Wednesday, August 7, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, AUGUST 7, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0444E
SUNSET: 1856E
A SOAKING RAIN OVERNIGHT, REMAINING CLOUDY INTO EARLY THIS
AFTERNOON WITH COOL TEMPERATURES CONTINUING….
A steady soaking rainfall occurred overnight into early this
morning. 0.70″ of rain was measured through 7am this morning.
The rain tapered off by mid morning with mainly cloudy skies
persisting into early this afternoon.
Temperatures are once again on the cool side thanks to the
clouds and onshore wind. Readings started the day in the upper
50s, and have “warmed” into the mid 60s by the 1pm observation.
This air is in stark contrast to the hot and humid air mass
we’ve been dealing with since essentially early July. This is
definitely a nice respite in what’s normally the dog days of
summer.
Winds have been fairly steady today, mainly out of a east-
northeast to northeasterly direction. The average speed for
the day so far is around 9mph. The peak gust so far is 23mph
which occurred just before 3am this morning.
Visibility has improved since early this morning. The view was
under 1/4 mile for a time prior to sunrise, but has been
gradually improving through the day, reaching around 50 miles
by early this afternoon.
The maximum temperature so far today is 66F, which is 15 degrees
below the normal high of 81F. The minimum temperature since
midnight is 57F, which is 7 degrees below the normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratus, few breaks in overcast distant WSW,
few lower stratus fractus all quadrants
Temperature: 58F; Dew Point: 58F; Relative Humidity: 99%
Wind: ENE @ 8G16 kts
Sea-level pressure: 1017.5 mb; 30.05 in. Hg: falling, then rising
Visibility: 15 miles, occasionally lower N-NNE, thin fog
6-hr Max temp: 58F
6-hr Min temp: 57F
24-hr Precip: 0.70 inches
BHO SA 1155 E2 OVC 15 175/58/58/0708G16/005/ FEW BINOVC DSNT WSW
FEW LWR STFRA ALQDS HIER CLDS VSBL DSNT WSW THN F ALQDS R-E17
VSBY OCNLY LWR N-NNE/ 8/6// 53006 6014/ 70070 10058 20057
10 A.M.
Weather: Broken stratocumulus, overcast altostratus, few lower
stratus fractus distant ESE-SW
Temperature: 62F; Dew Point: 59F; Relative Humidity: 88%
Wind: NE @ 6 kts, wind light
Sea-level pressure: 1018.0 mb; 30.06 in. Hg: steady, then rising
Visibility: 40 miles, thin fog
3-hr Precip: Trace
BHO SA 1455 E12 BKN 70 OVC 40 180/62/59/0406/006/ FEW LWR STFRA
DSNT ESE-SW THN F ALQDS WND LGT/ 8/52/ 53005 6000/
1 P.M.
Weather: Broken cumulus, broken stratocumulus, broken altostratus,
broken cirrus
Temperature: 64F; Dew Point: 57F; Relative Humidity: 78%
Wind: E @ 7 kts
Sea-level pressure: 1018.2 mb; 30.07 in. Hg: rising, then steady
Visibility: 50 miles
6-hr Max temp: 66F
6-hr Min temp: 58F
6-hr Precip: Trace
BHO SA 1755 E15 BKN 40 BKN 80 BKN 250 BKN 50 182/64/57/0907/007/
8/811 51002 6000/ 10066 20058
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SUMMARY FOR TUESDAY, AUGUST 6, 2024
TEMPERATURE (DEGREES F)
MAX…….73 NORMAL…..82
MIN…….60 NORMAL…..64
MEAN……67 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-6
TOTAL DEPARTURE FOR THE MONTH…………………….+35 [+5.6 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……..-1
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-8
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE MONTH……………83 DEPARTURE…….+36
TOTAL COOLING UNITS FOR THE SEASON………….580 DEPARTURE……+146
TOTAL COOLING UNITS LAST SEASON TO DATE……..449 DEPARTURE……+131
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)……….E26 ENE @ 08:25 A.M.
VECTOR #1 (1-Sec)……….26 ENE @ 09:29 A.M.
VECTOR #2 (1-Sec)……….26 ENE @ 08:25 A.M.
DAVIS #1……………….25 ENE @ 08:25 A.M.
DAVIS #2 ………………24 ENE @ 08:25 A.M.
RMY #1 (Instantaneous)…..26 ENE @ 08:24 A.M.
RMY #2 (Instantaneous)…..25 ENE @ 08:25 A.M.
MERLIN…………………24 ENE
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 ENE @ 09:31 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 08:26 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 08:26 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 ENE @ 08:26 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 E @ 08:26 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 ENE @ 08:26 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 ENE @ 08:26 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.8 ENE [187 total miles]
VECTOR #1……………..7.8
VECTOR #2……………..8.5
DAVIS #1………………8.2 ENE
DAVIS #2………………8.3 ENE
RMY #1………………..7.9 NE
RMY #2………………..8.4 NE
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.70 DEPARTURE…..+0.56
TOTAL PRECIPITATION FOR THE MONTH…………..0.95 DEPARTURE…..+0.15
TOTAL PRECIPITATION FOR THE YEAR (2024)…….39.20 DEPARTURE…..+7.70
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PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 92/71/82/+9/T/…/.. 24 W VEC1 24 W RMY 23
8/2 94/73/84/+11/0.01/…/.. 31 SSW VEC1 31 SSW RMY 30 TSTM
8/3 92/75/84/+11/0.00/…/.. 29 W VEC1 28 W RMY 28
8/4 85/68/77/+4/0.20/…/.. 29 WSW VEC1 29 WSW RMY 31 TSTM
8/5 90/67/79/+6/T/…/.. 28 SSW VEC1 28 SSW RMY 29
8/6 73/60/67/-6/0.56/…/.. 26 ENE VEC1 26 ENE RMY 26
8/7 The low since midnight is 57F, the daily normal low is 64F.
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AUGUST DAILY RECORDS TO DATE
8/3 RECORD HIGH MINIMUM TEMPERATURE OF 75F,
TIED THE PREVIOUS RECORD SET IN 2020
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 7
HIGH 96F IN 2022
LOW 51F IN 2004
PRECIP 3.32 INCHES IN 1926
PEAK GUST 51 MPH NE 1975
RECORDS FOR AUGUST 8
HIGH 97F IN 2022
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958
TODAY’S REPORT PREPARED BY: Matt Douglas
