BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, OCTOBER 18, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0601E SUNSET:  1657E FAIR WEATHER WITH A COOL BREEZE AFTER SOME OVERNIGHT RAINFALL.... A few showers moved through during the wee hours of the morning amounting to 0.01" of rainfall. Otherwise it's been a fair weather day with a few clouds decorating the sky. A busy west-northwest wind has been blowing all day averaging around 13 mph with a peak gust thus far of 29 mph. The wind, along with a dew point in the mid-upper 30s is adding a chill to the air, finally feeling like fall here at Blue Hill! Visibility has been excellent, holding at around 80 miles all day. The high so far today is 60F, equal to the normal max of 60F. The low since midnight is 45F, 2 degrees above the normal low of 43F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Clear, few stratocumulus all quadrants, few altocumulus overhead-N-E-SE, few cirrus distant N-ESE Temperature: 45F; Dew Point: 41F; Relative Humidity: 86% Wind: WNW @ 11G17 kts Sea-level pressure: 1007.2 mb; 29.74 in. Hg: rising, then more rapidly Visibility: 80 miles 6-hr Max temp: 47F 6-hr Min temp: 45F 24-hr Precip: 0.01 ins. BHO SA 1155 CLR 80 072/45/41/2911G17/974/ FEW SC ALQDS FEW AC OVHD-N-E-SE FEW CI DSNT N-ESE/ 8/571 53009 6001/ 70001 10047 20045 10 A.M. Weather: Scattered stratocumulus, scattered altocumulus, thin scattered cirrus Temperature: 52F; Dew Point: 37F; Relative Humidity: 56% Wind: WNW @ 13G20 kts Sea-level pressure: 1007.0 mb; 29.74 in Hg; rising, then falling Visibility: 80 miles 3-hr Precip: 0.00 ins. BHO SA 1455 45 SCT 120 SCT 250 -SCT 80 070/52/37/3013G20/974/ 8/571 58002 1 P.M. Weather: Scattered stratocumulus, thin scattered cirrus Temperature: 59F, Dew point: 36F; Relative Humidity: 41% Wind: NW @ 10G23 kts   Sea-level pressure: 1006.1 mb; 29.71 in Hg; falling, then steady Visibility: 80 miles 6-hr Max temp: 60F 6-hr Min temp: 45F 6-hr Precip: 0.00 ins. BHO SA 1755 45 SCT 250 -SCT 80 061/59/36/3010G23/971/ 8/501 56009 10060 20045 SUMMARY FOR SUNDAY, OCTOBER 17, 2021 TEMPERATURE (DEGREES F) MAX.......62     NORMAL.....61 MIN.......47     NORMAL.....44 MEAN......55     NORMAL.....52 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL.............. +3 TOTAL DEPARTURE FOR THE MONTH..........................+92 [+5.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY...............10  DEPARTURE........-3 TOTAL HEATING UNITS FOR THE MONTH...............80  DEPARTURE.......-95 TOTAL HEATING UNITS FOR THE SEASON.............154  DEPARTURE......-139 TOTAL HEATING UNITS LAST SEASON TO DATE........245  DEPARTURE.......-91 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........-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...................32 WNW @ 11:47 A.M.                      AEROVANE (south tower).....31 WNW @ 11:47 A.M.                      VECTOR #2 (south tower)....35     @ 11:47 A.M.                      DAVIS #2 (south tower).....31 WNW @ 11:47 A.M.                      RMY #2 (south tower).......31 WNW @ 11:47 A.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..................24 WNW @ 11:31 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............23     @ 11:48 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............23 WNW @ 11:16 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE.................23 WNW @ 11:15 A.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........11.7 WNW [281 total miles]                      VECTOR #2..................12.5                      DAVIS #2...................12.4 NW                      RMY #2.....................12.3 WNW                      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.......0.01  DEPARTURE....-0.18 TOTAL PRECIPITATION FOR THE MONTH.............2.42  DEPARTURE....-0.50 TOTAL PRECIPITATION FOR THE YEAR.............49.40  DEPARTURE....+8.07 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   The low since midnight is 45F, the daily normal low is 43F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) 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 RECORDS FOR OCTOBER 19 HIGH 81F IN 1945 LOW 21F IN 1922 PRECIP 3.64 INCHES IN 1932 SNOWFALL 1.0 INCHES IN 1972 PEAK GUST 66 MPH SSW IN 1967 TODAY'S REPORT PREPARED BY: Matt Douglas