Tuesday, February 11, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, FEBRUARY 11, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0646E
SUNSET: 1712E
MAINLY CLOUDY SKIES TODAY WITH A COLD BREEZE AND DRY AIR….
A deck of high cirrus clouds have been covering our sky for the
most part today. A little bit of dim sunshine does filter through
at times when the deck thins a bit. Otherwise, dry weather has been
the theme for the day with a chilly westerly breeze making it feel
quite a bit colder than the thermometer would otherwise suggest.
Temperatures started the day in the mid teens and have “recovered”
to near 30F by early this afternoon. This is of course below normal
levels once again for today’s date. Dew point values have been
holding in the low to mid teens all day, indicative of the cold,
near arctic, air mass over the region.
A mainly westerly breeze has been averaging around 9mph for the day
so far. It does get a bit gusty at times with values reaching the
low 20s. This is helping to create wind chill values generally
in the mid to upper teens, even into early this afternoon. The peak
gust so far today is 22mph, which occurred at 12:14pm.
Visibility has been stuck around 40 miles all day with some hazy
conditions being observed today.
The maximum temperature for today is 30F degrees, which is 6 degrees
below the normal high of 36F. The minimum temperature since midnight
is 14F degrees, which is 5 degrees below the normal low of 19F.
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Today’s Observations:
7 A.M.
Weather: Thin broken cirrus, few stratocumulus offshore distant NE-SE
Temperature: 16F; Dew Point: 10F; Relative Humidity: 78%
Wind: W @ 9 kts
Sea-level pressure: 1029.8 mb; 30.41 in. Hg: falling, then rising
Visibility: 40 miles, hazy
6-hr Max temp: 19F
6-hr Min temp: 14F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1155 E250 -BKN 40 298/16/10/2609/041/ FEW SC OFFSHR DSNT NE-SE/
8/501 4/003 53005 10019 20014
10 A.M.
Weather: Overcast cirrus, few breaks in overcast distant NW-ENE
Temperature: 24F; Dew Point: 12F; Relative Humidity: 58%
Wind: W @ 9G15 kts
Sea-level pressure: 1029.3 mb; 30.40 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 OVC 40 293/24/12/2609G15/040/ FEW BINOVC DSNT NW-ENE/
8/002 58005
1 P.M.
Weather: Scattered cirrostratus, overcast cirrus, few breaks in
overcast distant WNW-N-ENE
Temperature: 29F; Dew Point: 15F; Relative Humidity: 56%
Wind: WSW @ 9G18 kts
Sea-level pressure: 1027.3 mb; 30.34 in. Hg: rising, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 30F
6-hr Min temp: 16F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1755 220 SCT E250 OVC 40 273/29/15/2509G18/034/ FEW BINOVC DSNT
WNW-N-ENE HAZY/ 8/007 4/003 58020 10030 20016
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SUMMARY FOR MONDAY, FEBRUARY 10, 2025
TEMPERATURE (DEGREES F)
MAX…….33 NORMAL…..36
MIN…….19 NORMAL…..19
MEAN……26 NORMAL…..27
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-1
TOTAL DEPARTURE FOR THE MONTH…………………….-12 [-1.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………39 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………..396 DEPARTURE…….+12
TOTAL HEATING UNITS FOR THE SEASON…………3539 DEPARTURE……-248
TOTAL HEATING UNITS LAST SEASON TO DATE…….3267 DEPARTURE……+272
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 @ 02:17 P.M.
VECTOR #1 (1-Sec)……….27 NW @ 01:57 P.M.
VECTOR #2 (1-Sec)……….29 WNW @ 02:18 P.M.
DAVIS #1……………….25 W @ 01:01 P.M.
DAVIS #2 ………………27 WNW @ 02:18 P.M.
RMY #1 (Instantaneous)…..28 NW @ 01:57 P.M.
RMY #2 (Instantaneous)…..29 WNW @ 02:18 P.M.
MERLIN…………………25 NW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………21 WNW @ 01:04 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 @ 02:19 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21 @ 02:20 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 W @ 02:19 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 WNW @ 02:20 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 WNW @ 02:19 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 WNW @ 02:20 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.3 WNW [270 total miles]
VECTOR #1………………11.2
VECTOR #2………………12.0
DAVIS #1……………….11.6 WNW
DAVIS #2……………….11.8 NW
RMY #1…………………10.7 WNW
RMY #2…………………11.7 WNW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.83 DEPARTURE…..-0.51
TOTAL PRECIPITATION FOR THE YEAR (2025)……..3.18 DEPARTURE…..-2.66
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………..7.0 DEPARTURE……+0.2
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……28.0 DEPARTURE…..-12.5
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PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
2/1 32/10/21/-5/0.07/0.4/000/00 35 NNW VEC1 34 NNW RMY 35
2/2 24/5/15/-11/0.10/1.0/260/43 22 SE VEC1 25 SE RMY 24
2/3 42/24/33/+7/0.05/0.5/321/53 35 SSW VEC1 35 SSW RMY 35
2/4 41/20/31/+5/0.00/0.0/542/89 51 NW VEC1 51 NW RMY 55
2/5 27/14/21/-6/0.00/0.0/562/92 32 NW VEC1 32 NW RMY 32
2/6 32/16/24/-3/0.22/1.0/000/00 26 SE VEC1 28 SE RMY 25
2/7 38/22/30/+3/0.00/0.0/542/88 48 WNW VEC1 49 WNW RMY 50
2/8 35/19/27/0/0.09/1.1/433/70 23 W VEC1 22 W RMY 23
2/9 29/23/26/-1/0.30/3.0/…/.. 24 N VEC1 24 N RMY 24
2/10 33/19/26/-1/0.00/0.0/…/.. 26 WNW VEC1 27 NW RMY 28
2/11 The low since midnight is 14F, the daily normal low is 19F.
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FEBRUARY 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 FEBRUARY 11
HIGH 60F IN 1981
LOW -10F IN 1899
PRECIP 1.07 INCHES IN 1955
SNOWFALL 9.6 INCHES IN 1933
PEAK GUST 95 MPH S IN 1981
RECORDS FOR FEBRUARY 12
HIGH 59F IN 2022
LOW -14F IN 1914
PRECIP 4.85 INCHES IN 1886 [RECORD FOR MONTH]
SNOWFALL 15.0 INCHES IN 2006
PEAK GUST 70 MPH E IN 1985
TODAY’S REPORT PREPARED BY: Matt Douglas/Jack Willard
