Monday, February 5, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, FEBRUARY 5, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0654E
SUNSET: 1703E
CLEAR SKIES ONCE AGAIN TODAY WITH A BRISK COLD WIND….
Yet another day with wall to wall sunshine through the early
afternoon hours is definitely helping to continue to raise
spirits after the week plus of cloudy conditions. However,
there is a layer of low clouds well offshore that is gradually
backing in toward the coast as a powerful ocean storm off the
Canadian Maritimes expands westward.
It is cold out there today however, with a stiff north wind and
very low dew point values. Temperatures have reached the upper
30s early this afternoon, which is a bit above normal for this
time of year, but the dew point has plummeted into the single
digits! This level of dry crisp air is adding a decided chill
to the air, especially with the brisk wind blowing.
As mentioned, the wind has been on the gusty side. It’s been
averaging at around 12mph out of the north. The highest gust so
far occurred just before the 10am observation with a value of
29mph. However, frequent gusts of 20-25mph have been the theme
most of the day.
Visibility has been excellent today with a view of around 70 miles.
The maximum temperature so far today is 37F degrees, which is
2 degrees above the normal high of 35F. The minimum temperature
so far since midnight is 22F degrees, which is 4 degrees above
the normal low of 18F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus offshore distant ENE
Temperature: 22F; Dew Point: 13F; Relative Humidity: 66%
Wind: NNW @ 9G16 kts
Sea-level pressure: 1012.4 mb; 29.90 in. Hg: steady, then rising
Visibility: 70 miles
6-hr Max temp: 27F
6-hr Min temp: 22F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1155 CLR 70 124/22/13/3409G16/990/ FEW SC OFFSHR DSNT ENE/
8/500 4/000 53005 10027 20022
10 A.M.
Weather: Clear, few cirrus distant W
Temperature: 31F; Dew Point: 5F; Relative Humidity: 34%
Wind: N @ 12G25 kts
Sea-level pressure: 1012.7 mb; 29.91 in. Hg: rising, then steady
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 70 127/31/5/3612G25/991/ FEW CI DSNT W/ 8/001 51003
1 P.M.
Weather: Clear, few stratocumulus distant NNE-ESE, few cirrus
distant W
Temperature: 36F; Dew Point: 5F; Relative Humidity: 27%
Wind: N @ 10G18 kts
Sea-level pressure: 1011.7 mb; 29.88 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 37F
6-hr Min temp: 22F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1755 CLR 70 117/36/5/3610G18/988/ FEW SC DSNT NNE-ESE
FEW CI DSNT W/ 8/501 4/000 58010 10037 20022
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SUMMARY FOR SUNDAY, FEBRUARY 4, 2024
TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..35
MIN…….20 NORMAL…..18
MEAN……30 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+4
TOTAL DEPARTURE FOR THE MONTH……………………+27 [+6.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………35 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..129 DEPARTURE…….-26
TOTAL HEATING UNITS FOR THE SEASON…………3095 DEPARTURE……-463
TOTAL HEATING UNITS LAST SEASON TO DATE…….3021 DEPARTURE…….+74
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E28 NNW @ 07:38 P.M.
VECTOR #1 (1-Sec)……….28 NNW @ 09:06 P.M.
VECTOR #2 (1-Sec)……….26 NNW @ 09:06 P.M.
DAVIS #1……………….25 NNW @ 07:38 P.M.
DAVIS #2 ………………25 NW @ 07:47 P.M.
RMY #1 (Instantaneous)…..27 NNW @ 07:38 P.M.
RMY #2 (Instantaneous)…..26 NNW @ 09:06 P.M.
MERLIN…………………25 N
RICHARDS (C5C) (Inst)……26 @ 07:38 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 NNW @ 08:11 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 07:39 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 08:06 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 NNW @ 07:38 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 N @ 07:48 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 NNW @ 07:39 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NNW @ 08:06 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 07:39 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.4 NNW [249 total miles]
VECTOR #1…………….10.4
VECTOR #2…………….10.7
DAVIS #1……………..10.5 NNW
DAVIS #2……………..10.6 N
RMY #1……………….10.1 NNW
RMY #2……………….10.6 NNW
RICHARDS (C5C)………..10.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.03 DEPARTURE…..-0.52
TOTAL PRECIPITATION FOR THE YEAR (2024)……..9.27 DEPARTURE…..+4.22
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-2.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……20.9 DEPARTURE…..-15.5
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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 40/30/35/+9/0.00/0.0/012/02 25 SW VEC1 24 SW RMY 26
2/2 39/31/35/+9/0.03/T/000/00 23 N VEC1 24 N RMY 25
2/3 35/26/31/+5/0.00/0.0/338/56 26 N VEC1 26 NNW RMY 28
2/4 39/20/30/+4/0.00/0.0/607/100 28 NNW VEC1 28 NNW RMY 27
2/5 The low since midnight is 22F, the daily normal low is 18F
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FEBRUARY 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 FEBRUARY 5
HIGH 65F IN 1991
LOW -14F IN 1918
PRECIP 1.62 INS. IN 2016
SNOWFALL 16.0 INS. IN 1907
PEAK GUST 67 MPH WNW IN 1969
RECORDS FOR FEBRUARY 6
HIGH 54F IN 1909
LOW -10F IN 1895
PRECIP 1.88 INS. IN 1896
SNOWFALL 13.0 INS. IN 1978 [BLIZZARD OF 1978]
PEAK GUST 84e MPH NE IN 1978
TODAY’S REPORT PREPARED BY: Matt Douglas
