BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, DECEMBER 30, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0713E SUNSET:  1621E COLD AND FOGGY ATOP GREAT BLUE HILL.... Today was raw and cold with temps hanging in the mid 30's accompanied by fog and a very light drizzle. Visibility decreased from 15 miles this morning to a 1/16th mile as fog increased. Rainfall since the 7 A.M. observation is only 0.01 inches. The temperature varied very little today with a max of 39F and a minimum of 36F so far.   The high so far today is 37F, which is the same as the normal max. The low since midnight is 36F, which is 15 degrees above the normal low of 21F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Overcast stratus Temperature: 37F; Dew Point: 34F; Relative Humidity: 87% Wind: E @ 7 kts Sea-level pressure: 1014.9 mb; 29.97 in. Hg: rising then more slowly Visibility: 15 miles, thin fog 6-hr Max temp: 38F 6-hr Min temp: 36F 24-hr Precip:  0.01 ins. 24-hr Snowfall: Trace Snow Depth: 0 ins. BHO SA 1155 40 OVC 15 149/37/34/0907/997/ THN F ALQDS NEW SNW PST 24 HRS TRACE/ 8/6// 51005 70001 10038 20036 10 A.M. Weather: Overcast stratus, very light drizzle Temperature: 38F; Dew Point: 38F; Relative Humidity: 100% Wind: NE @ 7 kts   Sea-level pressure: 1014.7 mb; 29.97 in Hg; falling then rising Visibility: 1 mile, fog 3-hr Precip:  Trace 3-hr Snowfall: 0.0 ins. BHO SA 1455 15 OVC 1L-F 147/38/38/0407/997/ 8/6// 55002 6000/ 1 P.M. Weather: Fog and light drizzle Temperature: 37F, Dew point: 37F; Relative Humidity: 100% Wind: NE @ 4 kts, wind light and variable Sea-level pressure: 1013.1 mb; 29.92 in Hg; falling unsteadily Visibility: 1/16th mile, fog 6-hr Max temp: 39F 6-hr Min temp: 36F 6-hr Precip:   0.01 ins. 6-hr Snowfall: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 X W3 1/16L-F 131/37/37/0404/992/ WND L/V/ 8//// 57016 6001/ 10039 20036 SUMMARY FOR WEDNESDAY, DECEMBER 29, 2021 TEMPERATURE (DEGREES F) MAX.......40     NORMAL.....37 MIN.......32     NORMAL.....21 MEAN......36     NORMAL.....29 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL................+7 TOTAL DEPARTURE FOR THE MONTH...........................+105 [+3.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY...............29  DEPARTURE........-7 TOTAL HEATING UNITS FOR THE MONTH..............828  DEPARTURE......-106 TOTAL HEATING UNITS FOR THE SEASON............1835  DEPARTURE......-303 TOTAL HEATING UNITS LAST SEASON TO DATE.......1866 DEPARTURE........-31 PEAK WIND GUST (MPH):                      Official (1-Sec AVG).......13 WSW @ 12:31 P.M.                      AEROVANE...................12 WSW @ 12:30 P.M.                      VECTOR #2 (Instantaneous)..13     @ 12:31 P.M.                      DAVIS #2 ..................13 W   @ 12:31 P.M.                      RMY #2 (Instantaneous).....13 WSW @ 12:31 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...................7 WSW @ 12:30 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE...............9     @ 12:32 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE................9 WSW @ 12:32 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE..................9 WSW @ 12:32 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......3.3 ENE  [80 total miles]                      VECTOR #2................4.2                      DAVIS #2.................3.6 NE                      RMY #2...................4.2 NNE                      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.....-0.15 TOTAL PRECIPITATION FOR THE MONTH.............2.56  DEPARTURE.....-2.51 TOTAL PRECIPITATION FOR THE YEAR.............59.33  DEPARTURE.....+6.05 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M...........TRACE  DEPARTURE......-0.5 TOTAL SNOWFALL FOR THE MONTH...................1.7  DEPARTURE......-9.8 TOTAL SNOWFALL FOR THE SEASON (2021-2022)......2.7  DEPARTURE.....-11.3 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   44/30/37/0.00/0.0/263/47          35 W   AERO 35 W   RMY 34       12/02   58/35/47/10/T/0.0/106/19          56 WNW AERO 59 WNW RMY 62 TSTM 12/03   41/28/35/-1/0.00/0.0/512/92       46 NW  AERO 44 NW  RMY 46 12/04   39/25/32/-4/0.00/0.0/233/42       25 SW  AERO 23 SW  RMY 26 12/05   45/32/39/+3/0.00/0.0/460/83       25 SE  AERO 25 SE  RMY 25 12/06   59/37/48/+13/0.34/0.0/077/14      59 WNW AERO 59 NW  RMY 60 12/07   40/29/35/0/T/0.0/436/79           47 WNW AERO 36 WNW RMY 48 12/08   34/25/30/-5/0.05/0.6/000/00       26 NNE AERO 25 NE  RMY 26 12/09   35/20/28/-6/0.05/0.6/319/58       32 NW  AERO 30 NW  RMY 33 12/10   43/27/35/+1/0.00/0.0/000/00       21 SE  AERO 20 SE  RMY 21 12/11   62/37/50/+16/0.34/0.0/000/00      57 SSW AERO 59 SSW RMY 58 12/12   58/36/47/+13/0.05/0.0/416/76      55 WNW AERO 55 WNW RMY 58 12/13   50/35/43/+10/0.00/0.0/224/41      32 WSW AERO 33 WSW RMY 33 12/14   50/33/42/+9/0.00/0.0/442/81       31 WSW AERO 30 WSW RMY 32 12/15   42/28/35/+2/T/0.0/153/28          35 SSE AERO 35 SSE RMY 36 12/16   58/42/50/+18/0.21/0.0/016/03      35 SW  AERO 37 SW  RMY 38 12/17   56/39/48/+16/0.00/0.0/518/95      43 WNW AERO 41 WNW RMY 46 12/18   39/31/35/+3/0.52/0.2/000/00       21 NNW AERO 20 NNW RMY 20 12/19   39/20/30/-2/0.39/0.0/082/15       35 NNW AERO 37 NNW RMY 36 12/20   32/15/24/-7/0.00/0.0/528/97       29 SSW AERO 30 SSW RMY 30 12/21   40/27/34/+3/0.00/0.0/371/68       31 SW  AERO 32 SW  RMY 33 12/22   45/30/38/+7/0.10/0.0/038/07       47 NW  AERO 45 NW  RMY 47 12/23   30/21/26/-5/0.00/0.0/441/81       39 NW  AERO 38 NW  RMY 37 12/24   25/20/23/-7/0.01/0.1/000/00       14 N   AERO 13 N   RMY 14 12/25   34/25/30/0/0.34/0.0/000/00        20 NNW AERO 20 NNW RMY 18 12/26   37/30/34/+4/0.09/T/120/22         37 NW  AERO 37 NW  RMY 37 12/27   33/26/30/0/T/T/071/13             32 NW  AERO 35 NW  RMY 35 12/28   42/30/36/+7/..../0.1/.../..       34 NW  AERO 32 NW  RMY 35 12/29   40/32/36/+7/..../T/.../..         13 WSW AERO 12 WSW RMY 13 12/30 The low since midnight is 36F, the daily normal low is 21F DAILY RECORDS FOR DECEMBER 2021 12/16/21: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 42F           TIES PREVIOUS RECORD OF 42F SET IN 1982 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR DECEMBER 30 HIGH 60 IN 1984 LOW -18 IN 1933 PRECIP 1.54 INS. IN 1942 SNOWFALL 7.5 INS. IN 1956 PEAK GUST 81 MPH WNW IN 1962 RECORDS FOR DECEMBER 31 HIGH 62 IN 1965 LOW -12 IN 1917 PRECIP 0.96 INS. IN 1906 SNOWFALL 7.5 INS. IN 2008 PEAK GUST 78 MPH NW IN 1990 TODAY'S REPORT PREPARED BY: Benjamin Turner