BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, OCTOBER 17, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0600E SUNSET:  1659E COOL AND BREEZY WITH FAIR WEATHER FOLLOWING SOME OVERNIGHT RAINFALL.... Today was partly cloudy with an average visibility of 75 miles. This was after overnight rain left 0.31 inches in the gauge after a dry streak. Areas in southeastern Massachusetts received much more in the way of rainfall. Conditions are breezy with an average wind speed of around 15 mph and a max gust of 26 mph. Wind has been northwesterly and cool all day. The high so far today is 62F, a degree above the normal max of 61F. The low since midnight is 50F, 6 degrees above the normal low of 44F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Clear, few stratocumulus Temperature: 50F; Dew Point: 48F; Relative Humidity: 93% Wind: WNW @ 11G17 kts Sea-level pressure: 1004.8 mb; 29.67 in. Hg: rising then steady Visibility: 80 miles 6-hr Max temp: 57F 6-hr Min temp: 50F 24-hr Precip: 0.31 ins. BHO SA 1155 CLR 80 048/50/48/3011G17/967/ FEW SC ALQDS/ 8/800 53007 70031 10057 20050 10 A.M. Weather: Clear, few cumulus, altocumulus, and cirrostratus Temperature: 57F; Dew Point: 48F; Relative Humidity: 71% Wind: WNW @ 14G24 kts Sea-level pressure: 1005.1 mb; 29.68 in Hg; rising, then more slowly Visibility: 75 miles 3-hr Precip: 0.00 ins. BHO SA 1455 CLR 75 051/57/48/2914G24/968/ FEW CU/AC/CS ALQDS/ 8/188 51003 1 P.M. Weather: Scattered cumulus and cirrostratus Temperature: 60F, Dew point: 44F; Relative Humidity: 55% Wind: NW @ 10G19 kts   Sea-level pressure: 1004.1 mb; 29.65 in Hg; falling unsteadily Visibility: 80 miles 6-hr Max temp: 62F 6-hr Min temp: 50F 6-hr Precip: 0.00 ins. BHO SA 1755 40 SCT 250 SCT 80 041/60/44/3110G19/965/ 8/105 57010 10062 20050 SUMMARY FOR SATURDAY, OCTOBER 16, 2021 TEMPERATURE (DEGREES F) MAX.......73     NORMAL.....61 MIN.......59     NORMAL.....44 MEAN......66     NORMAL.....52 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL..............+14 TOTAL DEPARTURE FOR THE MONTH..........................+89 [+5.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE.......-13 TOTAL HEATING UNITS FOR THE MONTH...............70  DEPARTURE.......-92 TOTAL HEATING UNITS FOR THE SEASON.............144  DEPARTURE......-136 TOTAL HEATING UNITS LAST SEASON TO DATE........217  DEPARTURE.......-84 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................1  DEPARTURE........+1 TOTAL COOLING UNITS FOR THE MONTH................3  DEPARTURE........-3 TOTAL COOLING UNITS FOR THE SEASON.............717  DEPARTURE.......+41 TOTAL COOLING UNITS LAST SEASON TO DATE........831  DEPARTURE......-114 PEAK WIND GUST (MPH):                      Official...................43 S   @  7:33 P.M.                      AEROVANE (south tower).....50 S   @  3:20 P.M.                      VECTOR #2 (south tower)....53     @  1:29 P.M.                      DAVIS #2 (south tower).....46 S   @  1:29 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..................34 S   @  2:34 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............32     @  2:39 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............32 S   @  7:35 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........19.1 S [459 total miles]                      VECTOR #2..................19.3                      DAVIS #2...................19.3 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.......0.31  DEPARTURE....+0.13 TOTAL PRECIPITATION FOR THE MONTH.............2.41  DEPARTURE....-0.32 TOTAL PRECIPITATION FOR THE YEAR.............49.39  DEPARTURE....+8.25 PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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 10/01   64/44/54/-4/0.00/.../..          20 WNW AERO 20 WNW RMY N/A 10/02   73/47/60/+2/0.00/.../..          24 WSW AERO 23 WSW RMY N/A 10/03   65/55/60/+3/0.09/.../..          19 E   AERO 19 E   RMY N/A 10/04   59/51/55/-2/1.69/.../..          30 E   AERO 30 E   RMY N/A 10/05   58/50/54/-3/0.30/.../..          22 NNE AERO 23 NE  RMY N/A 10/06   69/50/60/+4/0.00/.../..          15 N   AERO 16 N   RMY N/A 10/07   73/55/64/+8/0.00/.../..          15 WSW AERO 15 W   RMY N/A 10/08   69/55/62/+7/T/.../..             24 ENE AERO 23 ENE RMY N/A 10/09   62/54/58/+3/0.01/.../..          23 E   AERO 23 E   RMY N/A 10/10   62/54/58/+3/T/.../..             22 E   AERO 21 E   RMY N/A 10/11   67/56/62/+8/0.01/.../..          20 NE  AERO 21 NE  RMY N/A 10/12   72/54/63/+9/0.00/.../..          15 SW  AERO 15 SW  RMY N/A 10/13   75/55/65/+11/0.00/.../..         18 SW  AERO 18 SW  RMY N/A 10/14   73/56/65/+12/0.00/.../..         19 N   AERO 20 N   RMY N/A 10/15   74/55/67/+14/0.00/.../..         24 S   AERO 24 SSW RMY N/A 10/16   73/59/66/+14/..../.../..         43 S   AERO 50 S   RMY 44 10/17   The low since midnight is 50F, the daily normal low is 44F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR OCTOBER 17 HIGH 86F IN 1947 LOW 25F IN 1886 PRECIP 1.87 INCHES IN 1989 SNOWFALL TRACE IN 1970 PEAK GUST 61 MPH E IN 2019 RECORDS FOR OCTOBER 18 HIGH 82F IN 1908 LOW 26F IN 1939 PRECIP 2.79 INCHES IN 1975 SNOWFALL 3.0 INCHES IN 2009 PEAK GUST 66 MPH S IN 1967 TODAY'S REPORT PREPARED BY: Benjamin Turner