Friday, February 7, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, FEBRUARY 7, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0651E
SUNSET: 1707E
RETURN OF SUNSHINE TO START THE WEEKEND, BLUSTERY CONDITIONS
ON GREAT BLUE HILL TODAY….
This morning we had overcast conditions which quickly improved after
sunrise. Throughout the day we have had partly to mostly cloudy
conditions, but the sun has been a nice friend to see, especially
after yesterday’s conditions.
Speaking of which, yesterday’s snow-ice-freezing rain event netted us
0.19 inches of liquid and 1.0 inches of snow. We are still in a deficit
for the month and season in both categories for now.
Temperatures warmed during the overnight hours, as our daily high for
yesterday occurred at 11pm! During the early morning we “dipped” down
to 32F and have only slightly improved to 38F by the final observation.
The blustery wind conditions have kept the temperatures from rising too
much, though the sun has been out for much of the day. It just doesn’t
feel as warm as the mercury reads today.
Winds were the main feature today! We started out with around 10 mph
average winds from the NW during the early morning. A little after
8:30am we had a slight wind shift from the WNW and the wind intensified
quite a bit as the cold air advection moved through. We have had
frequent gusts of over 30mph for much of the mid and late morning hours.
Our average speed so far is around 16mph and our current peak gust of
48mph occurred at 9:24am.
Visibility started the day around 40 miles and improved to 60 miles
by 1pm.
The maximum temperature for today is 38F degrees, which is 3 degrees
above the normal high of 35F. The minimum temperature since midnight
is 32F degrees, which is 14 degrees above the normal low of 18F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus
Temperature: 33F; Dew Point: 33F; Relative Humidity: 100%
Wind: NW @ 9 kts
Sea-level pressure: 1006.0 mb; 29.70 in. Hg: rising unsteadily
Visibility: 40 miles
6-hr Max temp: 34F
6-hr Min temp: 32F
24-hr Precip: 0.19 inches
24-hr Snowfall: 1.0 inches
Snow Depth: Trace
BHO SA 1155 E50 OVC 40 060/33/33/3109/970/ NEW SNW PST 24 HRS 1.0 INS/
8/5// 4/000 52025 70019 10034 20032
10 A.M.
Weather: Broken stratocumulus, broken altocumulus
Temperature: 35F; Dew Point: 20F; Relative Humidity: 53%
Wind: WNW @ 24G34 kts, peak wind 48mph WNW at 9:24 a.m.
Sea-level pressure: 1008.2 mb; 29.77 in. Hg: rising, then more slowly
Visibility: 40 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E60 BKN 75 BKN 40 082/35/30/2824G34/977/ PK WND 2942/24/
8/550 51022
1 P.M.
Weather: Scattered stratocumulus
Temperature: 33F; Dew Point: 14F; Relative Humidity: 45%
Wind: WSW @ 16G26 kts, peak wind 37mph WNW at 12:18pm
Sea-level pressure: 1010.3 mb; 29.83 in. Hg: rising unsteadily
Visibility: 60 miles
6-hr Max temp: 38F
6-hr Min temp: 33F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1755 45 SCT 60 103/33/14/2916G26/983/ PK WND 2832/18/
8/500 4/000 52021 10038 20033
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SUMMARY FOR THURSDAY, FEBRUARY 6, 2025
TEMPERATURE (DEGREES F)
MAX…….32 NORMAL…..35
MIN…….16 NORMAL…..18
MEAN……24 NORMAL…..27
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-3
TOTAL DEPARTURE FOR THE MONTH…………………….-13 [-2.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………41 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..245 DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE SEASON…………3388 DEPARTURE……-247
TOTAL HEATING UNITS LAST SEASON TO DATE…….3163 DEPARTURE……+225
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 SE @ 09:05 A.M.
VECTOR #1 (1-Sec)……….28 SE @ 09:05 A.M.
VECTOR #2 (1-Sec)……….25 SE @ 08:19 A.M.
DAVIS #1……………….25 S @ 09:05 A.M.
DAVIS #2 ………………26 SSE @ 08:20 A.M.
RMY #1 (Instantaneous)…..25 SE @ 09:05 A.M.
RMY #2 (Instantaneous)…..26 SE @ 08:19 A.M.
MERLIN…………………29 SW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 SE @ 06:16 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 06:16 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 09:07 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 SE @ 09:07 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 SE @ 04:57 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 SE @ 06:16 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SE @ 05:14 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.3 ESE [224 total miles]
VECTOR #1……………….9.4
VECTOR #2……………….9.9
DAVIS #1………………..9.0 SE
DAVIS #2………………..9.3 SSE
RMY #1………………….8.8 SE
RMY #2………………….9.7 SE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.19 DEPARTURE…..+0.05
TOTAL PRECIPITATION FOR THE MONTH…………..0.41 DEPARTURE…..-0.41
TOTAL PRECIPITATION FOR THE YEAR (2025)……..2.76 DEPARTURE…..-2.56
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.0 DEPARTURE……+0.4
TOTAL SNOWFALL FOR THE MONTH………………..2.9 DEPARTURE……-1.2
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……23.9 DEPARTURE…..-13.9
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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/-3/0.19/1.0/000/00 26 SE VEC1 28 SE RMY 25
2/7 The low since midnight is 32F, 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 7
HIGH 53F IN 2020
LOW -8F IN 1910
PRECIP 2.12 INS. IN 1983
SNOWFALL 17.1 INS. IN 1978 [BLIZZARD OF 1978]
PEAK GUST 87e MPH SSE IN 1951
RECORDS FOR FEBRUARY 8
HIGH 59F IN 1933
LOW -9F IN 1934
PRECIP 1.86 INS. IN 2013
SNOWFALL 16.1 INS. IN 2013
PEAK GUST 63e MPH NE IN 1945, NE IN 2013
TODAY’S REPORT PREPARED BY: Amanda Joly
