BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, AUGUST 30, 2015 ALL TIMES ARE IN EASTERN STANDARD TIME A FOURTH CONSECUTIVE BEAUTIFUL DRY WEATHER LATE AUGUST DAY TEMPERATURES AVERAGED RIGHT ON NORMAL PAST TWO DAYS LONG SPELL OF VERY WARM TO HOT HUMID WEATHER ENDED 26TH Today was a fourth consecutive day with temperatures running very close to normal for late August. This came after the days August 12-26 were all above normal except for two. Hazy conditions persisted through all 3 observation times despite dropping humidity levels as temperatures warmed up today into the mid 80's. Clouds began to move in by the 1 o’clock observation creating mostly cloudy conditions as the air pressure began to drop during the afternoon. Today's Observations: 7 A.M. Weather: Scattered Altocumulus, Broken Cirrus Temperature: 66F; Dew Point: 64F; Wind: WSW at 8 kts, Sea-level pressure: 30.08 ins. Hg, falling then rising Visibility: 15 miles, haze 6-hr Max temp: 66F 6-hr Min temp: 65F 24-hr precip: 0.00 ins BHO SA 1155 75 SCT E225 BKN 15 187/66/64/2508/008/ HAZY/ 8/032 53005 10066 20065 10 A.M. Weather: Scattered cumulus, thin broken cirrus, few lower cirrus Temperature: 79F; Dew Point 64F; Wind: W at 6 kts Wind: Light Sea-level pressure: 30.08 ins. Hg, steady Visibility: 35 miles, haze BHO SA 1455 250 SCT 35 187/79/64/2406/008/ HAZY WND LGT/ 8/002 54000 1 P.M. Weather: Scattered Altocumulus, Broken Cirrostratus Temperature: 86F; Dew Point: 60F; Wind: W at 15G21 kts Sea-level pressure: 30.04 ins. Hg, steady then falling Visibility: 35 miles, haze 6-hr Max temp: 86F 6-hr Min temp: 66F BHO SA 1755 65 SCT E250 BKN 35 174/86/60/2815G21/004/ HAZY 8/085 58013 10086 20066 SUMMARY FOR SATURDAY, AUGUST 29, 2015 TEMPERATURE (DEGREES F) MAX.....81 NORMAL.....77 MIN.....60 NORMAL.....60 MEAN....71 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL........................+2 TOTAL DEPARTURE FOR THE MONTH.......................+81 [+2.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............6 DEPARTURE.........+2 TOTAL COOLING UNITS FOR THE MONTH.............248 DEPARTURE.........+70 TOTAL COOLING UNITS FOR THE SEASON............642 DEPARTURE........+113 TOTAL COOLING UNITS LAST SEASON TO DATE.......470 DIFFERENCE.......+172 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................21 WSW AT 12:52 P.M. ASOS........................20 SW AT 11:59 A.M. DAVIS.......................20 WSW AT 1:50 P.M. RMY 21 FASTEST MILE FOR YESTERDAY.....................13 SW AT 11:08 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................14 SW AT 11:17 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................13 SW AT 2:01 A.M. AVERAGE WIND SPEED AND DIRECTION...............8.7 W ASOS........................9.4 DAVIS...................... 7.5 W [272 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00 DEPARTURE.....-0.11 ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........2.90 DEPARTURE.....-0.91 ASOS..............2.88 TOTAL PRECIPITATION FOR THE YEAR...........30.26 DEPARTURE.....-4.54 ASOS...............N/A *** *** ASOS annual total not available due to erroneous readings PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST RMY: R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 8/1 88/68/78/+6/0.06/729/84 28 WNW RMY N/A 8/2 86/62/74/+2/0.00/865/100 24 SW RMY N/A 8/3 89/68/79/+7/0.00/690/80 31 S RMY N/A 8/4 86/66/76/+4/0.31/422/49 45 W RMY 50 TSTM 8/5 84/64/74/+2/0.00/765/89 28 WNW RMY 27 8/6 80/59/70/-2/0.00/685/80 22 W RMY 21 8/7 78/61/70/-2/0.00/845/99 20 ESE RMY 18 8/8 77/58/68/-4/0.00/741/87 18 E RMY N/A 8/9 72/59/66/-6/T/458/54 27 NNE RMY 26 8/10 84/58/71/0/0.00/830/98 28 S RMY N/A 8/11 70/63/67/-4/0.52/000/00 32 SSE RMY 35 8/12 83/65/74/+3/0.00/766/91 22 W RMY 20 8/13 83/62/73/+2/0.00/832/99 18 WNW RMY 18 8/14 86/63/75/+4/0.00/837/100 21 S RMY 23 8/15 91/66/79/+8/..../534/64 38 W RMY 41 TSTM 8/16 87/65/76/+5/..../774/93 16 W RMY N/A 8/17 90/70/80/+9/0.00/805/97 17 W RMY 18 8/18 92/70/91/+10/0.27/546/66 31 W RMY 32 TSTM 8/19 87/69/78/+8/0.00/775/94 23 S RMY 24 8/20 85/70/78/+8/0.00/723/88 22 ESE RMY 22 8/21 82/69/76/+6/0.31/98/12 21 S RMY 23 8/22 73/66/70/0/T/.../.. 18 ENE RMY 16 8/23 70/66/68/-2/0.18/000/00 20 ENE RMY 18 8/24 78/67/73/+3/..../.../.. 18 SSW RMY 19 8/25 85/68/77/+8/..../.../.. 22 S RMY 22 8/26 82/64/73/+4/..../.../.. 21 NW RMY 22 8/27 79/59/69/+0/0.00/.../.. 22 W RMY 23 8/28 80/58/69/+0/0.00/.../.. 15 NW RMY 15 8/29 81/60/70/+2/0.00/.../.. 21 WSW RMY 21 8/30 low since midnight is 65F; normal low is now 60F DAILY RECORDS FOR AUGUST 2015 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 30 HIGH 94F IN 1953 LOW 39F IN 1965 PRECIP 2.75 INCHES IN 1936 PEAK GUST 43 MPH NW IN 1965 RECORDS FOR AUGUST 31 HIGH 94F IN 1953 LOW 42F IN 1976 PRECIP 2.46 INCHES IN 1954 PEAK GUST 125 MPH SE IN 1954 [CAROL - RECORD FOR MONTH TODAY'S REPORT PREPARED BY: Robert Millette