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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JULY 8, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0416E
SUNSET: 1923E
HOT AND HUMID WEATHER CONTINUES TODAY AT BLUE HILL….
Summer weather continues as we continue to have temperatures
above normal and high levels of humidity. At least we have mainly
sunny skies today unlike over the weekend when cloud cover
dominated.
The temperature has reached the low 90s here on the summit early
this afternoon. The dew point is a little lower today than yesterday
with values in the mid to upper 60s, but it’s still rather steamy
feeling out there.
Making matters a bit worse is the fact that there is very little
wind today. The average speed for the day so far is only around
5mph, and it even has gone calm at times. The peak gust so far
is 15mph, which occurred around 12:30pm.
Visibility has been limited today due to haziness, generally
in the 40-50 mile range through the day.
The maximum temperature so far today is 91F, which is 10 degrees
above the normal high of 81F. The minimum temperature since
midnight is 71F, which is 8 degrees above the normal low of 63F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus/castellanus, thin scattered cirrus
Temperature: 77F; Dew Point: 69F; Relative Humidity: 77%
Wind: NNW @ 5 kts, wind light
Sea-level pressure: 1018.2 mb; 30.07 in. Hg: rising, then more rapidly
Visibility: 50 miles, hazy
6-hr Max temp: 77F
6-hr Min temp: 71F
24-hr Precip: 0.00 inches
BHO SA 1155 85 SCT 250 -SCT 50 182/77/69/3405/007/ HAZY WND LGT/
8/081 53008 10077 20071
10 A.M.
Weather: Scattered altocumulus/castellanus, thin scattered cirrus,
few cumulus distant S and distant WSW-NW-NNE
Temperature: 85F; Dew Point: 66F; Relative Humidity: 53%
Wind: Calm
Sea-level pressure: 1018.5 mb; 30.08 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 70 SCT 250 -SCT 40 185/85/66/0000/008/ FEW CU DSNT S
AND DSNT WSW-NW-NNE HAZY WND CALM/ 8/281 50003
1 P.M.
Weather: Scattered cumulus, scattered altocumulus, scattered cirrus
Temperature: 89F; Dew Point: 67F; Relative Humidity: 47%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1017.2 mb; 30.04 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 91F
6-hr Min temp: 77F
6-hr Precip: 0.00 inches
BHO SA 1755 55 SCT 65 SCT 250 SCT 40 172/89/67/2606/004/ HAZY
WND LGT/ 8/254 58013 10091 20077
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SUMMARY FOR SUNDAY, JULY 7, 2024
TEMPERATURE (DEGREES F)
MAX…….88 NORMAL…..81
MIN…….72 NORMAL…..63
MEAN……80 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+8
TOTAL DEPARTURE FOR THE MONTH…………………….+15 [+1.9 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……………15 DEPARTURE……..+7
TOTAL COOLING UNITS FOR THE MONTH……………62 DEPARTURE…….+13
TOTAL COOLING UNITS FOR THE SEASON………….240 DEPARTURE…….+52
TOTAL COOLING UNITS LAST SEASON TO DATE……..188 DEPARTURE…….+52
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)……….E15 SW @ 12:04 A.M.
VECTOR #1 (1-Sec)……….15 SW @ 12:04 A.M.
VECTOR #2 (1-Sec)……….14 SW @ 12:04 A.M.
DAVIS #1……………….14 SW @ 12:04 A.M.
DAVIS #2 ………………13 WSW @ 12:01 A.M.
RMY #1 (Instantaneous)…..14 SW @ 12:04 A.M.
RMY #2 (Instantaneous)…..15 SW @ 12:04 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………10 SSW @ 12:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..11 @ 12:12 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..12 @ 12:00 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………10 SSW @ 12:00 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………11 S @ 12:00 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..11 SW @ 12:00 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..12 SW @ 12:00 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….4.7 SW [112 total miles]
VECTOR #1……………..5.6
VECTOR #2……………..5.6
DAVIS #1………………5.1 WSW
DAVIS #2………………4.9 WSW
RMY #1………………..5.5 WSW
RMY #2………………..5.7 WSW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.10
TOTAL PRECIPITATION FOR THE MONTH…………..0.43 DEPARTURE…..-0.34
TOTAL PRECIPITATION FOR THE YEAR (2024)…….36.11 DEPARTURE…..+8.11
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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/+2/0.04/…/.. 28 SSW VEC1 28 SSW RMY 28
7/5 84/68/76/+4/0.22/…/.. 29 SSW VEC1 29 SSW RMY 29
7/6 77/71/74/+2/0.10/…/.. 31 SW VEC1 33 SSW RMY 33
7/7 88/72/80/+8/0.00/…/.. 15 SW VEC1 15 SW RMY 14
7/8 The low since midnight is 71F, 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 8
HIGH 95F IN 1981
LOW 50F IN 1919
PRECIP 1.74 INS IN 1916
PEAK GUST 46e SSW IN 1941
RECORDS FOR JULY 9
HIGH 98F IN 1912
LOW 47F IN 1909
PRECIP 3.74 INS IN 1921
WIND 46 MPH NW IN 1992
TODAY’S REPORT PREPARED BY: Matt Douglas
