Tuesday, March 11, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MARCH 11, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0602E
SUNSET: 1746E
SUNNY AND UNSEASONABLE MILD, BUT CONTINUED ON THE WINDY SIDE….
Skies have featured plenty of sunshine all day with only a few high
thin cirrus floating by at times. With temperatures 20 degrees above
normal, it feels like a bonafide spring day out there. However, we
can’t seem to shake the wind as gusts over 30mph are occurring once
again.
As mentioned, temperatures are well above normal today with readings
reaching the low 60s by early this afternoon. With dew point values
in the low to mid 30s, relative humidity levels have dropped below
40%. This is causing an elevated fire risk for today with conditions
continuing to be on the dry side.
Winds are once again on the breezy side out there (starting to sound
like a broken record). A south-southwesterly wind has been averaging
around 14mph for the day so far. Gusts have been reaching into the
30-35mph range at times. The peak gust so far is 37mph, which occurred
just before 1pm.
Visibility was a bit limited this morning, but has improved nicely
by early this afternoon thanks to the lower relative humidity levels.
The view has improved from 30 miles to 60 miles.
The maximum temperature for today is 62F degrees, which is 20 degrees
above the normal high of 42F. The minimum temperature since midnight
is 37F degrees, which is 12 degrees above the normal low of 25F.
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Today’s Observations:
7 A.M.
Weather: Clear, few cirrus all quadrants
Temperature: 39F; Dew Point: 36F; Relative Humidity: 86%
Wind: SSW @ 13 kts
Sea-level pressure: 1011.0 mb; 29.86 in. Hg: falling, then rising
Visibility: 30 miles, thin fog
6-hr Max temp: 42F
6-hr Min temp: 37F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 30 110/39/36/1913/986/ FEW CI ALQDS THN F ALQDS/
8/001 53008 10042 20037
10 A.M.
Weather: Clear. few cirrus distant all quadrants
Temperature: 55F; Dew Point: 34F; Relative Humidity: 45%
Wind: SSW @ 13G18 kts
Sea-level pressure: 1010.2 mb; 29.83 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 40 102/55/34/1913G18/983/ FEW CI DSNT ALQDS HAZY/
8/001 58008
1 P.M.
Weather: Clear, few cirrus distant all quadrants
Temperature: 61F; Dew Point: 32F; Relative Humidity: 35%
Wind: SSW @ 18G32 kts, peak wind SSW 37 mph at 12:54 P.M.
Sea-level pressure: 1007.0 mb; 29.74 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 62F
6-hr Min temp: 39F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 60 070/61/32/1918G32/974/ FEW CI DSNT ALQDS
PK WND 2032/54/ 8/001 58032 10062 20039
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SUMMARY FOR MONDAY, MARCH 10, 2025
TEMPERATURE (DEGREES F)
MAX…….60 NORMAL…..42
MIN…….33 NORMAL…..25
MEAN……47 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+13
TOTAL DEPARTURE FOR THE MONTH…………………….+29 [+2.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….18 DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE MONTH……………296 DEPARTURE…….-30
TOTAL HEATING UNITS FOR THE SEASON………….4477 DEPARTURE……-281
TOTAL HEATING UNITS LAST SEASON TO DATE……..4132 DEPARTURE……+345
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)………..38 WNW @ 10:05 A.M.
VECTOR #1 (1-Sec)……….38 WNW @ 10:05 A.M.
VECTOR #2 (1-Sec)……….41 W @ 10:05 A.M.
DAVIS #1……………….38 W @ 10:05 A.M.
DAVIS #2 ………………39 WNW @ 10:05 A.M.
RMY #1 (Instantaneous)…..39 WNW @ 10:05 A.M.
RMY #2 (Instantaneous)…..42 W @ 10:05 A.M.
MERLIN…………………37 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………28 WNW @ 10:38 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 @ 10:38 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28 @ 10:06 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………27 W @ 10:38 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 WNW @ 09:57 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 WNW @ 10:38 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 W @ 10:06 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.4 WNW [297 total miles]
VECTOR #1………………12.4
VECTOR #2………………12.9
DAVIS #1……………….12.5 W
DAVIS #2……………….12.5 W
RMY #1…………………11.9 W
RMY #2…………………12.8 W
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..1.18 DEPARTURE…..-0.57
TOTAL PRECIPITATION FOR THE YEAR (2025)……..6.83 DEPARTURE…..-3.42
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……-6.1
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-23.9
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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 60/33/47/+13/0.00/0.0/…/.. 38 WNW VEC1 38 WNW RMY 39
3/11 The low since midnight is 37F, 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 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
RECORDS FOR MARCH 12
HIGH 72 IN 2012
LOW 2 IN 1885
PRECIP 2.87 INS. IN 1888
SNOWFALL 9.7 INS. IN 1959
PEAK GUST 66 MPH SE IN 1962
TODAY’S REPORT PREPARED BY: Matt Douglas/Andrew Sullivan
