BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, JUNE 20, 2008    ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED   The summer solstice occurs today at 7:59 P.M. EDT.  Tomorrow June 21 is the longest day of the year with 918 minutes (15.3 hours) of possible sunshine.   Please consider joining us for a Birds and Botany nature hike tomorrow afternoon at 4:30 P.M. followed by sunset viewing from the summit. Please visit our website for more information:  http://www.bluehill.org/events.html   Today's observations:   8 A.M. EDT Weather: Broken altocumulus, few stratocumulus NE-E Temperature: 63F, Dew point: 54F,  Wind: NNW at 4 kts Sea-level pressure: 29.99 inches Hg, rising    Visibility: 45 miles 6-hourly minimum temperature: 57F  24-hourly rainfall: 0.00 in.  BHO SA 1155 E100 BKN 45 157/63/54/3304/999/ FEW SC DSNT NE-E THN K LYR NE-E AND SE-SW/ 8/530 51012 10063 20057   11 A.M. EDT Weather: Scattered cumulus/moderate cumulus, scattered altocumulus, few ACSL E-SE Temperature: 73F, Dew point: 53F,  Wind: SSE at 8 kts, Wind: Direction variability E-SW Sea-level pressure: 30.00 inches Hg, rising Visibility: 45 miles  BHO SA 1455 50 SCT 90 SCT 45 160/73/53/1508/000/ MDT CU ALQDS FEW ACSL E-SE WND 10V22/ 8/240 53005   2 P.M. EDT Weather: Broken moderate cumulus, altocumulus/ACCU Temperature: 74F, Dew point: 49F,  Wind: SSW at 11 kts Wind: Direction variability S-WSW Sea-level pressure: 29.98 inches Hg, falling Visibility: 40 miles    6-hourly max. temperature: 77F BHO SA 1755 E50 BKN 65 BKN 40 154/74/49/2011/998/ MDT CU/ACCU ALQDS WND 17V25/ 8/260 56006 10077 20063   WEATHER SUMMARY FOR THURSDAY, JUNE 19   TEMPERATURE (DEGREES F) MAX.....75    NORMAL.....76 MIN.....56    NORMAL.....57 MEAN....66    NORMAL.....67   DEPARTURE FROM 30-YEAR NORMAL.............-1  TOTAL DEPARTURE FOR THE MONTH............+73 [+3.6 DEGREES/DAY]   HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY.............0  DEPARTURE........-2 TOTAL HEATING UNITS FOR THE MONTH............41  DEPARTURE.......-19 TOTAL HEATING UNITS FOR THE SEASON.........5942  DEPARTURE......-415 TOTAL HEATING UNITS LAST SEASON TO DATE....5902  DIFFERENCE......+40   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............23 S   AT 5:53 P.M.                        AEROVANE.............20 S   AT 5:52 P.M.                       ASOS.................23 SSW AT 5:53 P.M.                         DAVIS................23 SSW AT 5:52 P.M.   FASTEST MILE FOR YESTERDAY..............17 S   AT 5:54 P.M.     MAXIMUM 2-MINUTE ASOS AVERAGE...........17 SSW AT 5:55 P.M.     MAXIMUM 2-MINUTE DAVIS AVERAGE..........17 S   AT 5:45 P.M.                       AVERAGE..............7.3 SSW                    ASOS.................7.9                      DAVIS................6.8 SSW [197 deg]   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..........1.90   DEPARTURE......-0.60                           ASOS..............1.93   TOTAL PRECIPITATION FOR THE YEAR..........24.56   DEPARTURE......+0.32                           ASOS.............26.97 # # 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/.../..     26 S 6/19 75/56/66/-1/0/.../..        23 S     Aero 20 MPH S   6/20 morning low temp. 57F; our normal low is now 57F   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 20 HIGH 94F IN 1953 LOW 41F IN 1918 PRECIP 2.62 INS 1945 PEAK GUST 63 MPH NE IN 1967   RECORDS FOR JUNE 21 HIGH 92F IN 1949 LOW 42F IN 1940 PRECIP 1.40 INS 1903 PEAK GUST 51 MPH SSW IN 2000   TODAY'S REPORT PREPARED By: Stephanie Radner