Monday, March 10, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, MARCH 10, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0604E
SUNSET: 1745E
MIX OF CLOUDS AND SUN WITH ABOVE NORMAL TEMPERATURES AND A STIFF
BREEZE….
Just a note, here at BHO we do not use DST, thus all times within
our discussions will continue to be in EST. We do this for continuity
purposes, as well as to keep our record keeping/reporting simplified.
Skies featured plenty of sunshine this morning, but mainly high
level clouds have moved into the area by early this afternoon. This
is leaving us with a mix of sun and clouds.
Temperatures have finally warmed to above seasonal levels with values
reaching the upper 50s early this afternoon. It feels pretty nice out
there today despite the continued brisk wind.
Winds aren’t as strong as the past few days, but it’s still on the
breezy side out there. A general westerly wind has been averaging
around 15mph for the day so far. Gusts have been reaching into the
30-35mph range at times. The peak gust however did reach 38mph just
after 10am this morning.
Visibility has been excellent, rising from around 60 miles early
this morning to a brilliant 80 miles by early this afternoon.
The maximum temperature for today is 58F degrees, which is 16 degrees
above the normal high of 42F. The minimum temperature since midnight
is 33F degrees, which is 8 degrees above the normal low of 25F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant WNW-NNE, few altocumulus/
castellanus distant NE-SSE, few cirrus distant ESE-S-SW
Temperature: 37F; Dew Point: 23F; Relative Humidity: 56%
Wind: WSW @ 14G23 kts
Sea-level pressure: 1008.3 mb; 29.78 in. Hg: falling, then rising
Visibility: 60 miles
6-hr Max temp: 37F
6-hr Min temp: 33F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 60 083/37/23/2514G23/978/ FEW SC DSNT WNW-N-NNE
FEW AC/ACC DSNT NE-SE-SSE FEW CI DSNT ESE-S-SW/ 8/581 53009 10037 20033
10 A.M.
Weather: Scattered cirrus, few stratocumulus distant W-N-NNE
Temperature: 51F; Dew Point: 28F; Relative Humidity: 41%
Wind: WNW @ 16G33 kts, peak wind WNW 38mph at 9:55 A.M.
Sea-level pressure: 1009.3 mb; 29.80 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 SCT 70 093/51/28/2916G33/980/ FEW SC DSNT W-N-NNE
PK WND 2933/55/ 8/501 51010
1 P.M.
Weather: Broken cirrus
Temperature: 58F; Dew Point: 28F; Relative Humidity: 32%
Wind: W @ 13G20 kts
Sea-level pressure: 1008.9 mb; 29.79 in. Hg: rising then falling
Visibility: 80 miles
6-hr Max temp: 58F
6-hr Min temp: 37F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 250 BKN 80 089/58/28/2813G20/979/ WND 24V30/ 8/002 58004
10058 20037
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SUMMARY FOR SUNDAY, MARCH 9, 2025
TEMPERATURE (DEGREES F)
MAX…….45 NORMAL…..42
MIN…….25 NORMAL…..25
MEAN……35 NORMAL…..33
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+2
TOTAL DEPARTURE FOR THE MONTH…………………….+16 [+1.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….30 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH……………278 DEPARTURE…….-16
TOTAL HEATING UNITS FOR THE SEASON………….4459 DEPARTURE……-268
TOTAL HEATING UNITS LAST SEASON TO DATE……..4111 DEPARTURE……+348
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)………..40 W @ 02:51 P.M.
VECTOR #1 (1-Sec)……….39 W @ 02:51 P.M.
VECTOR #2 (1-Sec)……….41 W @ 02:40 P.M.
DAVIS #1……………….40 W @ 02:51 P.M.
DAVIS #2 ………………40 W @ 02:40 P.M.
RMY #1 (Instantaneous)…..42 W @ 02:51 P.M.
RMY #2 (Instantaneous)…..43 W @ 02:39 P.M.
MERLIN…………………38 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 W @ 02:40 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..29 @ 02:53 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 @ 02:41 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………32 W @ 02:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 W @ 02:41 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..28 WNW @ 02:53 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 W @ 02:41 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.8 WNW [331 total miles]
VECTOR #1………………13.5
VECTOR #2………………14.4
DAVIS #1……………….14.2 W
DAVIS #2……………….14.1 WNW
RMY #1…………………12.7 W
RMY #2…………………14.0 W
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.19
TOTAL PRECIPITATION FOR THE MONTH…………..1.18 DEPARTURE…..-0.39
TOTAL PRECIPITATION FOR THE YEAR (2025)……..6.83 DEPARTURE…..-3.24
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-5.5
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-23.3
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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 55/32/44/+11/0.66/T/…/.. 69 S VEC1 69 S RMY 68
3/7 41/25/33/0/T/T/…/.. 60 WNW VEC1 61 WNW RMY 64
3/8 40/27/34/+1/0.00/0.0/…/.. 55 W VEC1 55 W RMY 58
3/9 45/25/35/+2/0.00/0.0/…/.. 40 W VEC1 39 W RMY 42
3/10 The low since midnight is 33F, the daily normal low is 25F.
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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 10
HIGH 69 IN 1977
LOW 2 IN 1984
PRECIP 2.00 INS. IN 1994
SNOWFALL 5.5 INS. IN 1918
PEAK GUST 80 MPH NW IN 1974
RECORDS FOR MARCH 11
HIGH 71 IN 2021
LOW 4 IN 1939, 1960
PRECIP 2.11 INS. IN 1901
SNOWFALL 6.3 INS. IN 1934
PEAK GUST 66e MPH W IN 1980
TODAY’S REPORT PREPARED BY: Matt Douglas/Andrew Sullivan
