BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, SEPTEMBER 22, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0532E SUNSET:  1741E   MOSTLY CLOUDY WITH A COOL SOUTHERLY BREEZE.... Today we observed mostly cloudy skies and a max visibility of 45 miles. Wind was a factor today, with an average speed above 10 mph and a max gust of almost 30 mph. The summit was humid for most of the day, with an average humidity around 86%. Dew points hung around in the mid to upper 60's. Light rain started a half hour before the 1 P.M. observation and left 0.01 inches in the gauge. The high so far today is 75F, 5 degrees above the normal max of 70F. The low since midnight is 65F, 12 degrees above the normal low of 53F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Scattered stratocumulus, broken altocumulus and cirrus Temperature: 67F; Dew Point: 63F; Relative Humidity: 90% Wind: SSE @ 13G23 kts Sea-level pressure: 1023.8 mb; 30.23 in. Hg; falling, then more slowly Visibility: 35 miles, hazy   6-hr Max temp: 67F 6-hr Min temp: 65F 24-hr Precip: 0.00 ins. BHO SA 1155 30 SCT 75 BKN 250 BKN 35 238/67/63/1513G23/023/ HAZY/ 8/871 56006 10067 20065 10 A.M. Weather: Broken stratocumulus and cirrus Temperature: 73F; Dew Point: 66F; Relative Humidity: 78% Wind: S @ 14G22 kts Sea-level pressure: 1023.0 mb; 30.21 in Hg; falling steadily Visibility: 45 miles   3-hr Precip: 0.00 ins. BHO SA 1455 30 BKN 250 BKN 45 230/73/66/1814G22/021/ 8/801 58008 1 P.M. Weather: Overcast stratus, light rain beginning around 12:30 P.M. Temperature: 71F, Dew point: 69F; Relative Humidity: 94% Wind: S @ 10G20 kts Sea-level pressure: 1021.2 mb; 30.15 in Hg; falling, then more slowly Visibility: 20 miles, thin fog 6-hr Max temp: 75F 6-hr Min temp: 67F 6-hr Precip: 0.01 ins. BHO SA 1755 30 OVC 20R- 212/71/69/1810G20/015/ R-B30 THN F ALQDS/ 8/6// 600// 56018 10075 20067 SUMMARY FOR TUESDAY, SEPTEMBER 21, 2021 TEMPERATURE (DEGREES F) MAX.......75     NORMAL.....71 MIN.......55     NORMAL.....54 MEAN......65     NORMAL.....62 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL.............+3 TOTAL DEPARTURE FOR THE MONTH.........................+11 [+0.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE........-4 TOTAL HEATING UNITS FOR THE MONTH...............15  DEPARTURE.......-32 TOTAL HEATING UNITS FOR THE SEASON..............43  DEPARTURE.......-22 TOTAL HEATING UNITS LAST SEASON TO DATE.........82  DEPARTURE.......-39 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE........-2 TOTAL COOLING UNITS FOR THE MONTH...............44  DEPARTURE.......-21 TOTAL COOLING UNITS FOR THE SEASON.............694  DEPARTURE.......+33 TOTAL COOLING UNITS LAST SEASON TO DATE........807  DEPARTURE......-113 PEAK WIND GUST (MPH):                      Official...................19 SSE @  9:54 P.M.                      AEROVANE (south tower).....20 SSE @  9:52 P.M.                      VECTOR #2 (south tower)....21     @  8:34 P.M.                      DAVIS #2 (south tower).....22 S   @ 11:09 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..................15 SSE  @  9:54 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............15      @  9:22 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............15 SSE  @  9:22 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.......8.6 SSE [206 total miles]                      VECTOR #2.................9.1                      DAVIS #2..................8.8 SSE                      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....-0.15 TOTAL PRECIPITATION FOR THE MONTH.............5.52  DEPARTURE....+2.81 TOTAL PRECIPITATION FOR THE YEAR.............45.86  DEPARTURE....+8.80 PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 09/01   68/56/62/-7/1.47/000/00          34 NNE AERO 37 NNE RMY N/A     09/02   71/55/63/-6/2.53/322/41          49 ENE AERO 52 ENE RMY N/A 09/03   72/52/62/-6/0.00/735/94          23 NW  AERO 23 NW  RMY N/A 09/04   76/55/66/-2/0.00/757/97          22 WNW AERO 21 WNW RMY N/A 09/05   72/60/66/-2/0.04/008/01          27 S   AERO 29 S   RMY N/A 09/06   80/61/71/+3/0.00/.../..          24 WNW AERO 25 WNW RMY N/A 09/07   78/57/68/+1/0.00/.../..          23 WSW AERO 22 WSW RMY N/A 09/08   81/61/71/+4/0.00/.../..          43 S   AERO 45 S   RMY N/A 09/09   71/64/68/+1/0.90/.../..          33 S   AERO 36 S   RMY N/A 09/10   74/55/65/-1/0.04/.../..          31 NW  AERO 32 WNW RMY N/A 09/11   75/51/63/-3/0.00/.../..          24 SW  AERO 24 SW  RMY N/A 09/12   79/60/70/+4/0.00/.../..          33 SW  AERO 32 SW  RMY N/A 09/13   77/62/70/+5/0.06/.../..          22 NW  AERO 23 NW  RMY N/A 09/14   75/59/67/+2/0.00/.../..          23 S   AERO 25 S   RMY N/A 09/15   82/65/74/+9/T/.../..             32 SSW AERO 35 SSW RMY N/A 09/16   69/61/65/+1/0.27/.../..          24 ENE AERO 24 ENE RMY N/A TSTM       09/17   66/60/63/-1/0.02/.../..          22 NE  AERO 23 NE  RMY N/A 09/18   74/62/68/+5/0.04/.../..          17 WNW AERO 18 WNW RMY N/A TSTM 09/19   71/57/64/+1/0.15/.../..          23 NNE AERO 24 NNE RMY N/A 09/20   71/55/63/0/0.00/.../..           20 SE  AERO 20 SE  RMY N/A 09/21   75/55/65/+3/0.00/.../..          19 SSE AERO 20 SSE RMY N/A 09/22   The low since midnight is 65F, the daily normal low is 53F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR SEPTEMBER 22 HIGH 90F IN 1895, 1914 LOW 30F IN 1904 (Earliest freeze) PRECIP 1.16 INCHES IN 2001 PEAK GUST 60 MPH SSW IN 1989 RECORDS FOR SEPTEMBER 23 HIGH 93F IN 1895,1914 LOW 33F IN 1904 PRECIP 2.67 INCHES IN 1994 PEAK GUST 62 MPH SSW IN 1989 TODAY'S REPORT PREPARED BY: Benjamin Turner