BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, OCTOBER 23, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0607E SUNSET:  1652E DECREASING CLOUD COVER WITH EXCELLENT VISIBILITY IN THE MORNING HOURS.... Today we observed an excellent visibility of 85 miles, and almost overcast skies in the morning. Skies cleared up as the day went on, with scattered clouds being seen at the 1 P.M. observation. This is fair weather day with dew points in the lower 40's. Great hiking weather! The high so far today is 60F, a degree above the normal max of 59F. The low since midnight is 46F, 5 degrees above the normal low of 41F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Broken stratus, overcast altocumulus, break in overcast S-W-NNW Temperature: 46F; Dew Point: 39F; Relative Humidity: 75% Wind: N @ 8G14 kts Sea-level pressure: 1014.1 mb; 29.95 in. Hg: rising, then more rapidly Visibility: 85 miles 6-hr Max temp: 51F 6-hr Min temp: 46F 24-hr Precip: 0.00 ins. BHO SA 1155 20 BKN 80 OVC 85 141/46/39/3608G14/995/ BINOVC S-W-NNW/ 8/670 53010 10051 20046 10 A.M. Weather: Scattered stratocumulus, broken cirrocumulus Temperature: 53F; Dew Point: 43F; Relative Humidity: 68% Wind: N @ 4 kts, light and variable Sea-level pressure: 1014.1 mb; 29.95 in Hg; rising then falling Visibility: 80 miles, hazy 3-hr Precip: 0.00 ins. BHO SA 1455 20 SCT 250 BKN 80 141/53/43/3604/995/ WND L/V/ 8/809 50000 1 P.M. Weather: Scattered altocumulus, few cumulus Temperature: 59F, Dew point: 42F; Relative Humidity: 53% Wind: WNW @ 11G15 kts Sea-level pressure: 1012.3 mb; 29.89 in Hg; falling unsteadily Visibility: 80 miles, hazy 6-hr Max temp: 60F 6-hr Min temp: 46F 6-hr Precip: 0.00 ins. BHO SA 1755 80 SCT 80 123/59/42/3011G15/989/ FEW CU ALQDS 8/150 57018 10060 20046 SUMMARY FOR FRIDAY, OCTOBER 22, 2021 TEMPERATURE (DEGREES F) MAX.......71     NORMAL.....59 MIN.......51     NORMAL.....42 MEAN......61     NORMAL.....50 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL...............+11 TOTAL DEPARTURE FOR THE MONTH..........................+124 [+5.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................4  DEPARTURE.......-11 TOTAL HEATING UNITS FOR THE MONTH..............118  DEPARTURE......-128 TOTAL HEATING UNITS FOR THE SEASON.............192  DEPARTURE......-171 TOTAL HEATING UNITS LAST SEASON TO DATE........279  DEPARTURE.......-87 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE.........0 TOTAL COOLING UNITS FOR THE MONTH................3  DEPARTURE........-4 TOTAL COOLING UNITS FOR THE SEASON.............717  DEPARTURE.......+40 TOTAL COOLING UNITS LAST SEASON TO DATE........831  DEPARTURE......-114 PEAK WIND GUST (MPH):                      Official...................27 S   @  4:32 P.M.                      AEROVANE (south tower).....30 S   @  4:33 P.M.             VECTOR #2 (south tower)....29     @  4:32 P.M.                      DAVIS #2 (south tower).....34 S   @  4:07 P.M.                      RMY #2 (south tower).......29 S   @  4:32 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 #1.........OUT OF SERVICE D/T RENOVATIONS                        MERLIN.........OUT OF SERVICE D/T RENOVATIONS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................21 S   @  3:22 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............21     @  4:34 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............21 S   @  3:23 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE.................21 S   @  4:34 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 #1 AVERAGE.....OUT OF SERVICE D/T RENOVATIONS AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL........12.3 W [296 total miles]                      VECTOR #2..................13.2                      DAVIS #2...................13.0 WSW                      RMY #2.....................13.1 W                      RMY #1..............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....-0.18 TOTAL PRECIPITATION FOR THE MONTH.............2.42  DEPARTURE....-1.43 TOTAL PRECIPITATION FOR THE YEAR.............49.40  DEPARTURE....+7.14 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/-4/0.00/583/83          20 WNW AERO 20 WNW RMY N/A 10/02   73/47/60/+2/0.00/567/81          24 WSW AERO 23 WSW RMY N/A 10/03   65/55/60/+3/0.09/070/10          19 E   AERO 19 E   RMY N/A 10/04   59/51/55/-2/1.69/000/00          30 E   AERO 30 E   RMY N/A 10/05   58/50/54/-3/0.30/000/00          22 NNE AERO 23 NE  RMY N/A 10/06   69/50/60/+4/0.00/407/59          15 N   AERO 16 N   RMY N/A 10/07   73/55/64/+8/0.00/550/80          15 WSW AERO 15 W   RMY N/A 10/08   69/55/62/+7/T/616/90             24 ENE AERO 23 ENE RMY N/A 10/09   62/54/58/+3/0.01/273/40          23 E   AERO 23 E   RMY N/A 10/10   62/54/58/+3/T/000/00             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/+14/0.06/.../..         43 S   AERO 50 S   RMY 44 10/17   62/47/55/+3/0.25/.../..          32 WNW AERO 31 WNW RMY 31 10/18   60/42/51/-1/0.01/.../..          31 NW  AERO 32 NW  RMY 33 10/19   59/40/50/-1/0.00/.../..          35 WNW AERO 37 W   RMY 38 10/20   70/49/60/+9/0.00/.../..          23 W   AERO 23 W   RMY 23 10/21   74/56/65/+14/0.00/.../..         30 SSW AERO 32 S   RMY 32 10/22   71/51/61/+11/0.00/.../..         27 S   AERO 30 S   RMY 29 10/23   The low since midnight is 46F, the daily normal low is 41F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR OCTOBER 23 HIGH 82F IN 1947 LOW 24F IN 1969 PRECIP 3.66 INCHES IN 2014 SNOWFALL 3.0 INCHES IN 1891 PEAK GUST 78e MPH NW IN 1941 RECORDS FOR OCTOBER 24 HIGH 79F IN 1963 LOW 22F IN 1969 PRECIP 2.96 INCHES IN 1890 SNOWFALL 1.8 INCHES IN 1960 PEAK GUST 70 MPH SE IN 1959 TODAY'S REPORT PREPARED BY: Benjamin Turner