BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, JUNE 28, 2007   ALL TIMES ARE IN EASTERN STANDARD TIME   NEW RECORD HIGH MINIMUM TEMPERATURE AND RECORD HIGH MAXIMUM EQUALED ON JUNE 27   A new record high minimum temperature was established for June 27 at 72 degrees; the previous record was 71 degrees set in 2003.   The record high maximum temperature was equaled for June 27 at 93 degrees; this was also reached in 1999.   Today, considerable high cloudiness was cleared away by noon, and sunshine during the early afternoon has boosted temperatures into the upper 80s. If the temperature reaches 90 degrees today, we will achieve an official 3-day heatwave. This would be the first heatwave since August 1-3, 2006.   Today's observations:   7 A.M.   Weather:  Temperature: 75F, Dew point: 66F, Wind: SW at 12 kts Sea-level pressure: 29.88 inches Hg, rising Visibility: 9 miles, hazy 6-hour min temp. 71F   24-hour precip: 0.00 in. BHO SA 1155 130 SCT 150 SCT 250 –OVC 9 120/75/66/2212G20/988/ HAZY/ 8/071 53006 10075 20071      10 A.M. Weather:  Temperature: 79F, Dew point: 69F, Wind: SW at 11 kts Wind: Variability S-W Sea-level pressure: 29.88 inches Hg, steady Visibility: 10 miles, hazy       BHO SA 1455 E130 OVC 10 117/79/69/2311G18/988/ BINOVC HAZY/ WND 18V26/ 8/071 58003 1 P.M. Weather:  Temperature: 87F, Dew point: 69F, Wind: WSW at 15G23 kts Wind: Variability SSW-W Sea-level pressure: 29.84 inches Hg, falling Visibility: 12 miles, hazy   6-hour max. temp: 87F BHO SA 1755 50 SCT 150 –SCT 250 –BKN 300 –BKN 12 106/87/69/2415G23/984/ FEW ACSL/ HZY WND 21V27/ 8/241 58012 10087 20074    WEATHER SUMMARY FOR WEDNESDAY, JUNE 27   TEMPERATURE (DEGREES F) MAX.....93    NORMAL.....78 MIN.....72    NORMAL.....59 MEAN....83    NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL............+14 TOTAL DEPARTURE FOR THE MONTH............+ 8 (+0.1 DEGREES/DAY)   HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............0  DEPARTURE.........-1 TOTAL HEATING UNITS FOR THE MONTH...........80  DEPARTURE.........+9   TOTAL HEATING UNITS FOR THE SEASON........5911  DEPARTURE.......-457 TOTAL HEATING UNITS LAST SEASON TO DATE...5791  DIFFERENCE......+120   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............33 S AT 6:28 P.M.                        AEROVANE.............33 S AT 6:25 P.M.                      ASOS.................N/A  #                    DAVIS................37 S AT 6:28 P.M.        FASTEST MILE FOR YESTERDAY..............26 S AT 5:36 P.M.   MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A  # MAXIMUM 2-MINUTE DAVIS AVERAGE..........28 S AT 5:36 P.M.          AVERAGE WIND SPEED AND DIRECTION........14.1 SSW                        ASOS.................N/A  #                    DAVIS................15.2 SSW [210 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....0.00  DEPARTURE.....-0.13                          ASOS..............0.00  TOTAL PRECIPITATION FOR THE MONTH..........2.64  DEPARTURE.....-0.90                          ASOS..............2.60    TOTAL PRECIPITATION FOR THE YEAR..........26.80  DEPARTURE.....+1.64                          ASOS.............26.24      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/-8/0/769/84           21 NNE 6/16 80/55/68/+2/0/577/63           25 SW   6/17 85/58/72/+6/T/632/69           31 W   6/18 79/60/70/+4/0/880/96           23 NW 6/19 84/62/73/+6/0/578/63           25 SSW 6/20 74/60/67/0/0.38/147/16         25 W 6/21 77/56/67/0/0.23/823/90         30 WSW  TSTM evening  6/22 71/54/63/-4/0.06/560/61        37 NW   TSTM 1:15-1:30 P.M. 6/23 68/50/59/-9/0/816/89           33 W       6/24 76/52/64/-4/0/807/88           28 W      6/25 86/64/75/+7/0/752/82           31 SSW 6/26 92/63/78/+10/0/806/88          25 SSW 6/27 93/72/83/+14/0/726/82          33 S   6/28 morning low temp. 71 deg; normal low 59 deg.     NEW DAILY RECORDS FOR JUNE 2007:    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 28 HIGH 95F IN 1991 LOW 47F IN 1970 PRECIP 2.09 INS IN 1938 PEAK GUST 52 MPH WSW IN 1993   RECORDS FOR JUNE 29 HIGH 93F IN 1933 LOW 42F IN 1919 PRECIP 1.60 INS IN 1889 PEAK GUST 49 MPH S IN 1957   TODAY'S REPORT PREPARED By: Robert Skilling/Eli Melaas/Steve Breault