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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, FEBRUARY 24, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0628E
SUNSET: 1728E
MISSING WIND DATA DUE T0 FROZEN WIND INSTRUMENTS…
Many of the wind instruments have been reading erroneously due
to a thin layer of glaze. Data will be considered missing and
will be designated by the letter M in the preliminary information
section. Large chunks of ice could be heard falling from the
instruments throughout the day. Today has been breezy with wind
from the NW. Gusts became stronger in the afternoon with a peak
gust so far of 34 kts (39 MPH) at 1:05 P.M. and multiple gusts
over 30 kts (35 MPH).
Snow from yesterday continued overnight into early this morning
leaving a storm total of 4.0 inches. of snow and 1.15 inches of
liquid precipitation. Snow ended before 7 A.M. besides a short
duration snow squall that moved in around 8:30 a.m. and was over
just after 9:00 a.m. leaving an additional trace of precipitation.
Visibility has been variable in the morning due to a thin fog layer
and increased humidity. By the afternoon visibility increased to
60 miles and humidity decreased from 93% to 74%. Cloud cover was a
mixture of broken cumulus and stratocumulus throughout the day.
The temperature has been fairly consistent today but has begun
to decrease from a high so far of 33F to 27F at the 1 P.M.
observation. Temperatures are expected to continue to drop
overnight.
The high so far today is 33F, which is 6 degrees below the
normal maximum of 39F. The low since midnight is 26F, which
is 4 degrees above the normal low of 21F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus
Temperature: 30F; Dew Point: 29F; Relative Humidity: 93%
Wind: WNW @ 16G20 kts
Sea-level pressure: 1013.9 mb; 29.94 in. Hg: rising, then more rapidly
Visibility: 60 miles NNE-SSW, 40 miles SSW-N, 20 miles N-NNE
6-hr Max temp: 30F
6-hr Min temp: 26F
24-hr Precip: 0.49 ins.
24-hr Snowfall: 2.8 ins.
Snow Depth: 3 ins.
BHO SA 1155 50 SCT 60 139/30/29/2916G20/994/ THN GLZ ALL SFCS VSBY 20
N-NNE 40 SSW-NNE THN FG N-NNE TOTAL NEW SNW PST 24 HRS 2.8 INS/ 8/5//
4/003 53011 70049 10030 20026
10 A.M.
Weather: Broken cumulus, broken stratocumulus
Temperature: 31F; Dew Point: 28F; Relative Humidity: 88%
Wind: NW @ 16G29 kts; Peak wind: 29 kts (33 MPH) at 9:48 A.M.
Sea-level pressure: 1017.3mb; 30.04 in. Hg: rising, then more rapidly
Visibility: 60 miles
3-hr Precip: Trace
3-hr Snowfall: Trace
BHO SA 1455 40 BKN 60 BKN 60 173/31/28/3116G29/004 NEW SNW PST 3 HRS
TRACE PK WND 3129/48/ 8/5// 53034 6000/
1 P.M.
Weather: Broken cumulus, broken stratocumulus
Temperature: 27F; Dew Point: 22F; Relative Humidity: 74%
Wind: NW @ 23G31 kts; Peak wind: 33 kts (38 MPH) at 12:07 P.M.
Sea-level pressure: 1020.5 mb; 30.13 in. Hg: rising steadily
Visibility: 60 miles
6-hr Max temp: 33F
6-hr Min temp: 27F
6-hr Precip: Trace
6-hr Snowfall: Trace
Snow Depth: 2 ins.
BHO SA 1755 BKN 45 BKN 55 60 205/27/22/3223G31/013/ NEW SNW PST 6 HRS
TRACE PK WND 3233/07/ 8/5// 4/002 52032 10033 20027
————————————————————–
SUMMARY FOR THURSDAY, FEBRUARY 23, 2023
TEMPERATURE (DEGREES F)
MAX…….32 NORMAL…..39
MIN…….25 NORMAL…..21
MEAN……29 NORMAL…..30
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-1
TOTAL DEPARTURE FOR THE MONTH……………….+162 [+6.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………36 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………..695 DEPARTURE……-162
TOTAL HEATING UNITS FOR THE SEASON…………3518 DEPARTURE……-742
TOTAL HEATING UNITS LAST SEASON TO DATE…….3877 DEPARTURE……-359
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………29 ENE @ 12:58 A.M.
VECTOR #1 (1-Sec)……….M
VECTOR #2 (1-Sec)……….M
DAVIS #1……………….M
DAVIS #2 ………………M
RMY #1 (Instantaneous)…..M
RMY #2 (Instantaneous)…..M
MERLIN…………………29 NE
RICHARDS (C5C) (Inst)……26 @ 8:47 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 ENE @ 8:05 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..M
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..M
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………M
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………M
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 ENE @ 8:05 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..12 ENE @ 8:38 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 8:05 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…… 9.5 NNE [229 total miles]
VECTOR #1……………. M
VECTOR #2……………. M
DAVIS #1…………….. M
DAVIS #2…………….. M
RMY #1………………. 6.6 N
RMY #2………………. 7.0 N
RICHARDS (C5C)……….. 6.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.49 DEPARTURE…..+0.34
TOTAL PRECIPITATION FOR THE MONTH…………..1.44 DEPARTURE…..-1.77
TOTAL PRECIPITATION FOR THE YEAR……………8.23 DEPARTURE…..+0.52
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..2.8 DEPARTURE……+2.1
TOTAL SNOWFALL FOR THE MONTH………………..5.6 DEPARTURE……-9.6
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……20.5 DEPARTURE…..-28.4
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
VEC1: Vector #1 1-second gust
RMY: R.M. Young 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 30/18/24/-2/T/T/552/92 17 NW VEC1 N/A RMY 20
2/2 38/19/29/+3/0.00/0.0/518/86 25 SW VEC1 N/A RMY 29
2/3 28/-11/9/-17/T/T/557/92 56 WNW VEC1 N/A RMY 64
2/4 14/-14/0/-26/0.00/0.0/473/78 45 NW VEC1 N/A RMY 51
2/5 49/14/32/+5/0.00/0.0/359/59 38 SW VEC1 N/A RMY 43
2/6 47/30/39/+12/0.00/0.0/025/04 28 NE VEC1 N/A RMY 29
2/7 31/22/27/0/0.01/0.1/461/75 29 SSW VEC1 N/A RMY 33
2/8 46/31/39/+12/0.00/0.0/413/67 30 NW VEC1 N/A RMY 34
2/9 49/33/41/+14/T/0.0/149/24 31 SSE VEC1 N/A RMY 32
2/10 60/31/46/+19/0.00/0.0/603/97 43 W VEC1 N/A RMY 51
2/11 43/31/37/+10/0.00/0.0/625/100 41 WNW VEC1 N/A RMY 46
2/12 48/28/38/+10/0.00/0.0/339/54 22 SW VEC1 N/A RMY 24
2/13 42/33/38/+10/0.00/0.0/069/11 28 NE VEC1 N/A RMY 36
2/14 50/34/42/+14/0.00/0.0/475/75 30 NW VEC1 33 NW RMY 35
2/15 56/35/46/+18/0.00/0.0/279/44 39 SSW VEC1 44 SSW RMY 49
2/16 61/50/56/+28/T/0.0/108/17 29 W VEC1 31 W RMY 34
2/17 56/23/40/+11/0.06/0.1/000/00 44 NNW VEC1 46 NNW RMY 46
2/18 39/19/29/0/0.00/0.0/643/100 41 NW VEC1 42 NNW RMY 47
2/19 44/30/37/+8/0.00/0.0/129/20 32 S VEC1 35 S RMY 36
2/20 59/41/50/+21/0.00/0.0/208/32 35 W VEC1 36 W RMY 40
2/21 41/31/36/+7/0.22/1.4/000/00 26 W VEC1 27 W RMY 27
2/22 42/30/36/+6/0.23/0.5/…/.. 33 WNW VEC1 35 WNW RMY 36
2/23 32/25/29/36/…./…/…/.. 29 NNW VEC1 M M RMY 21
2/24 The low since midnight is 26F, the daily normal low is 21F
DAILY RECORDS
02/03/2023: NEW RECORD MINIMUM TEMPERATURE OF -11F,
THIS BEATS THE OLD RECORD OF -7F SET IN 1955
02/04/2023: NEW RECORD MINIMUM TEMPERATURE OF -14F,
THIS BEATS THE OLD RECORD OF -4F SET IN 1886 AND 1908
02/10/2023: NEW RECORD MAXIMUM TEMPERATURE OF 60F,
THIS BEATS THE OLD RECORD OF 56F SET IN 1909
02/16/2023: NEW RECORD HIGH MINIMUM TEMPERATURE OF 50F,
THIS BEATS THE OLD RECORD OF 41F SET IN 1976. THIS ALSO
TIES THE WARMEST MINIMUM TEMPERATURE FOR FEBRUARY SET
IN 2018
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR FEBRUARY 24
HIGH 71F IN 2017 [RECORD HIGH FOR MONTH]
LOW -11F IN 1894
PRECIP 3.10 INCHES IN 1969
SNOWFALL 27.4 INCHES IN 1969 [HIGHEST CALENDAR DAY AMOUNT ON RECORD]
PEAK GUST 63 MPH NE IN 1998
RECORDS FOR FEBRUARY 25
HIGH 68F IN 2017
LOW -10F IN 1894
PRECIP 2.40 INCHES IN 1981
SNOWFALL 13.6 INCHES IN 1966
PEAK GUST 76 MPH S IN 2016
TODAY’S REPORT PREPARED BY: Kaitlin Geagan
