BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, SEPTEMBER 17, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0527E SUNSET:  1750E   GLOOMY WEATHER CONTINUES... Not a whole lot of change has occurred here since yesterday. If any difference, temperatures a slightly cooler- hanging out in the low 60s compared to the upper 60s experienced yesterday. The summit is socked in fog with a peak visibility of only 5 miles. No bright sunshine recorded on the sun card thus far today. The clouds have not precipitated anything measurable. We recorded 0.03 inches for the 24-hour total ending today at 0700E, and only a Trace through 1PM. Winds are unremarkable and remain out of the NE/ENE. The high so far today is 66F, this is 6 degrees below the daily normal maximum of 72F. The low so far today is 60F, which is 5 degrees above the daily normal minimum of 55F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Sky Obscured, Vertical Visibility 200 feet, Fog Temperature: 62F; Dew Point: 62F; Relative Humidity: 100% Wind: NE @ 10G17 kts Sea-level pressure: 1028.2 mb; 30.36 in. Hg; rising unsteadily Visibility: 1/8 mile, fog   6-hr Max temp: 62F 6-hr Min temp: 60F 24-hr Precip: 0.03 ins. BHO SA 1155 X W2 1/8F 282/62/62/041017/036/ 8//// 52010 70003 10062 20060 10 A.M. Weather: Sky Obscured, Vertical Visibility 200 feet, Fog Temperature: 62F; Dew Point: 62F; Relative Humidity: 100% Wind: ENE @ 10G19 kts Sea-level pressure: 1028.1 mb; 30.36 in Hg; rising, then falling Visibility: 1/8 mile, fog   3-hr Precip: Trace BHO SA 1455 X W2 1/8F 281/62/62/0610G19/036/ 8//// 58001 6000/ 1 P.M. Weather: Overcast Stratus, Fog Temperature: 64F, Dew point: 62; Relative Humidity: 93% Wind: ENE @ 10G16 kts Sea-level pressure: 1026.1 mb; 30.30 in Hg; falling, then falling more rapidly Visibility: 5 miles 6-hr Max temp: 66F 6-hr Min temp: 62F 6-hr Precip: Trace BHO SA 1755 90 OVC 5F 263/64/62/0610G16/031/ 8/6// 58018 6000/ 10066 20062 SUMMARY FOR THURSDAY, SEPTEMBER 16, 2021 TEMPERATURE (DEGREES F) MAX.......69     NORMAL.....73 MIN.......61     NORMAL.....56 MEAN......65     NORMAL.....64 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL.............+1 TOTAL DEPARTURE FOR THE MONTH.........................+3 [-0.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE........-3 TOTAL HEATING UNITS FOR THE MONTH...............10  DEPARTURE.......-18 TOTAL HEATING UNITS FOR THE SEASON..............38  DEPARTURE........-8 TOTAL HEATING UNITS LAST SEASON TO DATE.........29  DEPARTURE........+9 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE........-2 TOTAL COOLING UNITS FOR THE MONTH...............41  DEPARTURE.......-15 TOTAL COOLING UNITS FOR THE SEASON.............691  DEPARTURE.......+40 TOTAL COOLING UNITS LAST SEASON TO DATE........805  DEPARTURE......-114 PEAK WIND GUST (MPH):                      Official...................24 ENE @  2:51 P.M.                      AEROVANE (south tower).....24 ENE @  2:51 P.M.                      VECTOR #2 (south tower)....26     @  2:51 P.M.                      DAVIS #2 (south tower).....23 NE  @  2:18 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..................16 NE   @  2:20 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............17      @  2:15 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............17 ENE  @  2:16 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 *LAST OF TWO OCCURRENCES AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL.......8.3 NE   [200 total miles]                      VECTOR #2.................9.1                      DAVIS #2..................8.9 ENE                      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.......0.03  DEPARTURE....-0.12 TOTAL PRECIPITATION FOR THE MONTH.............5.31  DEPARTURE....+3.34 TOTAL PRECIPITATION FOR THE YEAR.............45.65  DEPARTURE....+9.33 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 RMU N/A       09/17   The low since midnight is 60F, the daily normal low is 55F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR SEPTEMBER 17 HIGH 87F IN 2015 LOW 38F IN 1959 PRECIP 2.73 INCHES IN 1933 PEAK GUST 60 MPH WNW IN 1999 RECORDS FOR SEPTEMBER 18 HIGH 88F IN 1906 LOW 36F IN 1919 PRECIP 4.25 INCHES IN 1996 PEAK GUST 77e MPH WNW IN 1948 TODAY'S REPORT PREPARED BY: Andrew Swanson