Tuesday, January 14, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, JANUARY 14, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0711E
SUNSET: 1636E
PLENTY OF SUNSHINE TODAY, BUT WINDY AND COLDER….
It’s a beautiful sunny day as long as you’re just looking out the
window! Going outside offers one a blustery cold experience with wind
chill values stuck in the teens to lower 20s! Not the most pleasant
conditions out there.
Temperatures are on the cold side today with readings reaching the
low 30s by early this afternoon. This is a bit below normal for this
time of year. The dew point has been dropping off a bit however, with
values slipping from the mid teens to the lower teens, indicative of
yet another arctic air mass overtaking the region.
Winds have picked up once again after being generally on the light
side yesterday. The average speed for the day so far is around 15mph
out of mainly the west-northwest. Gusts have ramped up during the
mid to late morning period with values over 30mph being common. The
peak gust for the day so far is 38mph, which occurred right at 11:30am
this morning.
Visibility has been gradually improving through the day, starting at
around 40 miles early this morning, but reaching around 60 miles by
early this afternoon.
The maximum temperature for today is 32F degrees, which is 2 degrees
below the normal high of 34F. The minimum temperature since midnight
is 23F degrees, which is 5 degrees above the normal low of 18F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant all quadrants
Temperature: 24F; Dew Point: 16F; Relative Humidity: 71%
Wind: W @ 11G17 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling, then rising
Visibility: 40 miles, hazy
6-hr Max temp: 27F
6-hr Min temp: 23F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1155 CLR 40 108/24/16/2811G17/985/ FEW SC DSNT ALQDS HAZY/
8/500 4/000 53005 10027 20023
10 A.M.
Weather: Clear, few stratocumulus distant NE-E and distant SW-NW,
few altocumulus distant N-E-S
Temperature: 28F; Dew Point: 13F; Relative Humidity: 52%
Wind: WNW @ 15G25 kts, peak wind WNW 31mph at 9:18 A.M.
Sea-level pressure: 1011.3 mb; 29.86 in. Hg: rising, then steady
Visibility: 50 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 50 113/28/13/3015G25/986/ FEW SC DSNT NE-E AND DSNT SW-NW
FEW AC DSNT N-E-S PK WND 2927/18/ 8/550 51005
1 P.M.
Weather: Clear, few stratocumulus all quadrants, few cirrus distant W
Temperature: 31F; Dew Point: 10F; Relative Humidity: 41%
Wind: WNW @ 18G29 kts, peak wind WNW 38mph at 12:19 P.M.
Sea-level pressure: 1009.3 mb; 29.81 in. Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 32F
6-hr Min temp: 23F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1755 CLR 60 093/31/10/2918G29/981/ FEW SC ALQDS FEW CI DSNT W
PK WND 3033/19/ 8/501 4/000 56020 10032 20023
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SUMMARY FOR MONDAY, JANUARY 13, 2025
TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..35
MIN…….26 NORMAL…..18
MEAN……33 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+7
TOTAL DEPARTURE FOR THE MONTH……………………..-2 [-0.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………32 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE MONTH…………..490 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE SEASON…………2422 DEPARTURE……-277
TOTAL HEATING UNITS LAST SEASON TO DATE…….2301 DEPARTURE……+121
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)………..26 WNW @ 09:15 P.M.
VECTOR #1 (1-Sec)……….27 WNW @ 09:15 P.M.
VECTOR #2 (1-Sec)……….35 WNW @ 10:51 P.M.
DAVIS #1……………….27 W @ 07:44 P.M.
DAVIS #2 ………………29 W @ 10:52 P.M.
RMY #1 (Instantaneous)…..27 WNW @ 09:15 P.M.
RMY #2 (Instantaneous)…..34 WNW @ 10:51 P.M.
MERLIN…………………26 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WNW @ 10:47 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 09:16 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 @ 09:16 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 W @ 09:16 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 WNW @ 09:16 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 WNW @ 09:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 WNW @ 09:16 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.8 WSW [211 total miles]
VECTOR #1……………….9.0
VECTOR #2……………….9.5
DAVIS #1………………..9.2 W
DAVIS #2………………..9.3 W
RMY #1………………….8.6 W
RMY #2………………….9.3 W
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…………..0.67 DEPARTURE…..-1.29
TOTAL PRECIPITATION FOR THE YEAR (2025)……..0.67 DEPARTURE…..-1.29
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………..1.7 DEPARTURE……-5.6
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……14.3 DEPARTURE……-8.1
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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/+13/0.55/0.0/000/00 44 W VEC1 45 W RMY 44
1/2 42/31/37/+9/T/T/534/97 60 W VEC1 60 WNW RMY 63
1/3 36/26/31/+3/0.00/0.0/446/81 48 W VEC1 48 W RMY 51
1/4 29/22/26/-2/0.00/0.0/453/82 43 NW VEC1 43 NW RMY 48
1/5 32/18/25/-3/0.00/0.0/088/16 39 WNW VEC1 39 WNW RMY 40
1/6 23/15/19/-9/0.00/0.0/000/00 31 NNW VEC1 31 NNW RMY 31
1/7 24/11/18/-9/T/T/450/81 43 WNW VEC1 42 WNW RMY 47
1/8 27/14/21/-6/0.00/0.0/550/99 48 WNW VEC1 48 WNW RMY 52
1/9 25/13/19/-8/T/T/…/.. 46 NW VEC1 47 NW RMY 51
1/10 40/19/30/+3/0.00/0.0/…/.. 39 NW VEC1 39 NW RMY 42
1/11 30/21/26/-1/0.12/1.7/…/.. 25 NW VEC1 26 NW RMY 28
1/12 36/19/28/+1/0.00/0.0/…/.. 35 NNW VEC1 35 NNW RMY 39
1/13 39/26/33/+7/0.00/0.0/…/.. 26 WNW VEC1 27 WNW RMY 27
1/14 The low since midnight is 23F, the daily normal low is 18F.
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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 14
HIGH 65F IN 1995
LOW -12F IN 1914
PRECIP 1.45 INS. IN 2008
SNOWFALL 10.3 INS. IN 2008
PEAK GUST 68 MPH WNW IN 1976, S IN 2005
RECORDS FOR JANUARY 15
HIGH 64F IN 1995
LOW -16F IN 1957 [RECORD LOW FOR MONTH]
PRECIP 2.63 INS. IN 1958
SNOWFALL 8.8 INS. IN 1983
PEAK GUST 69e MPH SE IN 1940
TODAY’S REPORT PREPARED BY: Matt Douglas
