Friday, July 5, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JULY 5, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0414E
SUNSET: 1924E
SHOWERS TO START, LOW CLOUDS STICK AROUND….
This morning began with rain showers moving through, which brought
a quarter of an inch of rainfall through 7am. With that, our 2024 precipitation
total (since January 1st) has made it to 3 feet, or exactly 36.00″,
which is 8.32″ above normal to date. Following the morning showers,
low clouds and thin fog have stubbornly stuck around, though a few breaks of
sunshine have been observed a bit after noon time.
The temperature has risen rather slowly today, as one might expect given the
conditions. We began in the upper 60s and have only reached the low 80s
by the early afternoon. The dew point has climbed into the mid 70s, creating a
tropical feel outside.
Winds have slowed since yesterday, but are still generally out of the
south-southwest. The average speed to this point is 8mph, with a peak
gust of only 16mph, taking place a bit after 1am.
Visibility was poor this morning due to dense fog, limited to
1/16 of a mile. As the cloud base has slowly lifted, views have
gradually improved to 12 miles by the afternoon.
The maximum temperature so far today is 80F, which is 1 degree
below the normal high of 81F. The minimum temperature since
midnight is 68F, which is 5 degrees above the normal low of 63F.
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Today’s Observations:
7 A.M.
Weather: Light rain shower and fog, sky obscured,
vertical visibility 200ft
Temperature: 70F; Dew Point: 70F; Relative Humidity: 100%
Wind: S @ 6 kts, wind light
Sea-level pressure: 1011.4 mb; 29.87 in. Hg: rising, then falling
Visibility: 1/16 mile, fog
6-hr Max temp: 70F
6-hr Min temp: 68F
24-hr Precip: 0.25 inches
BHO SA 1155 X W2 1/16RW-F 114/70/70/1706/987/ WND LGT/ 8////
50004 70025 10070 20068
10 A.M.
Weather: Fog, overcast stratus
Temperature: 73F; Dew Point: 72F; Relative Humidity: 97%
Wind: S @ 8 kts
Sea-level pressure: 1011.5 mb; 29.87 in. Hg: steady, then rising
Visibility: 5 miles, fog
3-hr Precip: 0.01 inches
BHO SA 1455 E4 OVC 5F 115/73/72/1908/987/ 8/6// 53001 6001/
1 P.M.
Weather: Broken stratocumulus
Temperature: 80F; Dew Point: 75F; Relative Humidity: 85%
Wind: SW @ 6 kts, wind light
Sea-level pressure: 1011.0 mb; 29.85 in. Hg: steady, then falling
Visibility: 12 miles, hazy
6-hr Max temp: 80F
6-hr Min temp: 70F
6-hr Precip: 0.01 inches
BHO SA 1755 E10 BKN 12 110/80/75/2206/985/ HAZY WND LGT/ 8/500 58005
6001/ 10080 20070
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SUMMARY FOR THURSDAY, JULY 4, 2024
TEMPERATURE (DEGREES F)
MAX…….85 NORMAL…..81
MIN…….62 NORMAL…..63
MEAN……74 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+2
TOTAL DEPARTURE FOR THE MONTH……………………..+1 [+0.1 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……..-2
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-2
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….9 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH……………27 DEPARTURE………0
TOTAL COOLING UNITS FOR THE SEASON………….205 DEPARTURE…….+39
TOTAL COOLING UNITS LAST SEASON TO DATE……..147 DEPARTURE…….+58
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 SSW @ 05:40 A.M.
VECTOR #1 (1-Sec)……….28 SSW @ 05:40 A.M.
VECTOR #2 (1-Sec)……….28 SSW @ 05:40 A.M.
DAVIS #1……………….25 S @ 04:19 A.M.
DAVIS #2 ………………28 SW @ 05:40 A.M.
RMY #1 (Instantaneous)…..28 SSW @ 05:40 A.M.
RMY #2 (Instantaneous)…..28 SSW @ 05:40 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 SSW @ 05:56 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 09:42 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 05:54 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 SW @ 09:42 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 SW @ 09:42 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 SSW @ 05:38 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 SSW @ 05:54 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……12.5 SW [300 total miles]
VECTOR #1…………….12.6
VECTOR #2…………….13.2
DAVIS #1……………..12.1 SSW
DAVIS #2……………..13.0 SW
RMY #1……………….12.6 SW
RMY #2……………….13.4 SSW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.25 DEPARTURE…..+0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.32 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE YEAR (2024)…….36.00 DEPARTURE…..+8.32
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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/…/.. 25 S VEC1 25 S RMY 26
7/4 85/62/74/+2/…/…/.. 28 SSW VEC1 28 SSW RMY 28
7/5 The low since midnight is 68F, 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 5
HIGH 98F IN 1911
LOW 48F IN 1920, 1927 & 1979
PRECIP 1.45 INS IN 1922
PEAK GUST 49e N IN 1944
RECORDS FOR JULY 6
HIGH 99F IN 2010
LOW 47F IN 1979
PRECIP 1.43 INS IN 2005
PEAK GUST 56e MPH NNW IN 1942, 56 MPH WNW IN 1999
TODAY’S REPORT PREPARED BY: Joshua Polen
