Monday, March 3, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, MARCH 3, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0616E
SUNSET: 1737E
STILL WELL BELOW NORMAL TEMPERATURE-WISE, BUT MUCH LESS WIND….
Skies have remained clear today with the exception of some distant
stratocumulus, altocumulus, and cirrus clouds in various directions.
It’s one of those days where looking outside is a bit deceiving,
especially with the higher sun angle of early March. It looks
inviting out there, then you step outside and it’s like visiting
the Arctic.
Temperatures started in the single digits early this morning with
a reading of 8F degrees here on the summit. While we have “warmed”
up significantly into early this afternoon, readings are still a
solid 10 degrees below expected values for the date. The high so
far has only reached the 30F degree mark. Dew point values remain
on the very low side with values however a couple of degrees either
side of zero.
Winds have tapered down since yesterday and early this morning.
The average speed for the day so far is around 11mph, but the trend
is for decreasing speed as winds have dropped below 10mph early
this afternoon. The peak gust for the day occurred way back at
3:12am this morning with a value of 28mph.
Much like yesterday, thanks to the aforementioned dry air, we have
had exceptional visibility! We were in the 60 mile range for most
of the morning and improved to about 70 miles by the early
afternoon.
The maximum temperature for today is 30F degrees, which is 10
degrees below the normal high of 40F. The minimum temperature since
midnight is 8 degrees, which is 15 degrees below the normal low
of 23F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumlus distant NE-ESE, few cirrus distant
N-E-S
Temperature: 10F; Dew Point: -2F; Relative Humidity: 59%
Wind: NNW @ 10G17 kts
Sea-level pressure: 1023.7 mb; 30.23 in. Hg: rising unsteadily
Visibility: 60 miles
6-hr Max temp: 14F
6-hr Min temp: 8F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 60 237/10/-2/3310G17/023/ FEW SC DSNT NE-ESE
FEW CI DSNT N-E-S/ 8/501 52015 10014 20008
10 A.M.
Weather: Clear, few stratocumulus distant NE-E, few cirrus distant
WSW-WNW and distant ENE-SE
Temperature: 19F; Dew Point: -2F; Relative Humidity: 39%
Wind: NNW @ 8 kts
Sea-level pressure: 1024.3 mb; 30.25 in. Hg: rising, then more slowly
Visibility: 60 miles
3-hr Precip: 0.0 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 60 243/19/-2/3408/025/ FEW SC DSNT NE-E
FEW CI DSNT WSW-WNW AND DSNT ENE-SE/ 8/501 51006
1 P.M.
Weather: Clear, few stratocumulus distant NE-ESE, few altocumulus
distant SW-W
Temperature: 27F; Dew Point: 2F; Relative Humidity: 34%
Wind: NW @ 7G14 kts
Sea-level pressure: 1022.5 mb; 30.19 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 28F
6-hr Min temp: 10F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 70 225/27/2/3107G14/019/ FEW SC DSNT NE-ESE
FEW AC DSNT SW-W/ 8/550 58018 10028 20010
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SUMMARY FOR SUNDAY, MARCH 2, 2025
TEMPERATURE (DEGREES F)
MAX…….28 NORMAL…..40
MIN…….14 NORMAL…..23
MEAN……21 NORMAL…..32
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….-11
TOTAL DEPARTURE FOR THE MONTH……………………..-6 [-3.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….44 DEPARTURE…….+10
TOTAL HEATING UNITS FOR THE MONTH…………….73 DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE SEASON………….4254 DEPARTURE……-254
TOTAL HEATING UNITS LAST SEASON TO DATE……..3947 DEPARTURE……+307
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)………..41 NW @ 01:16 A.M.
VECTOR #1 (1-Sec)……….42 NW @ 01:16 A.M.
VECTOR #2 (1-Sec)……….43 WNW @ 01:16 A.M.
DAVIS #1……………….41 WNW @ 01:16 A.M.
DAVIS #2 ………………38 NW @ 01:17 A.M.
RMY #1 (Instantaneous)…..43 WNW @ 01:16 A.M.
RMY #2 (Instantaneous)…..43 WNW @ 01:16 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………32 NW @ 01:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..28 @ 01:16 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..31 @ 01:19 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………30 WNW @ 01:15 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 NW @ 01:19 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..28 NW @ 01:15 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 WNW @ 01:19 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..15.8 WNW [379 total miles]
VECTOR #1………………15.2
VECTOR #2………………16.7
DAVIS #1……………….16.0 WNW
DAVIS #2……………….16.5 NW
RMY #1…………………14.6 WNW
RMY #2…………………16.2 W
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.34
TOTAL PRECIPITATION FOR THE YEAR (2025)……..5.65 DEPARTURE…..-3.19
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.00 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-1.3
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-19.1
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR MARCH 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
3/1 50/21/36/+5/T/T/…/.. 46 NW VEC1 46 NW RMY 49
3/2 28/14/21/-11/0.00/0.0/…/.. 41 NW VEC1 42 NW RMY 43
3/3 The low since midnight is 8F, the daily normal low is 23F.
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MARCH 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 MARCH 3
HIGH 64 IN 1991, 2020
LOW -1 IN 1950
PRECIP 2.36 INS. IN 1972
SNOWFALL 12.8 INS. IN 1960
PEAK GUST 78e MPH E IN 1942
RECORDS FOR MARCH 4
HIGH 69 IN 1974
LOW -5 IN 1950 [RECORD LOW FOR MONTH]
PRECIP 1.80 IN 1960
SNOWFALL 17.3 IN 1960
PEAK GUST 81e MPH SSW IN 1971
TODAY’S REPORT PREPARED BY: Matt Douglas/Andrew Sullivan
