Wednesday, July 3, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, JULY 3, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0413E
SUNSET: 1924E
WARM WITH COMFORTABLE HUMIDITY LEVELS UNDER SUNNY SKIES….
It’s another nice day today for early July standards with plenty
of sunshine through a very thin veil of cirrus clouds. Warm
temperatures and reasonable humidity levels is making it another
good day for outdoor activities.
Temperatures are just a touch above normal for today with
readings getting into the low to mid 80s. Despite it being a
bit warmer today than yesterday, the dew point still remains
in the 50s, which is very pleasant for this time of year.
The wind has been on the light side today. The speed has only
averaged around 8mph. The direction has been fairly variable
to this point in the day. The peak gust so far is 20mph which
occurred just after 4am this morning.
Visibility has been more limited today than in recent days.
It started the day around 50 miles, but has slipped a bit to
just around 45 miles early this afternoon.
The maximum temperature so far today is 83F, which is 2 degrees
above the normal high of 81F. The minimum temperature since
midnight is 62F, which is 1 degree below the normal low of 63F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus/castellanus, thin scattered cirrus
Temperature: 70F; Dew Point: 57F; Relative Humidity: 62%
Wind: NW @ 8 kts
Sea-level pressure: 1024.0 mb; 30.24 in. Hg: rising, then falling
Visibility: 50 miles
6-hr Max temp: 70F
6-hr Min temp: 62F
24-hr Precip: 0.00 inches
BHO SA 1155 140 SCT 250 -SCT 50 240/70/57/3108/024/ 8/081 58001
10070 20062
10 A.M.
Weather: Thin scattered cirrus, few cumulus all quadrants,
few altocumulus distant SSW-W-N
Temperature: 81F; Dew Point: 56F; Relative Humidity: 43%
Wind: S @ 3 kts, wind light
Sea-level pressure: 1023.6 mb; 30.23 in. Hg: rising, then falling
Visibility: 50 miles
3-hr Precip: 0.00 inches
BHO SA 1455 250 -SCT 50 236/81/56/1703/023/ FEW CU ALQDS
FEW AC DSNT SSW-W-N WND LGT/ 8/251 58004
1 P.M.
Weather: Thin broken cirrus, few cumulus distant SSE-W-NW,
few altocumulus/castellanus distant WSW-N
Temperature: 81F; Dew Point: 52F; Relative Humidity: 37%
Wind: S @ 7 kts
Sea-level pressure: 1022.3 mb; 30.19 in. Hg: falling, then more rapidly
Visibility: 45 miles, hazy
6-hr Max temp: 83F
6-hr Min temp: 70F
6-hr Precip: 0.00 inches
BHO SA 1755 E250 -BKN 45 223/81/52/1807/019/ FEW CU DSNT SSE-W-NW
FEW AC/ACC DSNT WSW-N HAZY/ 8/281 58013 10083 20070
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SUMMARY FOR TUESDAY, JULY 2, 2024
TEMPERATURE (DEGREES F)
MAX…….80 NORMAL…..80
MIN…….60 NORMAL…..62
MEAN……70 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-1
TOTAL DEPARTURE FOR THE MONTH……………………..-2 [-1.2 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……..-1
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….5 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH……………10 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE SEASON………….188 DEPARTURE…….+36
TOTAL COOLING UNITS LAST SEASON TO DATE……..138 DEPARTURE…….+50
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)……….E20 N @ 04:42 A.M.
VECTOR #1 (1-Sec)……….20 N @ 04:42 A.M.
VECTOR #2 (1-Sec)……….20 N @ 04:42 A.M.
DAVIS #1……………….18 NNE @ 04:42 A.M.
DAVIS #2 ………………19 NNE @ 05:17 A.M.
RMY #1 (Instantaneous)…..19 N @ 04:42 A.M.
RMY #2 (Instantaneous)…..20 N @ 05:17 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 N @ 03:06 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 @ 01:59 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 02:38 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 E @ 11:21 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 S @ 09:48 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 ENE @ 11:21 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 N @ 02:38 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….8.4 E [201 total miles]
VECTOR #1……………..8.6
VECTOR #2……………..9.1
DAVIS #1………………8.8 ENE
DAVIS #2………………8.9 ENE
RMY #1………………..8.7 ENE
RMY #2………………..9.1 NE
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..0.07 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE YEAR (2024)…….35.75 DEPARTURE…..+8.29
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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 The low since midnight is 62F, the daily normal low is 63F.
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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 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.98 IN 2021
PEAK GUST 52 MPH NW IN 1963
RECORDS FOR JULY 4
HIGH 99F IN 1911
LOW 48F IN 1914
PRECIP 2.48 IN 2014
PEAK GUST 50e MPH WNW IN 1949
TODAY’S REPORT PREPARED BY: Matt Douglas
