BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, DECEMBER 26, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0712E SUNSET:  1618E MORE ICING OBSERVED OVERNIGHT, CLOUDY BUT A BIT DRIER TODAY.... Light rain and drizzle last evening became freezing drizzle/rain as the temperature snuck just below freezing. Several hours of light freezing rain occurred before ending as a period of light snow around 5am. 0.10" of ice accretion was measured this morning, but only a trace of snow. Somewhat drier air has moved into the area, at the very least we're no longer in the fog. Visibility has slowly improved to around 50 miles, but the sky remains on the cloudy side. The wind has gotten busier as the day has progressed gusting over 30 mph at times early this afternoon. The average speed for the day has bumped up to around 10mph. The high so far today is 37F, which is 1 degree below the normal max of 38F. The low since midnight is 31F, which is 9 degrees above the normal low of 22F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Partially obscured, overcast stratus Temperature: 32F; Dew Point: 32F; Relative Humidity: 100% Wind: NNW @ 7 kts Sea-level pressure: 1005.0 mb; 29.68 in. Hg: rising, then more rapidly Visibility: 1/4 mile, freezing fog 6-hr Max temp: 32F 6-hr Min temp: 31F 24-hr Precip:  0.43 ins. 24-hr Snowfall: Trace Snow Depth: 0 ins. BHO SA 1155 -X E35 OVC 1/4ZF 050/32/32/3407/968/ TOTAL ICE ACC PST 24 HRS 0.10 INS TOTAL NEW SNW PST 24 HRS TRACE/ 8/6// 53017 6008/ 70043 10032 20031 10 A.M. Weather: Scattered stratocumulus, broken altocumulus   Temperature: 35F; Dew Point: 33F; Relative Humidity: 92% Wind: NW @ 11G17 kts   Sea-level pressure: 1008.4 mb; 29.78 in Hg; rising, then more slowly Visibility: 40 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 12 SCT E65 BKN 40 084/35/33/3211G17/978/ 8/550 51034 1 P.M. Weather: Scattered stratocumulus, overcast stratocumulus Temperature: 35F, Dew point: 32F; Relative Humidity: 88% Wind: NW @ 15G24 kts, peak wind NW 36 mph at 12:20 P.M. Sea-level pressure: 1008.9 mb; 29.79 in Hg; rising, then more slowly Visibility: 50 miles 6-hr Max temp: 37F 6-hr Min temp: 32F 6-hr Precip:   0.00 ins. 6-hr Snowfall: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 20 SCT E30 OVC 50 089/35/32/3115G24/979/ PK WND 3131/20/ 8/5// 51005 10037 20032 SUMMARY FOR SATURDAY, DECEMBER 25, 2021 TEMPERATURE (DEGREES F) MAX.......34     NORMAL.....38 MIN.......25     NORMAL.....22 MEAN......30     NORMAL.....30 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL...............  0 TOTAL DEPARTURE FOR THE MONTH...........................+87 [+3.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY...............35  DEPARTURE........ 0 TOTAL HEATING UNITS FOR THE MONTH..............704  DEPARTURE.......-88 TOTAL HEATING UNITS FOR THE SEASON............1711  DEPARTURE......-284 TOTAL HEATING UNITS LAST SEASON TO DATE.......1734 DEPARTURE........-23 PEAK WIND GUST (MPH):                      Official (1-Sec AVG).......20 NNW @ 11:20 P.M.                      AEROVANE...................20 NNW @ 11:07 P.M.                      VECTOR #2 (Instantaneous)..19     @ 11:20 P.M.                      DAVIS #2 ..................17 NE  @  2:00 P.M.                      RMY #2 (Instantaneous).....18 NE  @  2:14 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..................16 NNW @ 11:25 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............15     @ 11:39 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............15 ENE @  2:07 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE.................15 NE  @  2:07 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..... 8.5 NNW  [204 total miles]                      VECTOR #2............... 9.0                      DAVIS #2................ 8.6 NNE                      RMY #2.................. 8.6 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.......0.43  DEPARTURE.....+0.26 TOTAL PRECIPITATION FOR THE MONTH.............2.49  DEPARTURE.....-1.94 TOTAL PRECIPITATION FOR THE YEAR.............59.26  DEPARTURE.....+6.62 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M...........TRACE  DEPARTURE......-0.5 TOTAL SNOWFALL FOR THE MONTH...................1.5  DEPARTURE......-8.0 TOTAL SNOWFALL FOR THE SEASON (2021-2022)......2.5  DEPARTURE......-9.5 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/.../..       35 NNW AERO 37 NNW RMY 36 12/20   32/15/24/-7/0.00/0.0/.../..       29 SSW AERO 30 SSW RMY 30 12/21   40/27/34/+3/0.00/0.0/.../..       31 SW  AERO 32 SW  RMY 33 12/22   45/30/38/+7/0.10/0.0/.../..       47 NW  AERO 45 NW  RMY 47 12/23   30/21/26/-5/0.00/0.0/.../..       39 NW  AERO 38 NW  RMY 37 12/24   25/20/23/-7/0.01/0.1/.../..       14 N   AERO 13 N   RMY 14 12/25   34/25/30/0/0.34/0.0/.../..        20 NNW AERO 20 NNW RMY 18 12/26 The low since midnight is 31F, the daily normal low is 22F 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 26 HIGH 58 IN 1973,1982 LOW -12 IN 1980 PRECIP 3.64 INS. IN 1969 SNOWFALL 17.5 INS. IN 1909 PEAK GUST 84 MPH SSE IN 1957 RECORDS FOR DECEMBER 27 HIGH 57 IN 1895,1949 LOW -4 IN 1903 PRECIP 2.43 INS. IN 1969 SNOWFALL 11.2 INS. IN 1947 PEAK GUST 73 S IN 2011 TODAY'S REPORT PREPARED BY: Matt Douglas