BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JULY 15, 2008     ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED    IDEAL WEATHER TODAY FOR MID-JULY SUNNY AND VERY WARM WITH PLEASANTLY LOW HUMIDITY   West winds gradually backing to southwest and south are beginning to bring us increasingly warm mid-July weather. Visibility is reduced to 40 to 50 miles in light haze but dew points have dropped into the middle 50's as air temperature rises through the mid-80's allowing humidity levels to drop into the pleasant 30% range. July continues to average a couple of degrees warmer than normal with near normal rainfall.   Today's observations:   8 A.M. EDT Weather: Thin scattered cirrus (cirrus ENE-S), patch of altocumulus castellanus distant W-NNW  Temperature: 73F, Dew point: 60F,  Wind: SW at 5 kts  Sea-level pressure: 30.05 inches Hg, rising Visibility: 40 miles, WNW 50, NE-SE 20, light haze, Shallow inversion dissipating    6-hourly minimum temperature: 67F     24-hourly rainfall: 0.36 in. BHO SA 1155 250 –SCT 40 177/73/60/2305/005/ PTCHS ACC DSNT W-NNW CI ENE-S SHLW INVSN DSSPTNG VSBY WNW 50 NE-SE 20 LGT HZ/ 8/081 51017 MANUAL 70036 ASOS 70036 10073 20067     11 A.M. EDT Weather: Scattered cirrus (dense), cumulus and moderate cumulus forming, few altocumulus castellanus WNW-NNW, few altocumulus lenticularis SE-W, dense cirrus layer ENE-SSE  Temperature: 81F, Dew point: 57F,  Wind: SW at 8 kts Sea-level pressure: 30.08 inches Hg, rising Visibility: 45 miles, 30 NE-SE   BHO SA 1455 220 SCT 45 187/81/57/2208/008/ CU/MDT CU FRMG PTCHS ACC WNW-NNW PTCHS ACSL SE-W DENS CI LYR ENE-SSE VSBY NE-SE 30/ 8/282 52009   2 P.M. EDT Weather: Scattered cumulus and moderate cumulus, dense cirrus layer distant ESE-S Temperature: 85F, Dew point: 56F,  Wind: SSW at 12G19 kts, Wind: direction variable S TO WSW Sea-level pressure: 30.06 inches Hg, falling Visibility: 45 miles, light haze 6-hourly max. temp. 86F  BHO SA 1755 60 SCT 220 SCT 45 181/85/56/2112G19/006/ MDT CU ALQDS DENS CI LYR ESE-S LGT HZ WND 17V24/ 8/202 58006 10086 20073   WEATHER SUMMARY FOR MONDAY, JULY 14   TEMPERATURE (DEGREES F) MAX.....80    NORMAL.....81 MIN.....67    NORMAL.....62 MEAN....74    NORMAL.....72   DEPARTURE FROM 30-YEAR NORMAL.............+2 TOTAL DEPARTURE FOR THE MONTH............+34 [+2.2 DEGREES/DAY]   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY............23 W   AT  5:59 P.M.                       AEROVANE.............23 W   AT  5:59 P.M.                         ASOS.................23 W   AT  6:00 P.M.                        DAVIS................25 W   AT  5:59 P.M.  FASTEST MILE FOR YESTERDAY..............17 W   AT  6:01 P.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...........16 W   AT  6:01 P.M.    MAXIMUM 2-MINUTE DAVIS AVERAGE..........18 W   AT  8:42 A.M.                        AVERAGE............ 9.5 W                    ASOS................9.1                       DAVIS...............9.4 SW [230 deg]    PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.36   DEPARTURE......+0.24                           ASOS..............0.36 TOTAL PRECIPITATION FOR THE MONTH..........1.76   DEPARTURE......+0.06                           ASOS..............1.79   TOTAL PRECIPITATION FOR THE YEAR..........26.76   DEPARTURE......-0.61                             ASOS.............29.17 # # Includes erroneous ASOS precipitation data on 2/13/08.   PRELIMINARY CLIMATE SUMMARY FOR JULY 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   7/1  83/66/75/+5/0.15/411/45     28 SSW   TSTM 7/2  84/61/73/+3/1.02/593/65     44 W     TSTM Small hail * 7/3  85/63/74/+4/T/793/87        45 SW    Aero 44 MPH SW 7/4  69/59/64/-6/0.22/018/02     25 NE 7/5  70/62/66/-5/0.01/000/00     17 E 7/6  81/65/73/+2/0/245/27        20 S 7/7  86/67/77/+6/0/563/62        21 S 7/8  89/69/79/+8/0/753/83        30 SSE  7/9  88/70/79/+8/T/.../..        36 SSW  TSTM Aero 35 MPH SSW 7/10 82/65/74/+3/T/.../..        28 W    Aero 29 MPH W 7/11 83/61/72/0/0/.../..         17 NW   7/12 82/65/74/+2/0/.../..        28 S  7/13 81/66/74/+2/0/.../..        38 S    Aero 40 MPH S  7/14 80/67/74/+2/0.36/.../..     23 W    TSTM   7/15 morning low temp. 67F; our normal low is now 62F   NEW DAILY RECORDS FOR JULY None to date...         DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR JULY 15 HIGH 94F IN 1995 LOW 50F IN 1929, 1930 PRECIP 1.64 INS IN 1896 WIND 71 MPH WNW IN 2002   RECORDS FOR JULY 16 HIGH 94F IN 1968, 1980, 1983, 1999 LOW 50F IN 1889, 1903 PRECIP 0.89 INS IN 1919 WIND 48e MPH SW 1944   TODAY'S REPORT PREPARED By: Robert Skilling