Monday, May 27, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, MAY 27, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0412E
SUNSET: 1911E
MOSTLY GRAY SKIES FOR MEMORIAL DAY….
Weather-wise, today is undoubtedly the worst of the holiday weekend.
We began the morning in dense fog, which lifted around 9am. A fog bank
remains to our north through the 1pm observation, likely along a warm front.
Heading into the afternoon, we have experienced some breaks of sunshine,
but cumulus and stratocumulus clouds fill the majority of the sky.
Temperatures were slow to rise this morning, going from the low to mid 60s
by noontime. With some breaks of sun, we have now made it to the lower
70s, and will likely climb a bit further. Dew points have risen as well, from
the low to mid 60s.
Winds have been on the slower side yet again, with an average to this point
of 6mph. Since the 1pm observation, however, a notable increase in speed has
taken place. Our peak gust to this point occurred at 1:03pm, with a speed of
approximately 28mph.
Visibility has improved since this morning, when views were limited to
1/16 of a mile by dense fog. As the cloud base has lifted, the view has improved
modestly. The prevailing visibility has reached 30 miles, but remains lower to
the north, again due to the fog bank in place.
The maximum temperature so far today is 73F degrees, which is
3 degrees above the normal high of 70F. The minimum temperature
since midnight is 61F degrees, which is 10 degrees above the
normal low of 51F.
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Today’s Observations:
7 A.M.
Weather: Fog, sky obscured, vertical visibility 200ft
Temperature: 61F; Dew Point: 61F; Relative Humidity: 98%
Wind: E @ 7 kts
Sea-level pressure: 1016.6 mb; 30.02 in. Hg: rising, then falling
Visibility: 1/16 mile, fog
6-hr Max temp: 65F
6-hr Min temp: 61F
24-hr Precip: 0.02 inches
BHO SA 1155 X W2 1/16F 166/61/61/0807/002/ 8//// 50007 70002 10065 20061
10 A.M.
Weather: Overcast stratus, fog bank WNW-N-ENE
Temperature: 63F; Dew Point: 61F; Relative Humidity: 93%
Wind: ENE @ 3 kts, wind light
Sea-level pressure: 1016.0 mb; 30.00 in. Hg: falling unsteadily
Visibility: 30 miles, 5 miles NW-N-NE, thin fog all quadrants
3-hr Precip: 0.00 inches
BHO SA 1455 E4 OVC 30 160/63/61/0603/000/ F BNK WNW-N-ENE
THN F ALQDS VSBY 5 NW-N-NE WND LGT/ 8/6// 57006
1 P.M.
Weather: Broken cumulus, broken stratocumulus, fog bank NW-N-NE
Temperature: 73F; Dew Point: 65F; Relative Humidity: 77%
Wind: SSE @ 8G18 kts
Sea-level pressure: 1014.1 mb; 29.95 in. Hg: falling, then more rapidly
Visibility: 30 miles, 12 miles NW-N-NE, thin fog all quadrants
6-hr Max temp: 73F
6-hr Min temp: 61F
6-hr Precip: 0.00 inches
BHO SA 1755 E18 BKN 32 BKN 30 141/73/65/1608G18/995/ F BNK NW-N-NE
THN F ALQDS VSBY 12 NW-N-NE/ 8/800 58019 10073 20061
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SUMMARY FOR SUNDAY, MAY 26, 2024
TEMPERATURE (DEGREES F)
MAX…….79 NORMAL…..69
MIN…….55 NORMAL…..51
MEAN……69 NORMAL…..60
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+9
TOTAL DEPARTURE FOR THE MONTH…………………….+34 [+1.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH…………..208 DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE SEASON…………5365 DEPARTURE……-752
TOTAL HEATING UNITS LAST SEASON TO DATE…….5179 DEPARTURE……+186
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….4 DEPARTURE……..+3
TOTAL COOLING UNITS FOR THE MONTH……………27 DEPARTURE…….+10
TOTAL COOLING UNITS FOR THE SEASON…………..27 DEPARTURE……..+7
TOTAL COOLING UNITS LAST SEASON TO DATE………25 DEPARTURE……..+2
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 S @ 07:56 P.M.
VECTOR #1 (1-Sec)……….22 S @ 07:59 P.M.
VECTOR #2 (1-Sec)……….22 S @ 08:04 P.M.
DAVIS #1……………….21 S @ 07:53 P.M.
DAVIS #2 ………………32 S @ 07:57 P.M.
RMY #1 (Instantaneous)…..22 S @ 07:56 P.M.
RMY #2 (Instantaneous)…..22 S @ 07:59 P.M.
MERLIN…………………20 S
RICHARDS (C5C) (Inst)…….M
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S @ 08:00 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 07:58 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 07:57 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 S @ 08:06 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 07:57 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 S @ 07:57 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 S @ 07:57 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……….M
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.0 SSW [169 total miles]
VECTOR #1……………..7.6
VECTOR #2……………..8.0
DAVIS #1………………7.2 SSE
DAVIS #2………………7.9 S
RMY #1………………..7.4 S
RMY #2………………..8.0 SSE
RICHARDS (C5C)…………..M
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..3.94 DEPARTURE…..+0.79
TOTAL PRECIPITATION FOR THE YEAR (2024)…….28.90 DEPARTURE…..+6.97
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-42.9
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PRELIMINARY CLIMATE SUMMARY FOR MAY 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)
5/1 53/42/48/-5/0.06/0.0/177/21 18 ESE VEC1 18 ESE RMY 18
5/2 69/44/57/+3/0.21/0.0/535/63 35 NE VEC1 36 NE RMY 35 TSTM
5/3 57/44/51/-3/0.02/0.0/408/48 24 NE VEC1 24 NE RMY 25
5/4 55/44/50/-4/0.00/0.0/589/69 22 ENE VEC1 21 NE RMY 21
5/5 51/42/47/-8/0.35/0.0/000/00 21 S VEC1 22 S RMY 21
5/6 75/46/61/+6/0.02/0.0/343/40 20 SW VEC1 18 SW RMY 20
5/7 78/55/67/+12/0.00/0.0/851/99 23 NW VEC1 24 NE RMY 23
5/8 62/49/56/+1/0.60/0.0/078/09 30 S VEC1 31 S RMY 31 TSTM
5/9 63/45/54/-2/0.00/0.0/588/68 33 NW VEC1 33 NW RMY 34
5/10 56/42/49/-7/0.00/0.0/572/66 28 ENE VEC1 27 ENE RMY 27
5/11 55/39/47/-9/0.00/0.0/617/71 26 ENE VEC1 26 NE RMY 27
5/12 60/41/51/-6/T/0.0/305/35 16 WSW VEC1 15 SW RMY 15
5/13 68/45/57/0/0.00/0.0/663/76 25 S VEC1 25 SE RMY 26
5/14 76/48/62/+5/T/0.0/718/82 33 SSW VEC1 33 SSW RMY 32
5/15 73/53/63/+6/0.46/0.0/079/09 24 ENE VEC1 24 E RMY 24
5/16 56/52/54/-4/1.02/0.0/141/16 32 ENE VEC1 32 ENE RMY 31
5/17 66/50/58/0/0.00/0.0/662/75 29 ENE VEC1 28 ENE RMY 27
5/18 58/50/54/0/0.26/0.0/000/00 32 NE VEC1 33 NE RMY 34
5/19 53/48/51/-7/0.22/0.0/000/00 30 NE VEC1 30 NE RMY 30
5/20 65/48/57/-2/0.00/0.0/452/51 18 S VEC1 17 SSE RMY 18
5/21 84/50/67/+8/0.00/0.0/648/73 22 SSW VEC1 22 SSW RMY 22
5/22 88/56/72/+13/0.00/0.0/854/96 32 SSW VEC1 32 SSW RMY 33
5/23 75/61/68/+9/0.42/0.0/…/.. 31 SSW VEC1 30 SSW RMY 31 TSTM
5/24 82/59/71/+11/0.00/0.0/…/.. 38 W VEC1 38 W RMY 37
5/25 80/55/68/+8/0.00/0.0/…/.. 24 S VEC1 23 SW RMY 25
5/26 79/58/69/+9/0.30/0.0/…/.. 22 S VEC1 22 S RMY 22
5/27 The low since midnight is 61F, the daily normal low is 51F.
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MAY 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 MAY 27
HIGH 92F IN 1914
LOW 36F IN 1915
PRECIP 1.40 INS IN 1898
PEAK GUST 55 S IN 1956
RECORDS FOR MAY 28
HIGH 92F IN 2016
LOW 39F IN 1917
PRECIP 2.48 INS 1906
PEAK GUST 51e MPH NE IN 1946
TODAY’S REPORT PREPARED BY: Joshua Polen
