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Monday, February 17, 2025

February 17, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, FEBRUARY 17, 2025 ALL TIMES ARE…

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

MONDAY, FEBRUARY 17, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0637E
SUNSET:  1719E

COLD AND WINDY AS STORM DEPARTS….

Yesterday’s storm brought a lot of moisture our way! The storm total
liquid equivalent precip ended up at 1.95″. With the arctic airmass
arriving on the storm’s heels, the wet snow and puddles that remained
have turned into a sheet of ice, making it a bit treacherous out there.

The cold air has returned following the frontal passage late last night.
This morning, the low temperature was in the low 20s. With a strong wind
out of the west-northwest, we have only been able to reach the upper 20s
by the afternoon, despite decent sunshine. The wind chill has been stuck in
the upper single digits for much of the day.

The wind is undeniably the main story today! Our average speed for the day
so far is 29mph, with frequent gusts in the 45-55mph range. The peak gust
to this point occurred at 12:45pm, with a speed of 67mph.

Visibility was limited this morning due to virga, which was indicative of some
flurries flying to our north and to our south. Those have since dissipated,
providing us with increased views of up to 70 miles.

The maximum temperature for today is 28F degrees, which is 9 degrees
below the normal high of 37F. The minimum temperature since midnight
is 22F degrees, which is 2 degrees above the normal low of 20F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered stratocumulus, scattered nimbostratus,
virga distant WNW-N-NE and SE-SSW
Temperature: 22F; Dew Point: 14F; Relative Humidity: 69%
Wind: W @ 23G41 kts, peak wind W 53mph @ 6:06am
Sea-level pressure: 995.5 mb; 29.40 in. Hg: rising unsteadily
Visibility: 30 miles
6-hr Max temp: 26F
6-hr Min temp: 22F
24-hr Precip:  1.04 inches
24-hr Snowfall: Trace
Snow Depth: 5 inches
BHO SA 1155 35 SCT 50 SCT 30 955/22/14/2723G41/940/ VIRGA DSNT WNW-N-NE
AND SE-SSW PK WND 2746/06/ TOTAL NEW SNW PST 24 HRS TRACE/ 8/520 4/005
52028 70104 10026 20022

10 A.M.
Weather: Broken stratocumulus
Temperature: 24F; Dew Point: 12F; Relative Humidity: 60%
Wind: WNW @ 34G53 kts, peak wind WNW 61mph @ 9:45am
Sea-level pressure: 998.1 mb; 29.47 in. Hg: rising unsteadily
Visibility: 60 miles
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E45 BKN 60 981/24/12/2934G53/947/ PK WND 2953/45/ 8/500 52026

1 P.M.
Weather: Broken stratocumulus
Temperature: 26F; Dew Point: 12F; Relative Humidity: 55%
Wind: WNW @ 31G58 kts, peak wind WNW 67mph at 12:45pm
Sea-level pressure: 1000.6 mb; 29.55 in. Hg: rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 27F
6-hr Min temp: 22F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 4 inches
BHO SA 1755 E50 BKN 70 006/26/12/2931G58/955/ PK WND 2958/45/ 8/500 4/004
51025 10027 20022

————————————————————–

SUMMARY FOR SUNDAY, FEBRUARY 16, 2025

TEMPERATURE (DEGREES F)
MAX…….35   NORMAL…..37
MIN…….22   NORMAL…..20
MEAN……29   NORMAL…..28

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH…………………….-19 [-1.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………36  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………..626  DEPARTURE…….+20
TOTAL HEATING UNITS FOR THE SEASON…………3769  DEPARTURE……-241
TOTAL HEATING UNITS LAST SEASON TO DATE…….3464  DEPARTURE……+305

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)………..45 W    @   11:56 P.M.
VECTOR #1 (1-Sec)……….45 W    @   11:56 P.M.
VECTOR #2 (1-Sec)……….48 W    @   11:36 P.M.
DAVIS #1……………….45 W    @   11:56 P.M.
DAVIS #2 ………………45 W    @   11:36 P.M.
RMY #1 (Instantaneous)…..48 W    @   11:33 P.M.
RMY #2 (Instantaneous)…..48 W    @   11:55 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………32 W    @   11:37 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..32      @   11:35 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..32      @   11:38 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………33 W    @   11:35 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………33 W    @   11:38 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..31 W    @   11:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 W    @   11:38 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..15.5 E [372 total miles] VECTOR #1…………………M
VECTOR #2…………………M
DAVIS #1……………….14.6 ENE
DAVIS #2……………….14.3 ENE
RMY #1…………………13.7 ENE
RMY #2…………………14.1 NE
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..1.04 DEPARTURE…..+0.90
TOTAL PRECIPITATION FOR THE MONTH…………..3.24 DEPARTURE…..+1.08
TOTAL PRECIPITATION FOR THE YEAR (2025)……..5.59 DEPARTURE…..-1.07

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH……………….13.0 DEPARTURE……+2.4
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.0 DEPARTURE…..-10.3

————————————————————–

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/…/..        50 NW  VEC1 50 NW  RMY 54
2/15   28/15/22/-6/0.29/3.3/…/..        20 ESE VEC1 20 ESE RMY 18
2/16   35/22/29/+1/1.66/1.6/…/..        45 W   VEC1 45 W   RMY 48

2/17 The low since midnight is 22F, the daily normal low is 20F.

————————————————————–

FEBRUARY DAILY RECORDS TO DATE

NONE.

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR FEBRUARY 17
HIGH 61F IN 1981
LOW -16F IN 1896
PRECIP 1.86 INCHES IN 2003
SNOWFALL 20.0 INCHES IN 2003
PEAK GUST 72 MPH NW IN 1968

RECORDS FOR FEBRUARY 18
HIGH 65F IN 1981
LOW -10F IN 1958
PRECIP 1.97 INCHES IN 1887, IN 1952
SNOWFALL 9.2 INCHES IN 1952
PEAK GUST 70 MPH S IN 2008

TODAY’S REPORT PREPARED BY: Joshua Polen

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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