Tuesday, July 16, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, JULY 16, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0422E
SUNSET: 1918E
REMAINING HOT AND HUMID WITH A BREEZE….
Similarly to yesterday, it is hot and humid yet again today, with
temperatures reaching 90F by the early afternoon. There is
one area of improvement over yesterday though, as while it remains sticky,
the dew point has lowered a touch, holding between 69F and 70F.
We began the morning with mostly sunny skies, featuring scattered altocumulus
and cirrus. The altocumulus quickly cleared out, but the thin cirrus has stuck
around. By late morning, cumulus began developing well off to the west through
northeast, though coverage has decreased by early afternoon.
Winds have been steady today, and the comfortable breeze is making the
outdoors a bit more tolerable. The average speed so far is 11 mph, primarily
out of the west-southwest. The peak gust took place this morning at 8:30am,
with a value of around 26mph.
Visibility began the morning at only 20 miles due to haziness. As the day has
progressed, views have improved to 50 miles.
The maximum temperature so far today is 90F, which is 8 degrees
above the normal high of 82F. The minimum temperature since
midnight is 72F, which is 8 degrees above the normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus, thin scattered cirrus
Temperature: 76F; Dew Point: 69F; Relative Humidity: 79%
Wind: WSW @ 8G16 kts
Sea-level pressure: 1009.7 mb; 29.82 in. Hg: rising, then more slowly
Visibility: 20 miles, hazy
6-hr Max temp: 76F
6-hr Min temp: 72F
24-hr Precip: 0.07 inches
BHO SA 1155 150 SCT 250 -SCT 20 097/76/69/2508G16/982/ HAZY/ 8/051
51011 70007 10076 20072
10 A.M.
Weather: Thin scattered cirrus, few cumulus distant W-N-NE
Temperature: 83F; Dew Point: 69F; Relative Humidity: 68%
Wind: W @ 10G17 kts
Sea-level pressure: 1009.5 mb; 29.81 in. Hg: falling, then rising
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 -SCT 40 095/83/69/2710G17/981/ FEW CU DSNT W-N-NE
HAZY/ 8/201 55002
1 P.M.
Weather: Thin broken cirrus, few small cumulus S-W-N-NNE
Temperature: 89F; Dew Point: 70F; Relative Humidity: 53%
Wind: WSW @ 10G16 kts
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: rising, then falling
Visibility: 50 miles
6-hr Max temp: 90F
6-hr Min temp: 76F
6-hr Precip: 0.00 inches
BHO SA 1755 E250 -BKN 50 094/89/70/2510G16/981/ FEW SML CU S-W-N-NNE/
8/101 58001 10090 20076
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SUMMARY FOR MONDAY, JULY 15, 2024
TEMPERATURE (DEGREES F)
MAX…….92 NORMAL…..82
MIN…….70 NORMAL…..64
MEAN……81 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+8
TOTAL DEPARTURE FOR THE MONTH…………………….+65 [+4.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-4
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………16 DEPARTURE……..+8
TOTAL COOLING UNITS FOR THE MONTH…………..175 DEPARTURE…….+62
TOTAL COOLING UNITS FOR THE SEASON………….353 DEPARTURE……+101
TOTAL COOLING UNITS LAST SEASON TO DATE……..272 DEPARTURE…….+81
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated
F420C (Official)……….E28 WSW @ 11:00 A.M.
VECTOR #1 (1-Sec)……….27 WSW @ 11:01 A.M.
VECTOR #2 (1-Sec)……….27 WSW @ 10:35 A.M.
DAVIS #1……………….27 W @ 11:01 A.M.
DAVIS #2 ………………30 S @ 07:15 P.M.
RMY #1 (Instantaneous)…..28 WSW @ 11:29 A.M.
RMY #2 (Instantaneous)…..28 WSW @ 10:28 A.M.
MERLIN…………………26 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 W @ 10:32 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 11:02 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 11:30 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 WSW @ 11:02 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 07:17 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 WSW @ 11:02 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 WSW @ 11:30 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.9 SW [261 total miles]
VECTOR #1…………….11.2
VECTOR #2…………….11.6
DAVIS #1……………..10.9 SW
DAVIS #2……………..11.6 SW
RMY #1……………….10.9 SW
RMY #2……………….11.7 SW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.07 DEPARTURE…..-0.05
TOTAL PRECIPITATION FOR THE MONTH…………..1.20 DEPARTURE…..-0.48
TOTAL PRECIPITATION FOR THE YEAR (2024)…….36.88 DEPARTURE…..+7.97
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PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
7/1 77/63/70/-1/0.07/722/79 29 N VEC1 27 N RMY 28 TSTM
7/2 80/60/70/-1/0.00/886/97 20 N VEC1 20 N RMY 19
7/3 84/62/73/+1/0.00/856/94 25 S VEC1 25 S RMY 26
7/4 85/62/74/+2/0.04/392/43 28 SSW VEC1 28 SSW RMY 28
7/5 84/68/76/+4/0.22/146/16 29 SSW VEC1 29 SSW RMY 29
7/6 77/71/74/+2/0.10/009/01 31 SW VEC1 33 SSW RMY 33
7/7 88/72/80/+8/0.00/345/38 15 SW VEC1 15 SW RMY 14
7/8 91/71/81/+9/0.00/780/86 17 NW VEC1 18 NW RMY 18
7/9 88/72/80/+7/T/534/59 26 SSW VEC1 27 SSW RMY 29
7/10 88/72/80/+7/0.00/552/61 38 SSW VEC1 37 SSW RMY 38
7/11 87/71/79/+6/0.01/470/52 41 SSW VEC1 40 SSW RMY 41
7/12 85/69/77/+4/0.05/…/.. 32 SW VEC1 32 SW RMY 32
7/13 80/72/76/+3/0.64/…/.. 28 SW VEC1 25 SW RMY 26
7/14 88/69/79/+6/0.00/…/.. 18 SW VEC1 18 SW RMY 19
7/15 92/70/81/+8/0.07/…/.. 28 WSW VEC1 27 WSW RMY 28 TSTM
7/16 The low since midnight is 72F, the daily normal low is 64F.
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JULY 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 JULY 16
HIGH 94F IN 1968, 1980, 1983, 1999
LOW 50F IN 1903
PRECIP 2.56 INS IN 2023
WIND 48e MPH SW 1944
RECORDS FOR JULY 17
HIGH 96F IN 1999
LOW 47F IN 1892
PRECIP 1.39 INS IN 1989
WIND 46 MPH WNW IN 1971
TODAY’S REPORT PREPARED BY: Joshua Polen
