Friday, October 11, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, OCTOBER 11, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0553E
SUNSET: 1708E
A BEAUTIFUL DAY ON BLUE HILL WITH BRILLIANT SUNSHINE AND WARMER
TEMPERATURES….
This day started off with chilly conditions and mostly clear skies,
with the exception of some clouds off the coast. As the day went
on we experienced a nice warming and only a few clouds to our North
situated over Boston.
During the overnight hours we dipped to 40F which is the coldest of
the season to date. This morning it remained on the chilly side,
especially as the dew points hovered between the upper 30’s and low
40’s. This gave us very cool and dry conditions until the late
morning when we reached above 60F.
Winds have been steady out of the WNW for much of the day today. Our
average so far is around 10mph for the day. The peak gust so far for
the day occurred around 12:30pm at about 23 mph.
Visibility has been at a spectacular 80 miles all day, for two days
in a row now.
The maximum temperature so far today is 65F, which is 2 degrees above
the normal high of 63F. The minimum temperature since midnight is 40F,
which is 6 degrees below the normal low of 46F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus NNW-N-E, few altocumulus castellanus
distant E-ESE
Temperature: 42F; Dew Point: 39F; Relative Humidity: 87%
Wind: WNW @ 7 kts
Sea-level pressure: 1016.8 mb; 30.03 in. Hg: rising, then more
rapidly
Visibility: 80 miles
6-hr Max temp: 43F
6-hr Min temp: 40F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 80 168/42/39/2807/003/ FEW AC NNW-N-E FEW ACC
DSNT E-ESE 8/050 53009 10043 20040
10 A.M.
Weather: Clear, few altocumulus N-NNE
Temperature: 55F; Dew Point: 42F; Relative Humidity: 60%
Wind: WNW @ 9 kts
Sea-level pressure: 1015.2 mb; 29.09 in. Hg: falling, then more
rapidly
Visibility: 80 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 80 152/55/42/2909/998/ FEW AC N-NNE 8/050 58016
1 P.M.
Weather: Clear, few altocumulus N-NNE
Temperature: 65F; Dew Point: 42F; Relative Humidity: 42%
Wind: WNW @ 8 kts
Sea-level pressure: 1013.1 mb; 29.92 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 CLR 80 131/65/42/2908/992/ FEW AC N-NNE 8/050 58021
10065 20042
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SUMMARY FOR THURSDAY, OCTOBER 10, 2024
TEMPERATURE (DEGREES F)
MAX…….60 NORMAL…..63
MIN…….42 NORMAL…..46
MEAN……51 NORMAL…..55
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-4
TOTAL DEPARTURE FOR THE MONTH…………………….+17 [+1.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………14 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………69 DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE SEASON………….139 DEPARTURE…….-69
TOTAL HEATING UNITS LAST SEASON TO DATE……..142 DEPARTURE……..-3
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……..-5
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)……….E36 NW @ 04:23 P.M.
VECTOR #1 (1-Sec)……….36 NW @ 04:23 P.M.
VECTOR #2 (1-Sec)……….35 NW @ 04:25 P.M.
DAVIS #1……………….34 NW @ 04:24 P.M.
DAVIS #2 ………………30 NW @ 04:19 P.M.
RMY #1 (Instantaneous)…..38 NW @ 04:23 P.M.
RMY #2 (Instantaneous)…..36 NW @ 04:25 P.M.
MERLIN…………………33 NW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 NW @ 04:24 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 @ 04:24 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 04:25 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 NW @ 04:24 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 NNW @ 04:25 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..22 NW @ 04:24 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 NW @ 04:25 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….13.2 NW [317 total miles]
VECTOR #1……………..12.8
VECTOR #2……………..13.5
DAVIS #1………………13.2 NW
DAVIS #2………………13.1 NNW
RMY #1………………..12.4 NW
RMY #2………………..13.0 NW
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..0.27 DEPARTURE…..-1.41
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.31 DEPARTURE…..+2.96
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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 60/42/51/-4/0.00/…/.. 36 NW VEC1 36 NW RMY 38
10/11 The low since midnight is 40F, 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 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
RECORDS FOR OCTOBER 12
HIGH 87F IN 1954
LOW 31F IN 1906
PRECIP 1.70 INCHES IN 1948
SNOWFALL TRACE IN 1904, 1941
PEAK GUST 55 MPH NW IN 1963
TODAY’S REPORT PREPARED BY: Amanda Joly
