Thursday, October 10, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 10, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0552E
SUNSET: 1709E
THE FEEL OF FALL WITH UNSEASONABLY COOL AND BRISK CONDITIONS UNDER
A MIX OF SUN AND CLOUDS….
We started the day with clear skies and chilly temperatures. As day
time heating commenced this morning, stratocumulus clouds quickly
began to form and increase in coverage thanks in part to very chilly
air aloft. As such, the sun has been playing peek-a-boo, hiding
behind the clouds at times. Nonetheless, it’s been a very nice fall
day despite the chill.
Temperatures started the day in the low 40s, and has only risen to
the upper 50s by early this afternoon. This is a few degrees below
the expected temperature for this date. The dew point has been fairly
steady in the low 40s.
Winds have been gusty today, adding to the chilly feel today. The
northwest flow has been averaging at around 12mph for the day so far.
Gusts over 20mph have been common through the day so far, with a
peak gust of 30mph which occurred just before 8:30am.
The maximum temperature so far today is 59F, which is 4 degrees
below the normal high of 63F. The minimum temperature since midnight
is 42F, which is 4 degrees below the normal low of 46F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant all quadrants, few cirrus
distant ESE-SW
Temperature: 44F; Dew Point: 40F; Relative Humidity: 84%
Wind: NW @ 13G18 kts
Sea-level pressure: 1014.7 mb; 29.96 in. Hg: rising, then more rapidly
Visibility: 80 miles
6-hr Max temp: 46F
6-hr Min temp: 42F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 80 147/44/40/3213G18/996/ FEW SC DSNT ALQDS
FEW CI DSNT ESE-SW/ 8/501 53017 10046 20042
10 A.M.
Weather: Scattered stratocumulus, thin scattered cirrus
Temperature: 53F; Dew Point: 41F; Relative Humidity: 61%
Wind: NW @ 11G19 kts
Sea-level pressure: 1015.8 mb; 30.00 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
BHO SA 1455 30 SCT 250 -SCT 80 158/53/41/3211G19/000/ 8/501 51009
1 P.M.
Weather: Broken stratocumulus, thin broken cirrus
Temperature: 58F; Dew Point: 40F; Relative Humidity: 50%
Wind: NW @ 11G19 kts
Sea-level pressure: 1014.7 mb; 29.96 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 59F
6-hr Min temp: 44F
6-hr Precip: 0.00 inches
BHO SA 1755 E40 BKN 250 -BKN 80 147/58/40/3211G19/996/ 8/501 58011
10059 20044
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SUMMARY FOR WEDNESDAY, OCTOBER 9, 2024
TEMPERATURE (DEGREES F)
MAX…….64 NORMAL…..64
MIN…….46 NORMAL…..47
MEAN……55 NORMAL…..55
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………0
TOTAL DEPARTURE FOR THE MONTH…………………….+21 [+2.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………10 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH……………55 DEPARTURE…….-25
TOTAL HEATING UNITS FOR THE SEASON………….125 DEPARTURE…….-73
TOTAL HEATING UNITS LAST SEASON TO DATE……..133 DEPARTURE……..-8
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+82
TOTAL COOLING UNITS LAST SEASON TO DATE……..704 DEPARTURE…….+53
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)……….E24 W @ 01:36 P.M.
VECTOR #1 (1-Sec)……….23 WNW @ 12:01 P.M.
VECTOR #2 (1-Sec)……….25 WNW @ 11:39 A.M.
DAVIS #1……………….24 W @ 12:00 P.M.
DAVIS #2 ………………24 WNW @ 11:04 A.M.
RMY #1 (Instantaneous)…..23 WNW @ 12:00 P.M.
RMY #2 (Instantaneous)…..25 WNW @ 11:39 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 W @ 01:36 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 @ 11:06 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 11:06 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 W @ 11:06 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 WNW @ 11:06 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 WNW @ 11:06 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 W @ 11:06 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..9.0 WNW [217 total miles]
VECTOR #1………………9.2
VECTOR #2……………..10.0
DAVIS #1……………….9.5 WNW
DAVIS #2……………….9.7 NW
RMY #1…………………9.0 WNW
RMY #2…………………9.7 WNW
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..0.27 DEPARTURE…..-1.24
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.31 DEPARTURE…..+3.13
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PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
10/1 66/55/61/+3/T/134/19 28 ENE VEC1 28 ENE RMY 29
10/2 66/52/59/+1/T/252/36 21 ENE VEC1 20 ENE RMY 20
10/3 72/52/62/+5/0.00/592/85 23 S VEC1 23 S RMY 23
10/4 74/54/64/+7/0.00/438/63 23 SW VEC1 22 SW RMY 22
10/5 72/52/62/+5/T/457/66 24 NNW VEC1 23 NNW RMY 24
10/6 65/47/56/0/0.00/655/95 20 SE VEC1 19 SE RMY 18
10/7 60/51/56/0/0.27/021/03 29 SSE VEC1 29 SSE RMY 31
10/8 64/45/55/0/0.00/649/95 21 NW VEC1 21 NW RMY 21
10/9 64/46/55/0/T/632/93 24 W VEC1 23 WNW RMY 23
10/10 The low since midnight is 42F, the daily normal low is 46F.
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OCTOBER 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 OCTOBER 10
HIGH 85F IN 1949
LOW 27F IN 1929
PRECIP 2.02 INCHES IN 1998
SNOWFALL 6.8 INCHES IN 1979 (RECORD FOR MONTH)
PEAK GUST 59 MPH WNW IN 1958
RECORDS FOR OCTOBER 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 1.36 INCHES IN 2019
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941
TODAY’S REPORT PREPARED BY: Matt Douglas
