Wednesday, April 10, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, APRIL 10, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0511E
SUNSET: 1821E
IT TURNED OUT TO BE A NICE DAY WITH SUNSHINE AND MILD TEMPERATURES….
Today has turned out to be better than expected with plenty of
filtered sunshine up until about noon-time. Clouds are now
increasing and thickening as more mid and high level clouds are
being introduced to our skies making for overcast conditions by
the 1pm observation.
The temperature has reached the low to mid 60s once again early
this afternoon, so it has been quite a pleasant day. The dew point
has been holding in the mid 30s, so the air is still on the dry side.
The wind has been fairly steady today, mainly out of a southerly
direction. It’s been averaging at around 12mph so far for the day.
It does get gusty at times with values reaching between 25-30mph.
Visibility has been limited today due to haziness, with the view
generally between 35-40 miles.
The maximum temperature so far today is 65F degrees, which is 11
degrees above the normal high of 54F. The minimum temperature since
midnight is 38F degrees, which is 2 degrees above the normal low
of 36F.
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Today’s Observations:
7 A.M.
Weather: Thin broken cirrus, few altocumulus/castellanus distant WSW-NW-NNE
Temperature: 43F; Dew Point: 34F; Relative Humidity: 69%
Wind: SSE @ 12 kts
Sea-level pressure: 1021.2 mb; 30.16 in. Hg: rising, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 43F
6-hr Min temp: 38F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E250 -BKN 35 212/43/34/1512/016/ FEW AC/ACC DSNT WSW-NW-NNE
HAZY/ 8/081 53009 10043 20038
10 A.M.
Weather: Thin broken cirrus, few altocumulus/castellanus all quadrants
Temperature: 57F; Dew Point: 34F; Relative Humidity: 41%
Wind: S @ 6 kts, wind light
Sea-level pressure: 1021.3 mb; 30.16 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 -BKN 40 213/57/34/1806/016/ FEW AC/ACC ALQDS HAZY
WND LGT/ 8/081 50001
1 P.M.
Weather: Scattered altocumulus/castellanus, broken cirrostratus,
overcast cirrus, sun dimly visible
Temperature: 63F; Dew Point: 37F; Relative Humidity: 38%
Wind: S @ 10G18 kts
Sea-level pressure: 1020.5 mb; 30.14 in. Hg: falling, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 65F
6-hr Min temp: 43F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 100 SCT E200 BKN 250 OVC 40 205/63/37/1910G18/014/
SUN DMLY VSBL HAZY/ 8/086 56008 10065 20043
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SUMMARY FOR TUESDAY, APRIL 9, 2024
TEMPERATURE (DEGREES F)
MAX…….63 NORMAL…..53
MIN…….40 NORMAL…..35
MEAN……52 NORMAL…..44
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+8
TOTAL DEPARTURE FOR THE MONTH…………………….-3 [-0.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………13 DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH…………..215 DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE SEASON…………4856 DEPARTURE……-693
TOTAL HEATING UNITS LAST SEASON TO DATE…….4714 DEPARTURE……+142
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)……….E22 ENE @ 02:55 P.M.
VECTOR #1 (1-Sec)……….21 ENE @ 02:55 P.M.
VECTOR #2 (1-Sec)……….21 ENE @ 02:55 P.M.
DAVIS #1……………….21 E @ 02:55 P.M.
DAVIS #2 ………………20 E @ 10:12 A.M.
RMY #1 (Instantaneous)…..21 ENE @ 02:55 P.M.
RMY #2 (Instantaneous)…..21 ENE @ 03:05 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……20 @ 02:55 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 ENE @ 03:32 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 02:56 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 02:49 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 ENE @ 02:56 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 E @ 02:49 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 ENE @ 02:56 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 ENE @ 02:49 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 @ 02:55 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.0 ESE [239 total miles]
VECTOR #1……………..9.9
VECTOR #2…………….10.8
DAVIS #1……………..10.5 E
DAVIS #2……………..10.7 ENE
RMY #1………………..9.9 ENE
RMY #2……………….10.7 NE
RICHARDS (C5C)………..10.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..2.51 DEPARTURE…..+0.98
TOTAL PRECIPITATION FOR THE YEAR (2024)…….22.56 DEPARTURE…..+7.01
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.7 DEPARTURE……-0.8
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-41.6
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PRELIMINARY CLIMATE SUMMARY FOR APRIL 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
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
4/1 56/40/48/+7/0.00/0.0/153/20 20 SSE VEC1 20 SSE RMY 19
4/2 47/35/41/0/0.07/0.0/115/15 25 E VEC1 25 E RMY 25
4/3 41/34/38/-4/1.10/T/000/00 53 E VEC1 53 E RMY 53
4/4 36/32/34/-8/1.25/0.7/…/.. 63 ENE VEC1 64 ENE RMY 68
4/5 45/31/38/-5/0.01/T/…/.. 33 WNW VEC1 31 WNW RMY 33
4/6 43/33/38/-5/0.08/…/.. 35 N VEC1 35 N RMY 35
4/7 48/34/41/-3/T/0.0/…/.. 32 N VEC1 31 N RMY 31
4/8 66/36/51/+7/0.00/0.0/…/.. 23 WNW VEC1 23 WNW RMY 22
4/9 63/40/52/+8/0.00/0.0/…/.. 22 ENE VEC1 21 ENE RMY 21
4/10 The low since midnight is 38F, the daily normal low is 36F.
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APRIL 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 APRIL 10
HIGH 83 IN 1922
LOW 20 IN 1985
PRECIP 2.40 IN. IN 1935
SNOWFALL 10.1 IN. IN 1996
PEAK GUST 66 MPH WNW IN 1967
RECORDS FOR APRIL 11
HIGH 85 IN 2017
LOW 19 IN 1909
PRECIP 1.72 IN. IN 2003
SNOWFALL 9.5 IN. IN 1958
PEAK GUST 65 MPH NW IN 1963
TODAY’S REPORT PREPARED BY: Matt Douglas
