Monday, February 3, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, FEBRUARY 3, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0655E
SUNSET: 1701E
ANOTHER LIGHT SNOWFALL EVENT OVERNIGHT; SUNNY AND MILDER TODAY…
Yet another clipper system brought a light snowfall to the area
overnight. 1.5″ of snow was measured here on the summit of Blue Hill,
bringing the monthly total to 1.9″ and the seasonal total to 22.9″.
The seasonal total is 12.2″ shy of the expected amount by this date,
so the snow drought continues. The snow melted down to 0.15″ of
liquid, yielding a “normal” 10:1 ratio!
Once the snow ended just before 4am this morning, we were stuck in
the clouds (dense freezing fog) while the temperature was in the 20s.
This resulted in the accumulation of some light rime ice on all
surfaces early this morning. While rime isn’t unheard of here at Blue
Hill, it’s occurrence doesn’t happen too often and is a treat when it
does.
The fog burned off by mid morning with filtered sunshine taking over
through mainly high clouds. Some mid and low level clouds did join in
for a time during the late morning hours, but those have since
dissipated.
Temperatures have warmed nicely from the 20s early this morning to
the low 40s by early this afternoon, which is above normal for this
time of year.
Winds are steady, but generally on the light side, averaging under
10mph. The peak gust for the day so far is only 16mph, which occurred
right around 3am this morning.
Visibility is limited today due to high levels of moisture in the air.
The view improved from a 1/4 mile or less early this morning to around
30-35 miles by early this afternoon.
The maximum temperature for today is 42F degrees, which is 7 degrees
above the normal high of 35F. The minimum temperature since midnight
is 24F degrees, which is 6 degrees above the normal low of 18F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, very light rime icing
Temperature: 28F; Dew Point: 28F; Relative Humidity: 100%
Wind: W @ 7 kts
Sea-level pressure: 1021.5 mb; 30.17 in. Hg: falling, then rising
Visibility: 1/2 mile, 1 ESE, freezing fog
6-hr Max temp: 29F
6-hr Min temp: 25F
24-hr Precip: 0.15 inches
24-hr Snowfall: 1.5 inches
Snow Depth: 2 inches
BHO SA 1155 X W2 1/2ZF 215/28/28/2607/017/ VRY LGT RIME ICING
VSBY 1 ESE TOTAL NEW SNW PST 24 HRS 1.5 INS/ 8//// 4/002 55001
6003/ 70015 10029 20025
10 A.M.
Weather: Thin broken cirrus, few stratocumulus distant WSW-N,
few altocumulus distant SW-NW
Temperature: 33F; Dew Point: 30F; Relative Humidity: 88%
Wind: W @ 5 kts
Sea-level pressure: 1020.8 mb; 30.14 in. Hg: falling, then steady
Visibility: 20 miles, thin fog
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 -BKN 20 208/33/30/2705/014/ FEW SC DSNT WSW-N
FEW AC DSNT SW-NW THN F ALQDS WND LGT/ 8/551 56007
1 P.M.
Weather: Broken cirrus, few stratocumulus distant SE-S, few altocumulus
distant W-N-ESE
Temperature: 42F; Dew Point: 33F; Relative Humidity: 71%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1017.2 mb; 30.04 in. Hg: falling, then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 42F
6-hr Min temp: 27F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 2 inches
BHO SA 1755 E250 BKN 35 172/42/33/2006/004/ FEW SC DSNT SE-S
FEW AC DSNT W-N-ESE HAZY WND LGT/ 8/554 4/002 56036 10042 20027
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SUMMARY FOR SUNDAY, FEBRUARY 2, 2025
TEMPERATURE (DEGREES F)
MAX…….24 NORMAL…..35
MIN……. 5 NORMAL…..18
MEAN……15 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….-11
TOTAL DEPARTURE FOR THE MONTH…………………….-16 [-8.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………50 DEPARTURE…….+11
TOTAL HEATING UNITS FOR THE MONTH……………94 DEPARTURE…….+16
TOTAL HEATING UNITS FOR THE SEASON…………3237 DEPARTURE……-244
TOTAL HEATING UNITS LAST SEASON TO DATE…….3026 DEPARTURE……+211
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)………..22 SE @ 07:53 P.M.
VECTOR #1 (1-Sec)……….25 SE @ 09:29 P.M.
VECTOR #2 (1-Sec)……….23 SE @ 09:37 P.M.
DAVIS #1……………….21 NNW @ 12:09 A.M.
DAVIS #2 ………………22 N @ 12:04 A.M.
RMY #1 (Instantaneous)…..23 NNW @ 12:04 A.M.
RMY #2 (Instantaneous)…..24 NNW @ 12:04 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 NNW @ 12:14 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 08:10 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 08:10 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 SE @ 08:10 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 N @ 12:05 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 SE @ 08:10 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 NNW @ 12:05 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.6 SE [182 total miles]
VECTOR #1……………….8.3
VECTOR #2……………….M
DAVIS #1………………..8.1 ENE
DAVIS #2………………..8.4 E
RMY #1………………….8.1 ENE
RMY #2………………….8.7 ENE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.15 DEPARTURE…..+0.01
TOTAL PRECIPITATION FOR THE MONTH…………..0.22 DEPARTURE…..-0.06
TOTAL PRECIPITATION FOR THE YEAR (2025)……..2.57 DEPARTURE…..-2.21
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.5 DEPARTURE……+0.8
TOTAL SNOWFALL FOR THE MONTH………………..1.9 DEPARTURE……+0.5
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……22.9 DEPARTURE…..-12.2
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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/…/.. 35 NNW VEC1 34 NNW RMY 35
2/2 24/5/15/-11/0.10/1.0/…/.. 22 SE VEC1 25 SE RMY 24
2/3 The low since midnight is 24F, the daily normal low is 18F.
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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 3
HIGH 58F IN 1991
LOW -11F IN 2023
PRECIP 2.14 INS. IN 1970
SNOWFALL 7.0 INS. IN 1913
PEAK GUST 102 MPH S IN 1970 [RECORD FOR MONTH]
RECORDS FOR FEBRUARY 4
HIGH 63F IN 1991
LOW -14F IN 2023
PRECIP 1.80 INS. IN 1926
SNOWFALL 15.0 INS. IN 1961
PEAK GUST 89 MPH SSE IN 1972
TODAY’S REPORT PREPARED BY: Matt Douglas
