BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, DECEMBER 3, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0656E SUNSET:  1612E WIND PERSISTS, COLD RETURNS... Yesterday evening featured a potent cold front that rushed through the region just after 10 PM. Winds suddenly shifted from the SSW to WNW bringing with it a peak gust of 56 MPH! Surprising, only a  trace of rain was deposited in the gauge.  Since it's passing, temperatures have cooled off substantiality. After notching a 58 degree high yesterday, post-front temps find themselves in the mid to upper 30s...more normal for this time of year. Winds are breezy from the WNW averaging 20 MPH. Looking to the west of BHO, visibility is spectacular today. 80 to 85 miles has been the theme. The high so far today is 41F, which is 3 degrees below the normal  max of 44F. The low since midnight is 36F, 7 degrees above the  normal low of 29F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Broken Stratocumulus Temperature: 38F; Dew Point: 26F; Relative Humidity: 63% Wind: WNW @ 18G30 kts Peak Wind: 34 MPH (30 kts) WNW @ 6:54 AM Sea-level pressure: 1004.6 mb; 29.67 in. Hg: rising unsteadily Visibility: 80 miles 6-hr Max temp: 41F 6-hr Min temp: 38F 24-hr Precip:  Trace  24-hr Snowfall: 0.0 ins.  Snow Depth: 0 ins. BHO SA 1155 50 BKN 80 046/38/26/2918G30/967/ PK WND 2930/54/ 8/500 52032 70000 10041 20038 10 A.M. Weather: Scattered Cumulus Temperature: 38F; Dew Point: 22F; Relative Humidity: 53% Wind: NW @ 16G25 kts Sea-level pressure: 1008.3 mb; 29.78 in Hg; rising unsteadily Visibility: 80 miles 3-hr Precip: 0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 45 SCT 80 083/38/22/3116G25/978/ 8/100 52037 1 P.M. Weather: Scattered Cumulus (few altocumulus/altostratus SE-SW) Temperature: 38F, Dew point: 20F; Relative Humidity: 48% Wind: WNW @ 16G28 kts Peak Wind: 32 MPH (28 kts) WNW @ 12:54 PM Sea-level pressure: 1008.4 mb; 29.78 in Hg; falling, rising Visibility: 85 miles 6-hr Max temp: 41F 6-hr Min temp: 36F 6-hr Precip: 0.00 ins. 6-hr Snowfall: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 50 SCT 85 084/38/20/3016G28/978/ FEW AC/AS SE-SW PK WND 3028/54/ 8/130 53001 10041 20036 SUMMARY FOR THURSDAY, DECEMBER 2, 2021 TEMPERATURE (DEGREES F) MAX.......58     NORMAL.....44 MIN.......35     NORMAL.....29 MEAN......47     NORMAL.....37 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL............... +10 TOTAL DEPARTURE FOR THE MONTH........................... +10 [+4.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY...............18  DEPARTURE.......-11 TOTAL HEATING UNITS FOR THE MONTH...............46  DEPARTURE.......-11 TOTAL HEATING UNITS FOR THE SEASON............1053  DEPARTURE......-207 TOTAL HEATING UNITS LAST SEASON TO DATE.......1015  DEPARTURE...... +38 PEAK WIND GUST (MPH):                      Official (1-Sec AVG).......56 WNW @ 10:17 P.M.                      AEROVANE...................59 WNW @ 10:17 P.M.                      VECTOR #2 (Instantaneous)..68     @ 10:17 P.M.                      DAVIS #2 ..................54 WNW @ 10:14 P.M.                      RMY #2 (Instantaneous).....62 WNW @ 10:17 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..................40 WNW @ 10:16 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............39     @ 10:16 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............40 WNW @ 10:16 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE.................39 WNW @ 10:16 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.......17.4 SSW [417 total miles]                      VECTOR #2.................17.6                      DAVIS #2..................16.8 SSW                      RMY #2....................17.8 SSW                      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......TRACE  DEPARTURE.....-0.17 TOTAL PRECIPITATION FOR THE MONTH.............0.00  DEPARTURE.....-0.35 TOTAL PRECIPITATION FOR THE YEAR.............56.77  DEPARTURE.....+8.21 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M.............0.0  DEPARTURE......-0.3 TOTAL SNOWFALL FOR THE MONTH...................0.0  DEPARTURE......-0.4 TOTAL SNOWFALL FOR THE SEASON (2021-2022)......1.0  DEPARTURE......-1.9 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 11/01   59/41/50/+3/0.00/0.0/594/96      38 WNW AERO 39 WNW RMY 39 11/02   56/40/48/+1/0.00/0.0/247/40      25 SW  AERO 25 SW  RMY 26 11/03   51/35/43/-3/0.00/0.0/572/93      28 W   AERO 25 W   RMY 27      11/04   49/31/40/-6/0.00/0.0/446/73      17 NNE AERO 17 NNW RMY 16 11/05   49/32/41/-5/0.00/0.0/591/97      25 NW  AERO 24 NW  RMY 24 11/06   51/34/43/-2/0.00/0.0/595/98      18 SSW AERO 17 SW  RMY 19 11/07   55/37/46/+1/0.00/0.0/514/85      17 W   AERO 17 W   RMY 16 11/08   60/38/49/+4/0.00/0.0/578/96      20 N   AERO 18 N   RMY 19 11/09   69/45/57/+13/0.00/0.0/582/97     21 W   AERO 21 W   RMY 22 11/10   60/44/52/+8/0.00/0.0/389/65      36 NW  AERO 35 NW  RMY 35 11/11   56/40/48/+5/0.00/0.0/501/84      26 SE  AERO 28 SE  RMY 27 11/12   61/45/53/+10/1.00/0.0/000/00     72 SSE AERO 78 SSE RMY 76 11/13   60/36/48/+5/0.32/0.0/556/94      53 SW  AERO 53 SW  RMY 54 11/14   47/33/40/-2/0.03/0.0/336/57      29 W   AERO 28 W   RMY 28 11/15   48/36/42/0/0.07/0.0/405/69       35 W   AERO 36 W   RMY 38 11/16   46/31/39/-3/0.00/0.0/.../..      40 WNW AERO 41 WNW RMY 42 11/17   49/30/40/-1/0.00/0.0/.../..      34 S   AERO 36 S   RMY 34 11/18   69/49/59/+18/T/0.0/.../..        39 NW  AERO 36 WNW RMY 42 11/19   51/32/42/+1/0.29/0.0/.../..      42 W   AERO 41 W   RMY 41 11/20   45/27/36/-4/0.00/0.0/.../..      23 S   AERO 23 S   RMY 24 11/21   52/36/44/+4/T/0.0/.../..         35 S   AERO 35 S   RMY 36  11/22   55/33/44/+4/0.09/0.0/.../..      41 WSW AERO 41 WSW RMY 42 11/23   38/24/31/-8/0.00/0.0/.../..      36 NW  AERO 37 NW  RMY 37 11/24   41/22/32/-7/0.00/0.0/.../..      33 NW  AERO 32 NW  RMY 34 11/25   53/31/42/+3/0.00/0.0/.../..      21 WNW AERO 21 W   RMY 21 11/26   43/31/37/-1/0.11/0.9/.../..      39 WNW AERO 39 WNW RMY 41 11/27   37/24/31/-7/0.01/0.1/.../..      47 WNW AERO 45 WNW RMY 48 11/28   36/24/30/-8/T/T/.../..           22 W   AERO 21 W   RMY 23 11/29   39/25/32/-6/0.00/0.0/.../..      30 NW  AERO 28 NW  RMY 30 11/30   40/21/31/-6/0.00/0.0/.../..      27 WNW AERO 23 WSW RMY 26 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 12/01   44/30/37/0.00/0.0/.../..          35 W   AERO 35 W   RMY 34       12/02   58/35/47/10/T/0.0/.../..          56 WNW AERO 59 WNW RMY 62 12/03   The low since midnight is 36F, the daily normal low is 29F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR DECEMBER 3 HIGH 67 IN 2009 LOW  -1 IN 1890 PRECIP 2.10 INS. IN 1986 SNOWFALL 6.0 INS. IN 1963 PEAK GUST 73e MPH W IN 1942 RECORDS FOR DECEMBER 4 HIGH 67 IN 1998 LOW -4 IN 1940 PRECIP 1.87 INS. IN 1968 SNOWFALL 6.0 INS. IN 1907 PEAK GUST 73 MPH WNW IN 1980 TODAY'S REPORT PREPARED BY: Andrew Swanson