Thursday, March 6, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, MARCH 6, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0611E
SUNSET: 1740E
A GOOD DOSE OF RAIN AND STRONG WINDS OVERNIGHT; OVERCAST WITH
DENSE FOG AND LIGHTER WIND FOR THE BALANCE OF THE DAY SO FAR….
Periods of moderate rainfall moved through overnight accompanied
by strong winds for a few hours as a strong low level jet moved
over the region. Rainfall totaled 0.89″ from the event which
began during the evening hours yesterday. A period of very strong
winds also moved through peaking with a gust to 69mph between
1-2am this morning.
The rain came to an end early this morning with only a little bit
of drizzle that fell between 7-9am this morning. Otherwise dense
fog has been the theme all day.
Temperatures topped out in the mid 50s during the wee hours of the
morning, dropping to 49F briefly between 7-8am. This has been the
low for the day so far. This would be a new record high minimum
if it could hold until midnight tonight, but that’s unlikely to
be the case. For reference, the record is 48F set in 1979.
Readings recovered back into the lower 50s by mid morning, where
it remains early this afternoon.
As mentioned, winds were strong during the wee hours of the morning
with the first 5 hours of the day averaging over 30mph. Winds have
dropped off drastically since then, even going light early this
afternoon. The average speed for the day so far is around 19mph,
but the past couple of hours have only averaged around 7mph! The
peak gust for the day occurred at 1:47am with a value of 69mph.
Visibility has been quite limited today by the dense fog. The view
has generally been a 1/4 of a mile or less, but did managed to reach
upto 3 miles briefly between 11am-noon when the fog attempted to lift.
The maximum temperature for today is 55F degrees, which is 14 degrees
above the normal high of 41F. The minimum temperature since midnight
is 49 degrees, which is 25 degrees above the normal low of 24F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: SSW @ 13G21 kts, peak gust SSW 31mph at 6:02 A.M.
Sea-level pressure: 991.0 mb; 29.26 in. Hg: falling, then rising
Visibility: 1/8 mile, fog
6-hr Max temp: 55F
6-hr Min temp: 50F
24-hr Precip: 0.89 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 X W2 1/8F 910/50/50/2113G21/926/ PK WND 2027/02/ 8////
55000 6035/ 70089 10055 20050
10 A.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: SSW @ 10 kts
Sea-level pressure: 990.7 mb; 29.26 in. Hg: steady, then falling
Visibility: 1/4 mile, fog
3-hr Precip: Trace
3-hr Snowfall: 0.0 inches
BHO SA 1455 X W2 1/4F 907/50/50/2110/926/ 8//// 58003 6000/
1 P.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 51F; Dew Point: 51F; Relative Humidity: 100%
Wind: SW @ 5 kts, wind light
Sea-level pressure: 989.2 mb; 29.21 in. Hg: falling, then more rapidly
Visibility: 1/8 mile, fog
6-hr Max temp: 52F
6-hr Min temp: 49F
6-hr Precip: Trace
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 X W2 1/8F 892/51/51/2305/921/ WND LGT/ 8//// 58015 6000/
10052 20049
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SUMMARY FOR WEDNESDAY, MARCH 5, 2025
TEMPERATURE (DEGREES F)
MAX…….54 NORMAL…..41
MIN…….41 NORMAL…..24
MEAN……48 NORMAL…..32
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+16
TOTAL DEPARTURE FOR THE MONTH……………………..+2 [+0.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….17 DEPARTURE…….-16
TOTAL HEATING UNITS FOR THE MONTH……………164 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON………….4345 DEPARTURE……-253
TOTAL HEATING UNITS LAST SEASON TO DATE……..4011 DEPARTURE……+334
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)………..50 SSW @ 02:26 P.M.
VECTOR #1 (1-Sec)……….50 SSW @ 02:26 P.M.
VECTOR #2 (1-Sec)……….48 SSW @ 02:26 P.M.
DAVIS #1……………….53 S @ 03:20 P.M.
DAVIS #2 ………………55 S @ 05:34 P.M.
RMY #1 (Instantaneous)…..55 SSW @ 02:28 P.M.
RMY #2 (Instantaneous)…..51 SSW @ 02:26 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………33 SSW @ 03:17 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..33 @ 02:27 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..34 @ 02:27 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………33 S @ 02:29 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………37 S @ 02:29 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..32 SSW @ 02:27 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 SSW @ 02:27 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..21.6 SSW [518 total miles]
VECTOR #1………………21.1
VECTOR #2………………21.9
DAVIS #1……………….20.7 S
DAVIS #2……………….22.2 SSW
RMY #1…………………20.7 SSW
RMY #2…………………22.1 S
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.89 DEPARTURE…..+0.72
TOTAL PRECIPITATION FOR THE MONTH…………..0.89 DEPARTURE…..+0.03
TOTAL PRECIPITATION FOR THE YEAR (2025)……..6.54 DEPARTURE…..-2.82
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……-3.2
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-21.0
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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/081/12 46 NW VEC1 46 NW RMY 49
3/2 28/14/21/-11/0.00/0.0/672/99 41 NW VEC1 42 NW RMY 43
3/3 31/8/20/-12/0.00/0.0/667/98 28 NW VEC1 28 NW RMY 31
3/4 48/23/36/+4/0.00/0.0/390/57 41 SW VEC1 42 SW RMY 43
3/5 54/41/48/+16/0.52/0.0/021/03 50 SSW VEC1 50 SSW RMY 55
3/6 The low since midnight is 49F, the daily normal low is 24F.
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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 6
HIGH 66 IN 1894
LOW 3 IN 1948, 2007
PRECIP 1.85 INS. IN 2001
SNOWFALL 15.5 INS. IN 2001
PEAK GUST 82 MPH S IN 1959
RECORDS FOR MARCH 7
HIGH 66 IN 1946
LOW -1 IN 1890
PRECIP 2.05 INS. IN 1967
SNOWFALL 11.5 INS. IN 2013
PEAK GUST 66 MPH NE IN 1962
TODAY’S REPORT PREPARED BY: Matt Douglas
