Thursday, February 27, 2025

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

THURSDAY, FEBRUARY 27, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0622E
SUNSET: 1732E

A TOUCH OF LIGHT SNOW VERY EARLY THIS MORNING CHANGING TO PERIODS
OF LIGHT RAIN….

Our latest weather system started as a period of light snow very early
this morning. It managed to accumulate to 0.1″ before changing over to
rain. Periods of light rain have been occurring off and on throughout
the day. 0.04″ of liquid has been measured so far for the day, all of
it up until 7am this morning, with only an additional 0.01″ being
recorded since then as the rain has been mainly on the very light side
to this point.

Temperatures cooled to 33F this morning during the snow, but have been
slowly rising through the morning reaching the upper 40s by early this
afternoon.

Winds have been steady for the most part today, averaging around 12mph
out of the south-southeast and south. It has been gusty at times with
the peak gust so far for the day 32mph, occurring just before 1pm.

Visibility has been limited at times by precipitation, as low as a few
miles during the snow, otherwise it’s been averaging about 20-30 miles
for the most part today.

The maximum temperature for today is 49F degrees, which is 9 degrees
above the normal high of 40F. The minimum temperature since midnight
is 33F degrees, which is 11 degrees above the normal low of 22F.

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Today’s Observations:

7 A.M.
Weather: Overcast nimbostratus, very light rain
Temperature: 33F; Dew Point: 31F; Relative Humidity: 92%
Wind: SE @ 10 kts
Sea-level pressure: 1015.3 mb; 29.98 in. Hg: falling unsteadily
Visibility: 30 miles, thin fog
6-hr Max temp: 36F
6-hr Min temp: 33F
24-hr Precip: 0.04 inches
24-hr Snowfall: 0.1 inches
Snow Depth: 1 inch
BHO SA 1155 E35 OVC 30R- 153/33/31/1310/998/ THN F ALQDS PCPN VRY LGT
TOTAL NEW SNW PST 24 HRS 0.1 INS/ 8/02/ 4/001 57013 6004/ 70004 10036
20033

10 A.M.
Weather: Overcast stratus, very light rain
Temperature: 38F; Dew Point: 36F; Relative Humidity: 93%
Wind: SSE @ 12G21 kts
Sea-level pressure: 1010.0 mb; 29.83 in. Hg: falling, then more slowly
Visibility: 15 miles, thin fog
3-hr Precip: Trace
3-hr Snowfall: 0.0 inches
BHO SA 1455 E35 OVC 15R- 100/38/36/1512G21/983/ THN F ALQDS PCPN VRY LGT
R-B20/ 8/6// 56053 6000/

1 P.M.
Weather: Broken stratocumulus, overcast altostratus, very light rain
Temperature: 49F; Dew Point: 44F; Relative Humidity: 82%
Wind: SSW @ 18G28 kts, peak wind SSW 32mph at 12:51 P.M.
Sea-level pressure: 1003.7 mb; 29.64 in. Hg: falling, then more slowly
Visibility: 20 miles, 10 miles SW-W, thin fog
6-hr Max temp: 49F
6-hr Min temp: 33F
6-hr Precip: 0.01 inches
6-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1755 E30 BKN 75 OVC 20R- 037/49/44/2118G28/964/ THN F ALQDS
PCPN VRY LGT SUN DMLY VSBL VSBY 10 SW-W R-B01E09B23 PK WND 2028/51/
8/51/ 4/000 56063 6001/ 10049 20033

————————————————————–

SUMMARY FOR WEDNESDAY, FEBRUARY 26, 2025

TEMPERATURE (DEGREES F)
MAX…….51 NORMAL…..39
MIN…….35 NORMAL…..22
MEAN……43 NORMAL…..31

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+12
TOTAL DEPARTURE FOR THE MONTH…………………….-27 [-1.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….22 DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE MONTH……………988 DEPARTURE…….+27
TOTAL HEATING UNITS FOR THE SEASON………….4131 DEPARTURE……-233
TOTAL HEATING UNITS LAST SEASON TO DATE……..3813 DEPARTURE……+318

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)………..31 NW @ 01:31 P.M.
VECTOR #1 (1-Sec)……….31 WNW @ 12:58 P.M.
VECTOR #2 (1-Sec)……….34 WNW @ 01:29 P.M.
DAVIS #1……………….31 W @ 01:29 P.M.
DAVIS #2 ………………32 NW @ 01:29 P.M.
RMY #1 (Instantaneous)…..33 WNW @ 01:29 P.M.
RMY #2 (Instantaneous)…..34 WNW @ 01:29 P.M.
MERLIN…………………30 NW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 WNW @ 02:40 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 @ 01:30 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 11:35 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 WNW @ 01:31 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 WNW @ 11:35 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 NW @ 01:31 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 WNW @ 11:35 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.2 WNW [317 total miles] VECTOR #1………………12.9
VECTOR #2………………14.1
DAVIS #1……………….13.4 WNW
DAVIS #2……………….13.8 NW
RMY #1…………………12.4 WNW
RMY #2…………………13.7 WNW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.04 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..3.28 DEPARTURE…..-0.40
TOTAL PRECIPITATION FOR THE YEAR (2025)……..5.63 DEPARTURE…..-2.55

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.1 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………….13.1 DEPARTURE……-3.9
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-16.6

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/1 32/10/21/-5/0.07/0.4/000/00 35 NNW VEC1 34 NNW RMY 35
2/2 24/5/15/-11/0.10/1.0/260/43 22 SE VEC1 25 SE RMY 24
2/3 42/24/33/+7/0.05/0.5/321/53 35 SSW VEC1 35 SSW RMY 35
2/4 41/20/31/+5/0.00/0.0/542/89 51 NW VEC1 51 NW RMY 55
2/5 27/14/21/-6/0.00/0.0/562/92 32 NW VEC1 32 NW RMY 32
2/6 32/16/24/-3/0.22/1.0/000/00 26 SE VEC1 28 SE RMY 25
2/7 38/22/30/+3/0.00/0.0/542/88 48 WNW VEC1 49 WNW RMY 50
2/8 35/19/27/0/0.09/1.1/433/70 23 W VEC1 22 W RMY 23
2/9 29/23/26/-1/0.30/3.0/006/01 24 N VEC1 24 N RMY 24
2/10 33/19/26/-1/0.00/0.0/343/55 26 WNW VEC1 27 NW RMY 28
2/11 30/14/22/-5/0.00/0.0/232/37 23 WSW VEC1 22 WSW RMY 23
2/12 32/24/28/0/0.04/0.4/006/01 29 ENE VEC1 29 ENE RMY 28
2/13 38/28/33/+5/0.42/0.7/000/00 52 WNW VEC1 52 WNW RMY 55
2/14 32/20/26/-2/0.00/0.0/634/100 50 NW VEC1 50 NW RMY 54
2/15 28/15/22/-6/0.29/3.3/108/17 20 ESE VEC1 20 ESE RMY 18
2/16 35/22/29/+1/1.66/1.6/000/00 45 W VEC1 45 W RMY 48 TSTM
2/17 28/16/22/-7/T/T/597/93 70 WNW VEC1 68 WNW RMY 72
2/18 25/13/19/-10/0.00/0.0/645/100 51 WNW VEC1 52 WNW RMY 54
2/19 30/12/21/-8/0.00/0.0/635/98 33 WNW VEC1 33 WNW RMY 34
2/20 29/11/20/-9/T/T/046/07 26 NW VEC1 27 NW RMY 27
2/21 33/17/25/-4/0.00/0.0/470/72 38 NW VEC1 39 NW RMY 40
2/22 35/13/24/-6/0.00/0.0/505/77 30 NW VEC1 30 NW RMY 33
2/23 42/25/34/+4/0.00/0.0/395/60 30 WNW VEC1 31 WNW RMY 28
2/24 45/25/35/+5/0.00/0.0/449/68 33 SSW VEC1 34 SSW RMY 35
2/25 55/35/45/+15/T/0.0/153/23 31 SSW VEC1 31 SSW RMY 32
2/26 51/35/43/+12/0.00/0.0/620/93 31 NW VEC1 31 WNW RMY 33