEASON........5901 DEPARTURE.......-448 TOTAL HEATING UNITS LAST SEASON TO DATE...5790 DIFFERENCE......+111 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............21 NNE AT 10:38 A.M. * AEROVANE.............19 NNE AT 10:36 A.M. ASOS.................N/A # DAVIS................21 NNE AT 10:35 A.M. FASTEST MILE FOR YESTERDAY..............13 ENE AT 2:54 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A # MAXIMUM 2-MINUTE DAVIS AVERAGE..........15 N AT 10:40 A.M. AVERAGE WIND SPEED AND DIRECTION.......8.6 NNW ASOS.................N/A # DAVIS...............7.5 N [009 deg] * Last of several occurrences. # 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..........1.97 DEPARTURE......0.00 [CORRECTED] ASOS..............1.97 TOTAL PRECIPITATION FOR THE YEAR..........26.13 DEPARTURE.....+2.42 [CORRECTED] ASOS.............25.61 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/+10/0.12/660/73 45 NNW Aero 44 MPH TSTM AM/PM 6/2 87/64/76/+14/0.01/290/32 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/+5/0.01/455/50 38 S 6/6 70/49/60/-3/0/637/70 35 W 6/7 69/44/57/-7/0/528/58 23 W 6/8 78/58/68/+4/0/748/82 20 WSW 6/9 63/54/59/-5/0.02/000/00 18 ENE 6/10 70/50/60/-4/0/831/91 22 ENE 6/11 77/62/70/+5/0.04/594/65 29 NE 6/12 70/56/63/-2/0.09/192/21 29 NNE 6/13 56/50/53/-12/0.01/000/00 42 NNE Aero 40 MPH NNE 6/14 59/49/54/-11/0/036/04 34 NNE 6/15 69/46/58/-8/0/.../.. 21 NNE 6/16 morning low temp. 55 deg; normal 56 deg. no precipitation 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 16 HIGH 92F IN 1891, 1967 LOW 44F IN 1926 PRECIP 2.17 INS IN 1931 PEAK GUST 55 MPH W IN 1958 RECORDS FOR JUNE 17 HIGH 93F IN 1894 LOW 44F IN 1920 PRECIP 2.79 INS 2001 (Sub-Tropical storm ALLISON) PEAK GUST 55e MPH S IN 1977 TODAY'S REPORT PREPARED By: Mike Iacono/Eli Melaas 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.