Saturday, October 5, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, OCTOBER 5, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0546E
SUNSET: 1718E
MOSTLY SUNNY FOLLOWING BRIEF MORNING SHOWERS….
We were graced with a few brief showers this morning, which unfortunately
did nothing to aid in our recent dry spell. Only a trace of rainfall was
observed. Skies briefly cleared out mid-morning, but cumulus were quick to
develop thereafter.
Temperatures remain on the warm side today. This morning we bottomed out
in the mid 50s before gradually rising into the low 70s. The dew point
began in the upper 50s and has since fallen into the mid 50s as a drier
air mass moves into place.
Winds remain on the light side today. Our average speed is 9mph to this
point, with flow out of the north-northwest. The peak gust occurred just
after 8am during one of the passing showers, with a value of 20mph.
Visibility was fair this morning with thin fog and low clouds present.
Once those dissipated and departed, views jumped up to 70 miles.
The maximum temperature so far today is 71F, which is 6 degrees
above the normal high of 65F. The minimum temperature since midnight
is 56F, which is 8 degrees above the normal low of 48F.
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Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, broken altocumulus/altostratus,
few lower stratus fractus NNW-E-SW, virga distant W-NW
Temperature: 57F; Dew Point: 57F; Relative Humidity: 99%
Wind: NW @ 7 kts
Sea-level pressure: 1019.7 mb; 30.11 in. Hg: rising, then more slowly
Visibility: 30 miles, thin fog all quadrants
6-hr Max temp: 57F
6-hr Min temp: 56F
24-hr Precip: 0.00 inches
BHO SA 1155 E25 BKN 140 BKN 30 197/57/57/3207/011/ FEW LWR STFRA NNW-E-SW
VIRGA DSNT W-NW THN F ALQDS/ 8/570 51008 10057 20056
10 A.M.
Weather: Scattered stratocumulus, broken altocumulus
Temperature: 61F; Dew Point: 56F; Relative Humidity: 83%
Wind: NNW @ 8 kts
Sea-level pressure: 1020.2 mb; 30.13 in. Hg: rising, then steady
Visibility: 60 miles
3-hr Precip: Trace
BHO SA 1455 50 SCT E100 BKN 60 202/61/56/3408/013/ 8/550 51005 6000/
1 P.M.
Weather: Scattered cumulus
Temperature: 69F; Dew Point: 54F; Relative Humidity: 60%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1019.6 mb; 30.11 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 71F
6-hr Min temp: 57F
6-hr Precip: Trace
BHO SA 1755 50 SCT 70 196/69/54/3406/011/ WND LGT/ 8/200 58006 6000/
10071 20057
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SUMMARY FOR FRIDAY, OCTOBER 4, 2024
TEMPERATURE (DEGREES F)
MAX…….74 NORMAL…..66
MIN…….54 NORMAL…..49
MEAN……64 NORMAL…..57
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+7
TOTAL DEPARTURE FOR THE MONTH…………………….+16 [+3.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….1 DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH……………14 DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE SEASON…………..84 DEPARTURE…….-66
TOTAL HEATING UNITS LAST SEASON TO DATE……..108 DEPARTURE…….-24
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+84
TOTAL COOLING UNITS LAST SEASON TO DATE……..700 DEPARTURE…….+57
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)……….E23 SW @ 11:43 A.M.
VECTOR #1 (1-Sec)……….22 SW @ 11:43 A.M.
VECTOR #2 (1-Sec)……….22 S @ 04:51 P.M.
DAVIS #1……………….24 S @ 04:52 P.M.
DAVIS #2 ………………28 S @ 06:02 P.M.
RMY #1 (Instantaneous)…..22 SW @ 11:43 A.M.
RMY #2 (Instantaneous)…..22 S @ 04:51 P.M.
MERLIN…………………20 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 S @ 04:58 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 05:37 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 06:04 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 S @ 07:31 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S @ 05:51 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SSW @ 05:37 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 S @ 06:04 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..9.2 SSW [220 total miles]
VECTOR #1………………9.6
VECTOR #2……………..10.0
DAVIS #1……………….9.3 SSW
DAVIS #2………………10.3 SSW
RMY #1…………………9.5 SSW
RMY #2………………..10.1 SSW
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.66
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.04 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 The low since midnight is 56F, the daily normal low is 48F.
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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 5
HIGH 86F IN 2007
LOW 29F IN 1965
PRECIP 3.17 INCHES IN 1962
PEAK GUST 64e MPH S IN 1979
RECORDS FOR OCTOBER 6
HIGH 83F IN 1990, 2007
LOW 26F IN 1965
PRECIP 3.78 INCHES IN 1962
PEAK GUST 60e MPH S IN 1942
TODAY’S REPORT PREPARED BY: Joshua Polen
