Monday, January 6, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JANUARY 6, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1627E
CLOUDY AND COLD WITH A STEADY WIND KEEPING WIND CHILLS LOW….
Skies have been overcast all day as a storm system is passing by to
our south. The snow shield is seen on radar across portions of
Connecticut and southwest Rhode Island, and may attempt to push into
parts of southeast Massachusetts later this afternoon before drier
air aloft takes over. However we do not anticipate any snow here at
Blue Hill.
With the cloud cover and cold air mass in place, temperatures have
been quite slow to rise today, only reaching the low 20s by early
this afternoon after starting in the mid teens. The dew point is
quite low, indicative of the arctic air mass over the region.
Readings have generally been in the upper single digits to low
teens.
Winds are not as gusty as the past few days, but it is still steadily
on the brisk side out of mainly the west-northwest. The average speed
for the day so far is around 12mph. The peak gust so far for the day
is 28mph, which occurred at 1:40am this morning.
Visibility has been excellent today despite the overcast sky. The
views has ranged between 60-80 miles all day.
The maximum temperature for today is 22F degrees, which is 13 degrees
below the normal high of 35F. The minimum temperature since midnight
is 15F degrees, which is 5 degrees below the normal low of 20F.
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Today’s Observations:
7 A.M.
Weather: Overcast cirrus, few breaks in overcast distant NNE-ESE and
distant SE-SSW, few stratocumulus distant NE-SE-SSW
Temperature: 16F; Dew Point: 9F; Relative Humidity: 73%
Wind: WNW @ 13G20 kts
Sea-level pressure: 1013.3 mb; 29.92 in. Hg: falling, then rising
Visibility: 60 miles
6-hr Max temp: 18F
6-hr Min temp: 15F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E250 OVC 60 133/16/9/2913G20/992/ FEW BINOVC DSNT NNE-ESE
AND DSNT SE-SSW FEW SC DSNT NE-SE-SSW/ 8/501 55008 10018 20015
10 A.M.
Weather: Overcast cirrostratus, few breaks in overcast distant NW-NE,
few stratocumulus distant NE-SE-SSW
Temperature: 20F; Dew Point: 10F; Relative Humidity: 65%
Wind: WNW @ 7G16 kts
Sea-level pressure: 1011.8 mb; 29.88 in. Hg: falling, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E200 OVC 80 118/20/10/3007G16/988/ FEW BINOVC DSNT NW-NE
FEW SC DSNT NE-SE-SSW/ 8/506 56015
1 P.M.
Weather: Broken altostratus, Overcast cirrostratus, few breaks in
overcast distant NNW-NE, few stratocumulus distant ENE-ESE
Temperature: 21F; Dew Point: 10F; Relative Humidity: 60%
Wind: WNW @ 10G16 kts
Sea-level pressure: 1007.1mb; 29.74 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 22F
6-hr Min temp: 16F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E100 BKN 200 OVC 80 071/21/10/2910G16/974/ FEW BINOVC DSNT
NNW-NE FEW SC DSNT ENE-ESE/ 8/528 58047 10022 20016
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SUMMARY FOR SUNDAY, JANUARY 5, 2025
TEMPERATURE (DEGREES F)
MAX…….32 NORMAL…..36
MIN…….18 NORMAL…..20
MEAN……25 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….-3
TOTAL DEPARTURE FOR THE MONTH……………………+20 [+3.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………40 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..164 DEPARTURE…….-21
TOTAL HEATING UNITS FOR THE SEASON…………2096 DEPARTURE……-298
TOTAL HEATING UNITS LAST SEASON TO DATE…….2069 DEPARTURE…….+27
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated
F420C (Official)………..39 WNW @ 10:46 A.M.
VECTOR #1 (1-Sec)……….39 WNW @ 10:46 A.M.
VECTOR #2 (1-Sec)……….42 WNW @ 12:35 P.M.
DAVIS #1……………….41 W @ 10:46 A.M.
DAVIS #2 ………………38 WNW @ 10:46 A.M.
RMY #1 (Instantaneous)…..40 WNW @ 10:46 A.M.
RMY #2 (Instantaneous)…..44 WNW @ 12:35 P.M.
MERLIN…………………35 NW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………27 WNW @ 10:45 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..27 @ 10:47 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 @ 10:47 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………28 WNW @ 10:48 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………29 NW @ 10:47 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..26 WNW @ 10:47 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 WNW @ 10:47 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..15.8 WNW [378 total miles]
VECTOR #1………………15.2
VECTOR #2………………16.1
DAVIS #1……………….16.0 WNW
DAVIS #2……………….15.8 WNW
RMY #1…………………14.5 WNW
RMY #2…………………15.6 WNW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.55 DEPARTURE…..-0.21
TOTAL PRECIPITATION FOR THE YEAR (2025)……..0.55 DEPARTURE…..-0.21
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-2.7
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……12.6 DEPARTURE……-5.2
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PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
1/1 47/36/42/+13/0.55/0.0/…/.. 44 W VEC1 45 W RMY 44
1/2 42/31/37/+9/T/T/…/.. 60 W VEC1 60 WNW RMY 63
1/3 36/26/31/+3/0.00/0.0/…/.. 48 W VEC1 48 W RMY 51
1/4 29/22/26/-2/0.00/0.0/…/.. 43 NW VEC1 43 NW RMY 48
1/5 32/18/25/-3/0.00/0.0/…/.. 39 WNW VEC1 39 WNW RMY 40
1/6 The low since midnight is 15F, the daily normal low is 20F.
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JANUARY DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JANUARY 6
HIGH 66F IN 2007
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH]
SNOWFALL 5.2 INS. IN 2005
PEAK GUST 70 MPH WNW IN 1959
RECORDS FOR JANUARY 7
HIGH 60F IN 1930
LOW -8F IN 2018
PRECIP 1.97 INS. IN 1977
SNOWFALL 16.0 INS. IN 1977
PEAK GUST 74 MPH NW IN 1968
TODAY’S REPORT PREPARED BY: Matt Douglas
