BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, AUGUST 31, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0509E SUNSET:  1819E   A LOT OF CLOUD COVER, BUT AN OTHERWISE PLEASANT DAY.... Today marks the 4th day in a row that has again featured a lot of cloud cover. A cold front has moved through early this afternoon marked only by a bump in wind speeds and drying air. Humidity levels are lower than yesterday, holding in the mid 60s this morning, but has started dropping into the low 60s early this afternoon as a weak cold front slipped through. Dew points are expected to continue dropping into the 50s through the remainder of the afternoon and evening. The wind had been light all morning only averaging around 5mph, but has bumped up early this afternoon out of the west gusting 20-25mph. Visibility was limited to 30-40 miles this morning due to haziness, but as the air dries out early this afternoon, the visibility has increased to around 60 miles! The high so far today is 80F, this is 2 degrees above the daily normal maximum of 78F. The low so far today is 66F, which is 6 degrees above the daily normal minimum of 60F. ---------------------------------------------------- Today's Observations: 7 A.M. Weather: Broken cirrocumulus, thin overcast cirrus, few altocumulus distant E-SSE Temperature: 68F; Dew Point: 63F; Relative Humidity: 84% Wind: WNW @ 7 kts Sea-level pressure: 1009.0 mb; 29.80 in. Hg; rising, then more slowly Visibility: 30 miles, hazy 6-hr Max temp: 73F 6-hr Min temp: 66F 24-hr Precip: 0.00 ins. BHO SA 1155 E200 BKN 250 -OVC 30 090/68/63/2907/980/ FEW BINOVC ALQDS FEW AC DSNT E-SSE HAZY/ 8/059 51004 10073 20066 10 A.M. Weather: Scattered altocumulus/castellanus, broken cirrocumulus, thin overcast cirrus, few breaks in overcast W-WNW   Temperature: 76F; Dew Point: 65F; Relative Humidity: 69% Wind: WNW @ 6 kts Sea-level pressure: 1008.8 mb; 29.79 in Hg; rising, then falling Visibility: 40 miles 3-hr Precip: 0.00 ins. BHO SA 1455 110 SCT 200 BKN 250 -OVC 40 088/76/65/2906/979/ FEW BINOVC W-NNW/ 8/089 58002 1 P.M. Weather: Broken altocumulus, thin broken cirrus, few cumulus all quadrants, clearing line W-N-NE moving ESE Temperature: 78F, Dew point: 62F; Relative Humidity: 58% Wind: W @ 8G16 kts Sea-level pressure: 1007.7 mb; 29.76 in Hg; falling, then more slowly Visibility: 60 miles 6-hr Max temp: 80F 6-hr Min temp: 68F 6-hr Precip: 0.00 ins. BHO SA 1755 E150 BKN 200 BKN 250 -BKN 60 077/78/62/2808G16/976/ FEW CU ALQDS CLRG LINE W-N-NE MVG ESE/ 8/258 56011 10080 20068 SUMMARY FOR MONDAY, AUGUST 30, 2021 TEMPERATURE (DEGREES F) MAX.......84     NORMAL.....78 MIN.......67     NORMAL.....61 MEAN......76     NORMAL.....69 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL........... +7 TOTAL DEPARTURE FOR THE MONTH.......................+68 [+2.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE........-1 TOTAL HEATING UNITS FOR THE MONTH................0  DEPARTURE.......-10 TOTAL HEATING UNITS FOR THE SEASON..............28  DEPARTURE.......+11 TOTAL HEATING UNITS LAST SEASON TO DATE..........3  DEPARTURE.......+25 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY...............11  DEPARTURE........+6 TOTAL COOLING UNITS FOR THE MONTH..............263  DEPARTURE.......+59 TOTAL COOLING UNITS FOR THE SEASON.............642  DEPARTURE.......+51 TOTAL COOLING UNITS LAST SEASON TO DATE........757  DEPARTURE......-115 PEAK WIND GUST (MPH):                      Official...................25 SW  @ 11:16 A.M.                      AEROVANE (south tower).....26 SW  @ 10:58 A.M.                      VECTOR #2 (south tower)....28     @  7:58 A.M.                      DAVIS #2 (south tower).....26 S   @  7:36 A.M.                      ASOS...........OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1......OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1.......OUT OF SERVICE D/T RENOVATIONS                      RMY............OUT OF SERVICE D/T RENOVATIONS                        MERLIN.........OUT OF SERVICE D/T RENOVATIONS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................21 SW  @ 11:19 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............20     @ 11:17 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............20 SW  @ 11:18 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE RMY AVERAGE........OUT OF SERVICE D/T RENOVATIONS AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL.......12.5 SSW [300 total miles]                      VECTOR #2.................13.2                      DAVIS #2..................12.8 SW                      RMY.................OUT OF SERVICE D/T RENOVATIONS                      ASOS................OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1...........OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1............OUT OF SERVICE D/T RENOVATIONS    PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.12 TOTAL PRECIPITATION FOR THE MONTH.............5.37  DEPARTURE....+1.57 TOTAL PRECIPITATION FOR THE YEAR.............40.34  DEPARTURE....+6.10 PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system 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 M:    Missing data 08/01   77/58/68/-5/T/589/68             23 SSW AERO 24 SSW RMY N/A 08/02   78/61/70/-3/T/821/95             28 WNW AERO 28 WNW RMY N/A 08/03   76/60/68/-5/0.00/302/35          15 N   AERO 16 N   RMY N/A 08/04   75/61/68/-5/0.71/077/09          21 ESE AERO 21 ESE RMY N/A 08/05   68/61/65/-8/1.68/000/00          28 NE  AERO 28 NE  RMY N/A 08/06   85/62/74/+1/0.00/727/85          19 S   AERO 20 WSW RMY N/A 08/07   88/66/77/+4/0.00/520/61          23 SW  AERO 23 SW  RMY N/A 08/08   80/67/74/+2/T/128/15             16 SW  AERO 16 WNW RMY N/A 08/09   75/64/70/-2/0.25/076/09          22 ENE AERO 21 NE  RMY N/A 08/10   78/63/71/-1/0.12/203/24          19 S   AERO 20 S   RMY N/A 08/11   89/70/80/+8/0.00/667/79          29 SSW AERO 28 SSW RMY N/A 08/12   91/71/81/+9/T/580/69             36 WSW AERO 37 WSW RMY N/A TSTM 08/13   92/73/83/+11/0.00/696/83         18 WSW AERO 18 WSW RMY N/A 08/14   87/69/78/+6/T/601/72             25 W   AERO 25 NNW RMY N/A 08/15   80/62/71/-1/0.00/800/96          19 NNW AERO 20 NNW RMY N/A 08/16   78/59/69/-3/0.00/564/68          15 S   AERO 15 S   RMY N/A 08/17   82/63/73/1/0.00/555/67           22 SSW AERO 23 SSW RMY N/A 08/18   86/66/76/+5/0.00/338/41          21 SSW AERO 22 SSW RMY N/A 08/19   81/69/75/+4/0.62/222/27          41 S   AERO 43 S   RMY N/A 08/20   78/70/74/+3/0.01/.../..          21 WSW AERO N/A    RMY N/A 08/21   86/69/78/+7/0.00/.../..          17 S   AERO 17 S   RMY N/A 08/22   74/66/70/-1/0.78/.../..          47 ESE AERO 48 ESE RMY N/A 08/23   83/68/76/+5/1.17/.../..          25 SSE AERO 26 SSE RMY N/A TSTM 08/24   86/67/77/+6/0.01/.../..          21 NNW AERO 21 NNW RMY N/A 08/25   89/70/80/+10/0.00/.../..         17 SW  AERO 18 SW  RMY N/A 08/26   92/72/82/+12/0.00/.../..         19 WSW AERO 18 WSW RMY N/A 08/27   89/70/80/+10/T/.../..            30 ENE AERO 30 ENE RMY N/A 08/28   70/59/65/-5/0.02/.../..          34 ENE AERO 34 ENE RMY N/A 08/29   72/59/66/-4/T/.../..             20 S   AERO 21 S   RMY N/A 08/30   84/67/76/+7/0.00/.../..          25 SW  AERO 26 SW  RMY N/A 08/31   The low since midnight is 66F, the daily normal low is 60F RECORDS FOR THE MONTH 08/22 NEW PEAK GUST RECORD OF 47 MPH,       BEATING THE OLD RECORD OF 44 MPH IN 1987 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) 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] RECORDS FOR SEPTEMBER 1 HIGH 93F IN 1969, 2010 LOW 47F IN 1975, 2017 PRECIP 2.32 INCHES IN 2013 PEAK GUST 59e MPH S IN 1945, SSW IN 1965 TODAY'S REPORT PREPARED BY: Matt Douglas