Thursday, October 3, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 3, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0544E
SUNSET: 1721E
A MIX OF SUN AND CLOUDS WITH WARMER THAN NORMAL TEMPERATURES….
Skies started the day mainly clear with a few mid and upper level
clouds around. As we moved through the early afternoon hours, mainly
diurnal convective (cumulus) clouds have developed creating an
interplay between them and the sun.
Temperatures have warmed into the low 70s, which is above normal
for this time of year. The dew point is once again holding in the
mid 50s, so it’s a rather plesant fall day out there.
The wind has been rather light, and somewhat variable, although
the prevailing direction for the day so far is southwest. The
average speed for the day so far is only around 5mph. The peak
gust so far is 14mph, which occurred just after 10am this morning.
Visibility has been holding at around 30-40 miles all day with
thin fog the obscuration early this morning, and just general
haziness thereafter.
The maximum temperature so far today is 72F, which is 6 degrees
above the normal high of 66F. The minimum temperature since midnight
is 52F, which is 3 degrees above the normal low of 49F.
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Today’s Observations:
7 A.M.
Weather: Clear, few cumulus offshore distant ENE-SE-S,
few altocumulus/castellanus distant SW-NW-NE, few cirrus distant WNW-N
Temperature: 56F; Dew Point: 54F; Relative Humidity: 94%
Wind: W @ 4 kts, wind light
Sea-level pressure: 1021.1 mb; 30.15 in. Hg: rising unsteadily
Visibility: 30 miles, thin fog
6-hr Max temp: 56F
6-hr Min temp: 52F
24-hr Precip: Trace
BHO SA 1155 CLR 30 211/56/54/2704/015/ FEW CU OFFSHR DSNT ENE-SE-S
FEW AC/ACC DSNT SW-NW-NE FEW CI DSNT WNW-N THN F ALQDS PTCHY GF ALQDS
WND LGT/ 8/281 52016 70000 10056 20052
10 A.M.
Weather: Scattered altocumulus, few cumulus all quadrants
Temperature: 65F; Dew Point: 54F; Relative Humidity: 68%
Wind: WSW @ 4 kts, wind light and variable
Sea-level pressure: 1021.7 mb; 30.17 in. Hg: rising, then more slowly
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 60 SCT 30 217/65/54/2504/017/ FEW CU ALQDS HAZY WND L/V/
8/250 51006
1 P.M.
Weather: Broken cumulus
Temperature: 70F; Dew Point: 54F; Relative Humidity: 58%
Wind: SSW @ 4 kts, wind light
Sea-level pressure: 1020.4 mb; 30.13 in. Hg: falling, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 72F
6-hr Min temp: 56F
6-hr Precip: 0.00 inches
BHO SA 1755 E36 BKN 40 204/70/54/2004/013/ HAZY WND LGT/ 8/200 56013
10072 20056
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SUMMARY FOR WEDNESDAY, OCTOBER 2, 2024
TEMPERATURE (DEGREES F)
MAX…….66 NORMAL…..66
MIN…….52 NORMAL…..49
MEAN……59 NORMAL…..58
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH……………………..+4 [+1.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….6 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH……………10 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE SEASON…………..80 DEPARTURE…….-53
TOTAL HEATING UNITS LAST SEASON TO DATE……..108 DEPARTURE…….-28
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……..-1
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+85
TOTAL COOLING UNITS LAST SEASON TO DATE……..689 DEPARTURE…….+68
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)……….E21 ENE @ 01:39 P.M.
VECTOR #1 (1-Sec)……….20 ENE @ 12:44 P.M.
VECTOR #2 (1-Sec)……….21 ENE @ 01:10 P.M.
DAVIS #1……………….19 ENE @ 12:44 P.M.
DAVIS #2 ………………19 E @ 12:44 P.M.
RMY #1 (Instantaneous)…..20 NE @ 11:11 A.M.
RMY #2 (Instantaneous)…..21 ENE @ 01:10 P.M.
MERLIN…………………18 ENE
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 ENE @ 01:20 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..13 @ 12:35 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 12:43 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 E @ 12:44 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 E @ 12:43 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 ENE @ 03:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 ENE @ 12:43 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..7.8 ESE [186 total miles]
VECTOR #1………………7.9
VECTOR #2………………8.5
DAVIS #1……………….8.3 E
DAVIS #2……………….8.3 E
RMY #1…………………8.0 E
RMY #2…………………8.4 ENE
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.34
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.04 DEPARTURE…..+4.03
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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 The low since midnight is 52F, the daily normal low is 49F.
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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 3
HIGH 82F IN 1922
LOW 28F IN 1899
PRECIP 1.76 INCHES IN 1979
PEAK GUST 62 MPH WNW IN 1964
RECORDS FOR OCTOBER 4
HIGH 84F IN 2007
LOW 28F IN 1888
PRECIP 1.87 INCHES IN 2011
PEAK GUST 59 MPH SSW IN 1990
TODAY’S REPORT PREPARED BY: Matt Douglas
