BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, AUGUST 12, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0448E SUNSET:  1849E HOTTER THAN IT WAS YESTERDAY WITH ABOUT THE SAME DEW POINTS.... Today is again very hot and humid with dew points hanging in the low 70's. Hiking today is not recommended, and a heat advisory was given out by the National Weather Service for most of the region until Friday night. Visibility was limited to around 40 miles for most of the day, with a max of 45 miles being seen at the 1 P.M. observation. There is also an air quality alert for the area! The wind has shifted more westerly today, with an average speed of 10 mph and a max gust around 22 mph.   The high so far today is 89F, 8 degrees above the daily normal maximum of 81F. The low so far today is 71F, which is 8 degrees above the daily normal minimum of 63F. ----------------------------------------------- PRELIMINARY STATS FOR JULY 2021 TEMPERATURE, Deg. F Avg. Max. 76.3 [-5.4] Avg. Min. 60.4 [-2.5] Mean      68.8 [-3.9] 24-hour corrected mean: 67.9 Max. for month: 90F on the 16th Min. for month: 52F on the 31st HEATING DEGREE DAYS Total heating units:     28 [+21] Total for the season:    28 [+21] Total for last season:    1 COOLING DEGREE DAYS Total cooling units:     153 [-95] Total for the season:    379 [-8] Total for last season:   487 PRECIPITATION, Inches Total: 11.59 [+8.12] Greatest in 24 hrs: 3.09 on the 9-10th WIND, mph Avg. uncorrected wind speed:  9.0 mph Avg. corrected wind speed:    9.7 mph Prevailing wind direction:   NE [14%] Peak gust and direction:     63 NW on the 7th SUNSHINE: Campbell-Stokes card minutes: 11574 minutes of a possible 26682 or 43% Astronomical total minutes: 12005 minutes of a possible 27732 or 43% ----------------------------------------------- Today's Observations: 7 A.M. Weather: Broken altocumulus and cirrocumulus, breaks in overcast W-N-NE Temperature: 73F; Dew Point: 71F; Relative Humidity: 94% Wind: SSW @ 7 kts Sea-level pressure: 29.99 in. Hg; rising steadily Visibility: 25 miles, thin fog 6-hr Max temp: 73F 6-hr Min temp: 71F 24-hr Precip: 0.00 ins. BHO SA 1155 140 BKN 250 BKN 25 156/73/71/2207/999/ THN F ALQDS BINOVC W-N-NE/ 8/079 53007 10073 20071 10 A.M. Weather: Scattered altocumulus and altostratus, broken cirrocumulus Temperature: 82F; Dew Point: 72F; Relative Humidity: 60% Wind: W @ 10 kts Sea-level pressure: 29.98 in Hg; falling unsteadily Visibility: 40 miles 3-hr Precip: 0.00 ins. BHO SA 1455 140 SCT 250 BKN 40 154/82/72/2710/998/ 8/086 56002 1 P.M. Weather: Scattered altocumulus and cirrostratus, few cumulus Temperature: 89F, Dew point: 73F; Relative Humidity: 66% Wind: WSW @ 9G18 Sea-level pressure: 29.97 in Hg; falling steadily Visibility: 45 miles 6-hr Max temp: 89F 6-hr Min temp: 73F 6-hr Precip: 0.00 ins. BHO SA 1755 140 SCT 250 BKN 45 150/89/73/2409G18/997/ FEW CU ALQDS/ 8/186 58004 10089 20073 SUMMARY FOR WEDNESDAY, AUGUST 11, 2021 TEMPERATURE (DEGREES F) MAX.......89     NORMAL.....81 MIN.......70     NORMAL.....63 MEAN......80     NORMAL.....72 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL...........+8 TOTAL DEPARTURE FOR THE MONTH......................-14 [-1.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE.........0 TOTAL HEATING UNITS FOR THE MONTH................0  DEPARTURE........-2 TOTAL HEATING UNITS FOR THE SEASON..............28  DEPARTURE.......+19 TOTAL HEATING UNITS LAST SEASON TO DATE..........1  DEPARTURE.......+27 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY...............15  DEPARTURE........+8 TOTAL COOLING UNITS FOR THE MONTH...............70  DEPARTURE.......-15 TOTAL COOLING UNITS FOR THE SEASON.............449  DEPARTURE.......-23 TOTAL COOLING UNITS LAST SEASON TO DATE........628  DEPARTURE......-179 PEAK WIND GUST (MPH):                      Official...................29 SSW @  2:36 P.M.                      AEROVANE (south tower).....28 SSW @  2:38 P.M.                      VECTOR #2 (south tower)....29     @  2:36 P.M.                      DAVIS #2 (south tower).....27 SW  @  2:37 P.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..................20 SSW @  2:36 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............21     @  2:20 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............20 SW  @  2:21 P.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......12.6 SSW [162 total miles]                      VECTOR #2................13.3                      DAVIS #2.................12.6 SSW                      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....-0.13 TOTAL PRECIPITATION FOR THE MONTH.............2.76  DEPARTURE....+1.31 TOTAL PRECIPITATION FOR THE YEAR.............37.73  DEPARTURE....+5.84 PRELIMINARY CLIMATE SUMMARY FOR JULY 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 07/01   80/65/73/+2/0.74/155/17           22 W   AERO 20 WSW  RMY 21 07/02   65/55/60/-11/1.49/000/00          37 NE  AERO 36 NE   RMY 39 07/03   56/54/55/-17/1.98/000/00          41 NE  AERO 44 NE   RMY 45 TSTM 07/04   66/54/60/-12/0.16/191/21          26 ENE AERO 23 ENE  RMY 26 07/05   74/53/64/-8/0.01/546/60           26 SSW AERO 28 SSW  RMY 27 07/06   87/66/77/+5/0.26/255/28           37 W   AERO 48 W    RMY 38 TSTM 07/07   88/88/77/+5/0.77/699/77           63 NW  AERO 75 NW   RMY 70 TSTM 07/08   67/59/63/-9/0.38/109/12           46 W   AERO 46 W    RMY 51 TSTM 07/09   73/62/68/-5/3.02/163/18           40 WNW AERO 44 WNW  RMY 43 07/10   71/63/67/-6/0.07/109/12           23 NE  AERO 21 NNE  RMY 22 07/11   81/61/71/-2/T/325/36              21 SW  AERO 19 S    RMY N/A 07/12   67/61/64/-9/1.01/000/00           31 ENE AERO 31 ENE  RMY N/A 07/13   66/60/63/-10/0.02/000/00          19 E   AERO 18 E    RMY N/A 07/14   80/62/71/-2/0.01/216/24           19 S   AERO 18 S    RMY N/A 07/15   88/67/78/+5/0.00/844/94           19 WSW AERO 18 SSW  RMY N/A 07/16   90/70/80/+7/0.04/609/68           36 NNW AERO 39 NNW  RMY N/A TSTM 07/17   78/64/71/-2/0.34/394/44           26 ENE AERO 25 ENE  RMY N/A TSTM 07/18   74/63/69/-4/0.15/000/00           22 NE  AERO 22 NE   RMY N/A TSTM 07/19   71/63/67/-6/0.07/027/03           17 ENE AERO 17 ENE  RMY N/A 07/20   83/64/74/+1/0.00/730/82           23 NW  AERO 23 NW   RMY N/A 07/21   79/62/71/-2/0.16/577/65           26 NNW AERO 23 NNW  RMY N/A TSTM 07/22   79/58/69/-4/T/656/74              20 WNW AERO 20 WNW  RMY N/A 07/23   79/62/71/-2/0.00/708/80           22 S   AERO 21 S    RMY N/A TSTM 07/24   78/59/69/-4/0.00/830/94           19 S   AERO 18 S    RMY N/A 07/25   71/64/68/-5/0.08/009/01           40 SSW AERO 41 SSW  RMY N/A 07/26   87/67/77/+4/0.01/765/87           27 WSW AERO 25 WNW  RMY N/A 07/27   87/65/76/+3/0.56/754/86           55 NW  AERO 58 NW   RMY N/A TSTM 07/28   72/61/67/-6/0.06/446/51           18 NNE AERO 18 NNE  RMY N/A 07/29   77/61/69/-4/0.19/323/37           39 S   AERO 40 S    RMY N/A 07/30   78/58/68/-5/0.01/714/82           31 NW  AERO 31 NW   RMY N/A 07/31   74/52/63/-10/0.00/851/98          24 WNW AERO 25 WNW  RMY N/A RECORDS FOR JULY: JULY 2: Record daily precipitation of 1.49",         Surpasses previous record of 1.42" set in 1986 JULY 3: Record daily precipitation of 1.98",         Surpasses previous record of 1.36" set in 1985 JULY 7: Record peak gust of 63 MPH,         Surpasses previous record of 55 MPH set in 1989 JULY 2021: New record for number of days with measurable precipitation            with 24 days. Beating the previous record of 20 in 1906            This is also the record for ANY month, beating the previous            record of 22 in December 1972 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/.../..             23 SSW AERO 24 SSW RMY N/A 08/02   78/61/70/-3/T/.../..             28 WNW AERO 28 WNW RMY N/A 08/03   76/60/68/-5/0.00/.../..          15 N   AERO 16 N   RMY N/A 08/04   75/61/68/-5/0.71/.../..          21 ESE AERO 21 ESE RMY N/A 08/05   68/61/65/-8/1.68/.../..          28 NE  AERO 28 NE  RMY N/A 08/06   85/62/74/+1/0.00/.../..          19 S   AERO 20 WSW RMY N/A 08/07   88/66/77/+4/0.00/.../..          23 SW  AERO 23 SW  RMY N/A 08/08   80/67/74/+2/T/.../..             16 SW  AERO 16 WNW RMY N/A 08/09   75/64/70/-2/0.25/.../..          22 ENE AERO 21 NE  RMY N/A 08/10   78/63/71/-1/..../.../..          19 S   AERO 20 S   RMY N/A 08/11   89/70/80/+8/..../.../..          29 SSW AERO 28 SSW RMY N/A 08/12   The low since midnight is 71F, the daily normal low is 63F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR AUGUST 12 HIGH 99F IN 1944 LOW 48F IN 1930 PRECIP 1.89 INCHES IN 1979 PEAK GUST 50 MPH NE IN 1983 RECORDS FOR AUGUST 13 HIGH 98F IN 1944, 2002 LOW 47F IN 1902, 1957 PRECIP 2.92 INCHES IN 1989 PEAK GUST 52 MPH SSE IN 1963 TODAY'S REPORT PREPARED BY: Benjamin Turner