Friday, January 24, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JANUARY 24, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0705E
SUNSET: 1648E
NEARING SEASONABLE TEMPERATURES TODAY WITH PLENTY OF SUNSHINE
Friday started with a pastel purple and pinkish hued sunrise and
has featured mostly clear skies for much of the day. Clouds were
seen offshore for much of the day and by late morning had moved
out of sight. This afternoon we had a slight increase in some
closer stratocumulus clouds in our sky, but sunshine and blue skies
have been the theme today.
Temperatures have still been below normal, but closer to seasonable
since the arctic air mass has finally moved from our region. We are
just a few degrees below normal which is quite an improvement from
the double digit departures we were dealing with earlier this week.
The dew points have also recovered a bit, ranging from 8F to 14F
today. We are still impacted by dry air overall, but not as frigid!
Winds have been steady and on the lighter side today. Windflow was
from the WNW this morning and have shifted slightly to the NW by mid
morning. The average speed so far is around 11mph and the peak gust
occurred at 12:12am this morning at 21mph.
Hazy conditions have persisted throughout the day, leaving us with
only about 30 miles of visibility.
The maximum temperature for today is 32F degrees, which is 2 degrees
below the normal high of 34F. The minimum temperature since midnight
is 14F degrees, which is 3 degrees below the normal low of 17F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus offshore distant ENE-E-S
Temperature: 15F; Dew Point: 7F; Relative Humidity: 71%
Wind: W @ 9 kts
Sea-level pressure: 1018.7 mb; 30.08 in. Hg: steady, then rising
Visibility: 30 miles, hazy
6-hr Max temp: 17F
6-hr Min temp: 14F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1155 CLR 30 187/15/7/2809/008/ FEW SC OFFSHR DSNT ENE-E-S HAZY/
8/500 4/003 53006 10017 20014
10 A.M.
Weather: Clear, few stratocumulus offshore distant ENE-E-SSE
Temperature: 25F; Dew Point: 14F; Relative Humidity: 62%
Wind: WNW @ 7 kts
Sea-level pressure: 1020.0 mb; 30.12 in. Hg: rising, then more slowly
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 200/25/14/3007/012/ FEW SC OFFSHR DSNT ENE-E-SSE HAZY/
8/500 51013
1 P.M.
Weather: Clear, few stratocumulus all quadrants
Temperature: 32F; Dew Point: 15F; Relative Humidity: 50%
Wind: NW @ 7 kts
Sea-level pressure: 1019.0 mb; 30.09 in. Hg: falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 32F
6-hr Min temp: 15F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1755 CLR 30 190/32/15/3007/009/ FEW SC ALQDS HAZY/ 8/500
4/003 56010 10032 20015
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SUMMARY FOR THURSDAY, JANUARY 23, 2025
TEMPERATURE (DEGREES F)
MAX…….30 NORMAL…..34
MIN…….12 NORMAL…..17
MEAN……21 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….-5
TOTAL DEPARTURE FOR THE MONTH…………………….-31 [-1.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………44 DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH…………..909 DEPARTURE…….+29
TOTAL HEATING UNITS FOR THE SEASON…………2841 DEPARTURE……-249
TOTAL HEATING UNITS LAST SEASON TO DATE…….2716 DEPARTURE……+125
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)………..29 SW @ 01:33 P.M.
VECTOR #1 (1-Sec)……….29 SW @ 11:38 A.M.
VECTOR #2 (1-Sec)……….30 NW @ 11:38 A.M.
DAVIS #1……………….29 SW @ 11:38 A.M.
DAVIS #2 ………………30 SW @ 11:38 A.M.
RMY #1 (Instantaneous)…..30 SW @ 01:40 P.M.
RMY #2 (Instantaneous)…..31 SW @ 11:38 A.M.
MERLIN…………………28 SW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 SW @ 01:33 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 @ 01:33 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 01:33 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 SSW @ 01:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 SW @ 01:33 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..22 SW @ 01:33 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 SW @ 01:33 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..10.6 NNW [254 total miles]
VECTOR #1………………10.9
VECTOR #2………………11.3
DAVIS #1……………….10.7 SW
DAVIS #2……………….11.2 SW
RMY #1…………………10.6 SW
RMY #2…………………11.3 SW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..1.52 DEPARTURE…..-1.87
TOTAL PRECIPITATION FOR THE YEAR (2025)……..1.52 DEPARTURE…..-1.87
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..7.4 DEPARTURE……-5.9
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……20.0 DEPARTURE……-8.4
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PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
1/1 47/36/42/+13/0.55/0.0/000/00 44 W VEC1 45 W RMY 44
1/2 42/31/37/+9/T/T/534/97 60 W VEC1 60 WNW RMY 63
1/3 36/26/31/+3/0.00/0.0/446/81 48 W VEC1 48 W RMY 51
1/4 29/22/26/-2/0.00/0.0/453/82 43 NW VEC1 43 NW RMY 48
1/5 32/18/25/-3/0.00/0.0/088/16 39 WNW VEC1 39 WNW RMY 40
1/6 23/15/19/-9/0.00/0.0/000/00 31 NNW VEC1 31 NNW RMY 31
1/7 24/11/18/-9/T/T/450/81 43 WNW VEC1 42 WNW RMY 47
1/8 27/14/21/-6/0.00/0.0/550/99 48 WNW VEC1 48 WNW RMY 52
1/9 25/13/19/-8/T/T/223/40 46 NW VEC1 47 NW RMY 51
1/10 40/19/30/+3/0.00/0.0/560/100 39 NW VEC1 39 NW RMY 42
1/11 30/21/26/-1/0.12/1.7/000/00 25 NW VEC1 26 NW RMY 28
1/12 36/19/28/+1/0.00/0.0/556/99 35 NNW VEC1 35 NNW RMY 39
1/13 39/26/33/+7/0.00/0.0/192/34 26 WNW VEC1 27 WNW RMY 27
1/14 32/20/26/0/0.00/0.0/537/95 44 WNW VEC1 44 WNW RMY 45
1/15 29/16/23/-3/0.00/0.0/504/89 37 NW VEC1 37 NW RMY 38
1/16 30/13/22/-4/T/T/301/53 20 W VEC1 20 SSW RMY 20
1/17 35/16/26/0/T/T/410/72 20 S VEC1 20 SSW RMY 20
1/18 44/27/36/+10/0.26/0.0/046/08 36 S VEC1 37 S RMY 39
1/19 43/27/35/+9/0.51/4.6/276/48 26 N VEC1 28 NNW RMY 29
1/20 27/9/18/-8/0.08/1.1/460/80 32 NW VEC1 32 NW RMY 36
1/21 18/6/12/-14/0.00/0.0/173/30 21 W VEC1 21 WNW RMY 21
1/22 21/2/12/-14/0.00/0.0/545/94 20 NNW VEC1 20 NNW RMY 20
1/23 30/12/21/-5/0.00/0.0/…/.. 29 SW VEC1 29 SW RMY 30
1/24 The low since midnight is 14F, the daily normal low is 17F.
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JANUARY 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 JANUARY 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.40 INS. IN 1935
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996
RECORDS FOR JANUARY 25
HIGH 56F IN 2010
LOW -9F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972
TODAY’S REPORT PREPARED BY: Amanda Joly
