BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY CLIMATE SUMMARY THURSDAY, JUNE 17, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME [unless otherwise noted] DISCUSSION AT 2 P.M. Warm humid conditions continue today with dewpoints rising to middle 60's while temperatures are again into the middle 80's. A very light seabreeze began just before 2 p.m. and the temp. dropped about 5 degrees in a few minutes. The high was 85. TODAY'S OBS... 6/17/2004 THU 8 a.m. overcast visibility 20 miles and hazy temp. 72; dewpoint 61; wind sw at 07 mph; six hourly minimum temp. 68 BHO SA 1155 E130 OVC 20 176/72/61/2306/005/ FEW LWR AC BINOVC N-E AND SML BINOVC S-SW HAZY/ 8/07/ 55003 10072 20068 BHO SA 1455 E130 OVC 12 173/79/65/2703/004/ FEW MDT CU FRMG SW BINOVC HAZY/ 8/27/ 58003 11 a.m. overcast with breaks visibility 12 miles and hazy temp. 79; dewpoint 65; wind w at 04 mph 2 p.m. moderate cumulus and overcast altocumulus with breaks and 12 miles visibility hazy; temp. 80; dewpoint 66; rh 62%; wind ne at 04 mph; light seabreeze began at 1:54 p.m.; six hourly max. temp. 85 deg. BHO SA 1755 45 SCT E100 OVC 12 154/80/66/0503/998/ MDT CU ALQDS BINOVC HAZY LGT SEABREEZE BEGAN 54/ 8/23// 57019 10085 20072 WEATHER SUMMARY FOR WEDNESDAY, JUNE 16: TIMES: EASTERN DAYLIGHT TIME TEMPERATURE (DEGREES F) MAX.....85 NORMAL.....76 Hazen shelter: 85.3... @ 3:51 p.m. MIN.....66 NORMAL.....56 Hazen shelter: 66.3 ...@ 2:26 a.m. MEAN....76 NORMAL.....66 DEPARTURE FROM 30-YEAR NORMAL...... + 10 TOTAL DEPARTURE FOR THE MONTH...... -12 JUNE IS AVERAGING AROUND 1.0 DEGREE COOLER THAN NORMAL DAILY.... HEATING DEGREE DAYS TOTAL HEATING DEGREE DAYS FOR YESTERDAY....... 0 DEPARTURE.....- 2 TOTAL HEATING DEGREE DAYS FOR THE MONTH...... 70 DEPARTURE.... +16 TOTAL HEATING DEGREE DAYS FOR THE SEASON....6283 DEPARTURE.....-68 TOTAL HEATING DEGREE DAYS FOR LAST SEASON...6860 DIFFERENCE...-577 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........20 NW AT 4:08 a.m. AEROVANE.........22 NW AT 4:08 a.m. ASOS.............20 NW AT 4:08 a.m. DAVIS............20 NW AT 1:31 a.m. FASTEST MILE FOR YESTERDAY..........14 NW AT 3:24 a.m. ** MAXIMUM 2-MINUTE ASOS AVERAGE.......15 W AT 6:33 p.m. ** earlier occurrence OUR AVERAGE WIND SPEED/DIRECTION.... 8.1 NW ASOS AVERAGE WIND SPEED............. 9.1 WNW [290 deg ] DAVIS AVERAGE WIND SPEED/DIRECTION.. 8.4 WNW [285 deg ] PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.00 DEPARTURE...-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.21 DEPARTURE....-0.89 ASOS..............1.17 TOTAL PRECIPITATION FOR THE YEAR..........22.13 DEPARTURE....-1.71 ASOS.............20.42 PRELIMINARY CLIMATE SUMMARY FOR JUNE 2004......CALENDAR DAY DATA DATA REPORTED: 24 HOUR PERIODS ENDING MIDNIGHT EST 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 51/46/49/-13/0.32/000/00 28 MPH E 6/2 74/46/60/-2/0.08/254/28 31 MPH WNW TSTM 6/3 72/50/61/-1/0.21/463/51 40 MPH NW TSTM *Aerovane 46 MPH NW 6/4 72/47/60/-3/0/835/92 21 MPH S 6/5 69/50/60/-3/0/501/55 35 MPH E 6/6 55/48/52/-11/0.32/000/00 31 MPH NE 6/7 73/48/61/-3/T/428/47 21 MPH S 6/8 87/57/72/+8/0/793/87 29 MPH SSW 6/9 90/67/79/+15/0.23/813/89 29 MPH SW TSTM 6/10 69/54/62/-2/0.05/146/16 32 MPH NE 6/11 70/49/60/-5/0/887/97/ 27 MPH NW 6/12 71/49/60/-5/0/897/98 23 MPH S 6/13 74/51/63/-2/0/805/88 31 MPH S 6/14 69/54/62/-3/0/T/027/03 32 MPH S 6/15 86/62/74/+8/0/669/73 30 MPH W 6/16 85/66/76/+10/0/824/90 20 MPH NW 6/17 morning low temp. 68 During June to date there has been one daily record established so far for the month... The low maximum temp. of 51 degrees on the 1st edged out the previous low maximum for the date of 52 degrees in 1922 and 1984. * gust not associated with TSTM...but rather a rain/wind squall... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): 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 RECORDS FOR JUNE 18 HIGH 93F IN 1929,1994 LOW 39F IN 1920 PRECIP 3.36 INS 1998 PEAK GUST 48e MPH W IN 1943 TODAY'S REPORT BY: Robert Skilling / Kim Jeffs