Sunday, March 9, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, MARCH 9, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0606E
SUNSET: 1744E
PLENTY OF SUNSHINE WITH SEASONABLE TEMPERATURES AND LESS WIND….
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.
Yesterday was another windy day with the peak gust exceeding 50mph for
the 4th day in a row. As a matter of fact, we’ve only have 1 day so far
this month (not including today) that has had a peak gust under 40mph!
So far, March is living up to its reputation of being the windiest
month of the year.
For today, we saw plenty of sunshine through the morning, but mid and
upper level clouds are increasing in coverage as we move through the
early afternoon hours. Regardless, it’s a fairly nice day out there
despite the persistent breeziness.
Temperatures are fairly seasonable with a low in the mid 20s this
morning and a high so far in the low to mid 40s. However, with the
dew point holding in the teens, it is making the air feel a bit
chillier, especially with the breeze blowing.
While winds aren’t as strong as the past 4 days, it’s still on the
breezy side out there. A general westerly wind has been averaging
around 13mph for the day so far. As the temperature rises and the
atmosphere mixes from aloft, gusts have been exceeding 30mph at times
from mid morning into early this afternoon. The peak gust so far for
the day is 35mph, which occurred at 12:13pm.
Visibility is quite decent today with the view generally 70-80 miles.
The maximum temperature for today is 43F degrees, which is 1 degree
above the normal high of 42F. The minimum temperature since midnight
is 25F degrees, which is equal to the normal low of 25F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant WNW and distant ESE
Temperature: 27F; Dew Point: 15F; Relative Humidity: 60%
Wind: W @ 10 kts
Sea-level pressure: 1011.5 mb; 29.87 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 27F
6-hr Min temp: 25F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 80 115/27/15/2810/987/ FEW SC DSNT WNW AND DSNT ESE/
8/500 51014 10027 20025
10 A.M.
Weather: Clear, few altocumulus all quadrants, few cirrus all quadrants
Temperature: 36F; Dew Point: 18F; Relative Humidity: 47%
Wind: WSW @ 10G18 kts
Sea-level pressure: 1011.2 mb; 29.86 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 70 112/36/18/2410G18/986/ FEW AC ALQDS FEW CI ALQDS/
8/051 58003
1 P.M.
Weather: Broken altocumulus lenticularis, broken altocumulus,
broken cirrus, virga distant SW-NW
Temperature: 41F; Dew Point: 19F; Relative Humidity: 40%
Wind: W @ 20G31 kts, peak wind W 36mph at 12:47 P.M.
Sea-level pressure: 1008.5 mb; 29.78 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 43F
6-hr Min temp: 27F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E70 BKN 100 BKN 250 BKN 70 085/41/19/2720G31/978/
FEW SC ALQDS VIRGA DSNT SW-NW PK WND 2631/47/ 8/041 56027 10043 20027
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SUMMARY FOR SATURDAY, MARCH 8, 2025
TEMPERATURE (DEGREES F)
MAX…….40 NORMAL…..42
MIN…….27 NORMAL…..24
MEAN……34 NORMAL…..33
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH…………………….+14 [+1.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….31 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………248 DEPARTURE…….-15
TOTAL HEATING UNITS FOR THE SEASON………….4429 DEPARTURE……-266
TOTAL HEATING UNITS LAST SEASON TO DATE……..4082 DEPARTURE……+347
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)………..55 W @ 10:30 A.M.
VECTOR #1 (1-Sec)……….55 W @ 12:19 P.M.
VECTOR #2 (1-Sec)……….57 W @ 10:02 A.M.
DAVIS #1……………….55 W @ 10:31 A.M.
DAVIS #2 ………………55 WNW @ 10:02 A.M.
RMY #1 (Instantaneous)…..58 W @ 12:19 P.M.
RMY #2 (Instantaneous)…..61 WNW @ 10:03 A.M.
MERLIN…………………54 NW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………43 WNW @ 10:04 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..39 @ 10:03 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..42 @ 02:25 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………42 W @ 10:03 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………43 WNW @ 10:04 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..36 WNW @ 10:03 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..41 WNW @ 10:03 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..20.1 WNW [483 total miles]
VECTOR #1………………19.0
VECTOR #2………………20.4
DAVIS #1……………….20.1 W
DAVIS #2……………….20.3 WNW
RMY #1…………………18.0 W
RMY #2…………………19.8 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…………..1.18 DEPARTURE…..-0.20
TOTAL PRECIPITATION FOR THE YEAR (2025)……..6.83 DEPARTURE…..-3.05
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……-4.9
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-22.7
————————————————————–
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 The low since midnight is 25F, 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 9
HIGH 75 IN 2016
LOW 1 IN 2007
PRECIP 2.67 INS. IN 1998
SNOWFALL 6.3 INS. IN 2001
PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH]
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
TODAY’S REPORT PREPARED BY: Matt Douglas
