Thursday, February 15, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, FEBRUARY 15, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0641E
SUNSET: 1716E
SUNSHINE THE FIRST HALF OF THE DAY, BUT CLOUDS QUICKLY ADVANCE
AFTER NOON….
It was a brilliant, but cold start to the day with wall to wall
sunshine and temperatures starting off in the upper teens. The
sun was with us through the noon hour before thickening high
clouds overspread the area, greatly filtering it.
Temperatures have reached the mid 30s, so all in all not a bad
day as readings are very close to normal levels for this time of
year. The dew point is quite low today with readings starting the
day in the upper single digits, then recovering a bit to the low
teens during the mid-late morning hours. But it has dropped again
into the upper single digits by the 1pm observation.
The wind is quite a bit lighter than yesterday with an average
speed so far around 13mph. The wind has been pretty steady out
of the northwest to west-northwest. The peak gust so far for the
day occurred just after 1am with a value of 31mph.
Visibility has been exceptional today, holding at around 80 miles
all day!
The maximum temperature so far today is 35F degrees, which is 2
degrees below the normal high of 37F. The minimum temperature
since midnight is 18F degrees, which is 1 degree below the normal
low of 19F.
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Today’s Observations:
7 A.M.
Weather: Clear, few cirrus all quadrants
Temperature: 19F; Dew Point: 9F; Relative Humidity: 63%
Wind: NW @ 9 kts
Sea-level pressure: 1018.8 mb; 30.09 in. Hg: rising, then more rapidly
Visibility: 80 miles
6-hr Max temp: 21F
6-hr Min temp: 18F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 4 inches
BHO SA 1155 CLR 80 188/19/9/3109/009/ FEW CI ALQDS/ 8/001 4/004 53014
10021 20018
10 A.M.
Weather: Clear, few cirrus distant SSE-W and distant N-NE
Temperature: 28F; Dew Point: 12F; Relative Humidity: 50%
Wind: NW @ 13G18 kts
Sea-level pressure: 1018.8 mb; 30.09 in. Hg: rising, then falling
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 80 188/28/12/3113G18/009/ FEW CI DSNT SSE-W AND DSNT
N-NE/ 8/001 50000
1 P.M.
Weather: Broken cirrus
Temperature: 34F; Dew Point: 8F; Relative Humidity: 35%
Wind: WNW @ 9G16 kts
Sea-level pressure: 1017.8 mb; 30.06 in. Hg: rising, then falling
Visibility: 80 miles
6-hr Max temp: 35F
6-hr Min temp: 19F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1755 E250 BKN 80 178/34/8/2909G16/006/ 8/004 4/003 58010 10035
20019
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SUMMARY FOR WEDNESDAY, FEBRUARY 14, 2024
TEMPERATURE (DEGREES F)
MAX…….29 NORMAL…..37
MIN…….21 NORMAL…..19
MEAN……25 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………-3
TOTAL DEPARTURE FOR THE MONTH………………….+105 [+7.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………40 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..428 DEPARTURE……-105
TOTAL HEATING UNITS FOR THE SEASON…………3394 DEPARTURE……-542
TOTAL HEATING UNITS LAST SEASON TO DATE…….3292 DEPARTURE……+102
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)……….E53 NW @ 03:56 P.M.
VECTOR #1 (1-Sec)……….53 NW @ 03:56 P.M.
VECTOR #2 (1-Sec)……….53 NW @ 03:10 P.M.
DAVIS #1……………….50 NW @ 03:56 P.M.
DAVIS #2 ………………49 NNW @ 03:12 P.M.
RMY #1 (Instantaneous)…..54 NW @ 01:18 P.M.
RMY #2 (Instantaneous)…..55 NW @ 01:32 P.M.
MERLIN…………………51 NW
RICHARDS (C5C) (Inst)……52 @ 03:56 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 NW @ 03:13 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..34 @ 03:10 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..36 @ 12:57 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………35 WNW @ 02:35 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………35 NW @ 03:12 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..33 NW @ 02:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 WNW @ 12:57 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………33 @ 02:35 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……19.3 NW [462 total miles]
VECTOR #1……………….M
VECTOR #2…………….19.5
DAVIS #1………………..M
DAVIS #2………………..M
RMY #1………………….M
RMY #2……………….19.5 NW
RICHARDS (C5C)…………..M
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.70 DEPARTURE…..-1.18
TOTAL PRECIPITATION FOR THE YEAR (2024)……..9.94 DEPARTURE…..+3.56
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..4.3 DEPARTURE……-5.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……25.2 DEPARTURE…..-17.8
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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 39/22/31/+4/0.00/0.0/597/98 29 N VEC1 29 N RMY 30
2/6 35/26/31/+4/0.00/0.0/251/41 26 N VEC1 26 N RMY 26
2/7 39/26/33/+6/0.00/0.0/436/71 21 NE VEC1 21 NE RMY 24
2/8 44/29/37/+10/0.00/0.0/457/74 16 S VEC1 16 S RMY 16
2/9 47/30/39/+12/0.00/0.0/229/37 31 SSW VEC1 31 SSW RMY 31
2/10 58/35/47/+20/0.02/0.0/385/62 26 NW VEC1 26 NW RMY 30
2/11 45/34/40/+13/0.00/0.0/119/19 30 NW VEC1 30 NW RMY 31
2/12 47/29/38/+10/0.00/0.0/470/75 21 N VEC1 20 N RMY 20
2/13 35/25/30/+2/0.65/4.3/000/00 40 NNE VEC1 41 NNE RMY M
2/14 29/21/25/-3/0.00/0.0/562/89 53 NW VEC1 53 NW RMY 54
2/15 The low since midnight is 18F, the daily normal low is 19F
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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 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 2.07 INCHES IN 1940
SNOWFALL 14.4 INCHES IN 2015
PEAK GUST 94e MPH WNW IN 1946
RECORDS FOR FEBRUARY 16
HIGH 62F IN 1954
LOW -16F IN 1943
PRECIP 1.91 INCHES IN 1958
SNOWFALL 18.6 INCHES IN 1958
PEAK GUST 78 MPH W IN 1967
TODAY’S REPORT PREPARED BY: Matt Douglas
