Monday, October 7, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, OCTOBER 7, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0549E
SUNSET: 1714E
RAIN SHOWERS MOVE THROUGH AHEAD OF A COLD FRONT….
Today marks our first measurable precipitation of the month! Showers
moving through ahead of a frontal boundary have gifted us with 0.24″
of rainfall. The intensity has primarily been on the lighter side.
Temperatures today have been cooler than the past several days, rising slowly
through the 50s. The dew point initially lagged behind, but has now caught
up and is following the same trend.
Winds have been gustier today than the past several days. Our average speed
to this point is 13mph, with flow out of the south-southeast. The peak gust
occurred a bit after 7:30am, with a value of 29mph.
Visibility has deteriorated as the day has progressed, falling from 20
miles this morning to only 1/8 of a mile by the final observation, due to
precipitation and fog.
The maximum temperature so far today is 56F, which is 8 degrees below
the normal high of 64F. The minimum temperature since midnight is 51F,
which is 4 degrees above the normal low of 47F.
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Today’s Observations:
7 A.M.
Weather: Light rain shower, broken altocumulus, overcast altostratus,
few lower stratus fractus distant SW-W
Temperature: 53F; Dew Point: 51F; Relative Humidity: 93%
Wind: SSE @ 15G24 kts
Sea-level pressure: 1011.5 mb; 29.87 in. Hg: falling, then more slowly
Visibility: 20 miles, thin fog all quadrants
6-hr Max temp: 53F
6-hr Min temp: 51F
24-hr Precip: 0.02 inches
BHO SA 1155 E45 BKN 60 OVC 20RW- 115/53/51/1515G24/987/ FEW STFRA DSNT SW-W
THN F ALQDS RW-B15 PCPN VRY LGT/ 8/77/ 56017 6002/ 70002 10053 20051
10 A.M.
Weather: Light rain shower, broken stratus fractus, overcast nimbostratus,
few breaks in overcast overhead-N-NNE
Temperature: 55F; Dew Point: 55F; Relative Humidity: 100%
Wind: S @ 10G15 kts
Sea-level pressure: 1010.9 mb; 29.85 in. Hg: falling then rising
Visibility: 10 miles, 3 miles NNE-NE, 5 miles SSW-WSW, thin fog all quadrants
3-hr Precip: 0.12 inches
BHO SA 1455 E20 BKN 40 OVC 10RW- 109/55/55/1710G15/985/ FEW BINOVC OVHD-N-NNE
FEW LWR STFRA ALQDS STFRA DRFTG OVR SMT HIER CLDS VSBL OVHD-N-NNE THN F ALQDS
PCPN VRY LGT VSBY 3 NNE-NE 5 SSW-WSW/ 8/77/ 55006 6012/
1 P.M.
Weather: Light rain and fog, sky obscured, vertical visibility 200ft
Temperature: 56F; Dew Point: 56F; Relative Humidity: 100%
Wind: S @ 8G14 kts
Sea-level pressure: 1009.6 mb; 29.81 in. Hg: falling unsteadily
Visibility: 1/8 mile, fog
6-hr Max temp: 56F
6-hr Min temp: 53F
6-hr Precip: 0.22 inches
BHO SA 1755 X W2 1/8RW-F 096/56/56/1708G14/981/ PCPN VRY LGT/ 8////
57013 6022/ 10056 20053
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SUMMARY FOR SUNDAY, OCTOBER 6, 2024
TEMPERATURE (DEGREES F)
MAX…….65 NORMAL…..65
MIN…….47 NORMAL…..48
MEAN……56 NORMAL…..56
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………0
TOTAL DEPARTURE FOR THE MONTH…………………….+21 [+3.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….9 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH……………26 DEPARTURE…….-24
TOTAL HEATING UNITS FOR THE SEASON…………..96 DEPARTURE…….-72
TOTAL HEATING UNITS LAST SEASON TO DATE……..108 DEPARTURE…….-12
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……..-3
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+83
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)……….E20 SE @ 09:01 P.M.
VECTOR #1 (1-Sec)……….19 SE @ 08:48 P.M.
VECTOR #2 (1-Sec)……….19 SE @ 08:51 P.M.
DAVIS #1……………….17 SE @ 08:43 P.M.
DAVIS #2 ………………21 S @ 11:17 P.M.
RMY #1 (Instantaneous)…..18 SE @ 09:10 P.M.
RMY #2 (Instantaneous)…..19 SE @ 08:51 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 SSE @ 10:37 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 @ 08:59 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 08:52 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 ESE @ 04:36 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 S @ 11:15 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..13 ESE @ 04:37 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SE @ 08:52 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.0 NNE [191 total miles]
VECTOR #1………………8.5
VECTOR #2………………9.0
DAVIS #1……………….8.5 E
DAVIS #2……………….8.6 E
RMY #1…………………8.3 ENE
RMY #2…………………8.9 ENE
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.02 DEPARTURE…..-0.97
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.06 DEPARTURE…..+3.71
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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/…/.. 23 S VEC1 23 S RMY 23
10/4 74/54/64/+7/0.00/…/.. 23 SW VEC1 22 SW RMY 22
10/5 72/52/62/+5/T/…/.. 24 NNW VEC1 23 NNW RMY 24
10/6 65/47/56/0/0.00/…/.. 20 SE VEC1 19 SE RMY 18
10/7 The low since midnight is 51F, the daily normal low is 47F.
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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 7
HIGH 88F IN 1963 (RECORD FOR MONTH)
LOW 30F IN 1904,1986
PRECIP 1.75 INCHES IN 1972
PEAK GUST 76 W IN 2020
RECORDS FOR OCTOBER 8
HIGH 81F IN 1916,1990
LOW 28F IN 1919
PRECIP 2.22 INCHES IN 1891
SNOWFALL TRACE IN 1988, 2001 (EARLIEST DATE)
PEAK GUST 60 MPH NE IN 1996
TODAY’S REPORT PREPARED BY: Joshua Polen/Matt Douglas
