Sunday, December 25, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, DECEMBER 25, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0712E
SUNSET: 1617E
CHILLY OUT THERE ON CHRISTMAS DAY….
Today is a carbon copy of the day before, with
frigid temperatures and clear skies. Visibility is
limited to 30 miles on average due to haze. Wind is
around 15 mph on average from the southwest with a
max gust of 30 mph earlier this morning.
The ponds are mostly frozen after 2 single-digit
temperature overnights.
The high so far today is only 17F, which is 21 degrees below the
normal maximum of 38F. The low since midnight is 6F, which
is 17 degrees below the normal minimum of 23F.
Merry Christmas to you and yours, and stay warm!
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus
Temperature: 10F; Dew Point: 1F; Relative Humidity: 67%
Wind: WSW @ 13G21 kts
Sea-level pressure: 1009.9 mb; 29.82 in. Hg: rising, then
more slowly
Visibility: 20 miles, haze
6-hr Max temp: 10F
6-hr Min temp: 9F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 20 099/10/1/2513G21/982/ FEW SC ALQDS HAZY/
8/500 51013 10010 20009
10 A.M.
Weather: Clear, few stratocumulus
Temperature: 17F; Dew Point: 5F; Relative Humidity: 59%
Wind: WSW @ 10G20 kts
Sea-level pressure: 1010.3 mb; 29.86 in. Hg: rising, then
more slowly
Visibility: 40 miles, haze
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 40 103/17/5/2510G20/986/ FEW SC ALQDS HAZY/
8/500 51013
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SUMMARY FOR SATURDAY, DECEMBER 24, 2022
TEMPERATURE (DEGREES F)
MAX…….17 NORMAL…..38
MIN……..6 NORMAL…..23
MEAN……12 NORMAL…..30
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..-18
TOTAL DEPARTURE FOR THE MONTH………………..+26 [+0.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………53 DEPARTURE…….+18
TOTAL HEATING UNITS FOR THE MONTH…………..730 DEPARTURE…….-27
TOTAL HEATING UNITS FOR THE SEASON…………1699 DEPARTURE……-262
TOTAL HEATING UNITS LAST SEASON TO DATE…….1676 DEPARTURE…….+23
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….37 WSW @ 1:16 A.M.
VECTOR #2 (Instantaneous)..40 @ 12:14 A.M.
DAVIS #2 ………………35 WSW @ 12:14 A.M.
RMY #2 (Instantaneous)…..39 WSW @ 3:08 A.M.
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………………27 WSW @ 2:11 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26 @ 2:10 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 WSW @ 2:10 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 WSW @ 2:10 A.M.
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…….15.8 WSW [380 total miles]
VECTOR #2……………..16.2
DAVIS #2………………16.7 WSW
RMY #2………………..16.1 WSW
RMY #1……….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…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..5.51 DEPARTURE…..+1.25
TOTAL PRECIPITATION FOR THE YEAR…………..42.58 DEPARTURE….-10.15
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………..2.7 DEPARTURE……-6.3
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….2.7 DEPARTURE……-8.8
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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
12/1 40/30/35/-2/0.00/0.0/520/93 54 NW AERO N/A RMY 60
12/2 44/27/36/-1/0.00/0.0/535/96 24 SSW AERO N/A RMY 25
12/3 57/36/47/+11/0.31/0.0/000/00 54 SSW AERO N/A RMY 57
12/4 41/30/36/0/0.00/0.0/355/64 39 WNW AERO N/A RMY 41
12/5 48/29/39/+3/0.00/0.0/454/82 32 SSW AERO N/A RMY 32
12/6 54/38/46/+11/0.09/0.0/000/00 30 SSE AERO N/A RMY 31
12/7 56/46/51/+16/0.85/0.0/000/00 39 SSE AERO N/A RMY 39
12/8 53/33/43/+8/0.00/0.0/534/97 36 NNW AERO N/A RMY 39
12/9 44/29/37/+3/0.00/0.0/549/100 29 N AERO N/A RMY 30
12/10 31/27/29/-5/0.04/0.4/000/00 27 NE AERO N/A RMY 26
12/11 30/23/27/-7/0.15/2.1/000/00 25 NNE AERO N/A RMY 26
12/12 29/21/25/-9/T/T/395/72 24 N AERO N/A RMY 24
12/13 38/19/29/-4/0.00/0.0/547/100 38 NNW AERO N/A RMY 38
12/14 35/18/27/-6/T/0.1/…/.. 42 NNW AERO N/A RMY 44
12/15 40/30/35/+2/0.09/0.0/…/.. 40 E AERO N/A RMY 41
12/16 42/39/41/+9/1.88/0.0/…/.. 47 E AERO N/A RMY 48
12/17 42/31/37/+5/0.45/0.1/…/.. 37 WNW AERO N/A RMY 38
12/18 39/27/33/+1/0.00/0.0/…/.. 29 NW AERO N/A RMY 28
12/19 39/25/32/0/0.00/0.0/…/.. 41 WNW AERO N/A RMY 41
12/20 38/25/32/+1/0.00/0.0/…/.. 34 NW AERO N/A RMY 35
12/21 37/22/30/-1/0.00/0.0/…/.. 17 N AERO N/A RMY 17
12/22 43/28/36/+5/…./0.0/…/.. 44 E AERO N/A RMY 45
12/23 55/15/35/+4/…./0.0/…/.. 74 SE AERO N/A RMY 74
12/24 17/6/12/-18/…./0.0/…/.. 37 WSW AERO N/A RMY 39
12/25 The low since midnight is 9F, the daily normal low is 22F
DAILY RECORDS
12/16/2022: NEW PRECIPITATION RECORD OF 1.88 INS,
THIS BEATS THE OLD RECORD OF 1.67 INS SET IN 1960
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR DECEMBER 25
HIGH 64 IN 2015
LOW -11 IN 1980
PRECIP 2.15 INS. IN 2020
SNOWFALL 8.5 INS. IN 2002
PEAK GUST 80 MPH NW IN 1971
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
TODAY’S REPORT PREPARED BY: Benjamin Turner
