Saturday, November 25, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, NOVEMBER 25, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0647E
SUNSET: 1615E
SUNNY WITH LESS WIND AND GREAT VISIBILITY….
It has been an absolutely beautiful day on the hill, with all
day sunshine. While there were only a few stratocumulus clouds
this morning, we are now seeing the sky almost completely covered
with cirrostratus clouds. This in conjunction with a small pressure
drop as the day went on. With lower than normal temperatures and a
light breeze, it is a bit on the chilly side.
Temperatures started in the lower 20’s and by the afternoon we had
hit our high of 35F. That is 12 degrees lower than our normal high
of 47F. The dew point hung around 15F all day, signifying very dry air.
Wind is westerly and has slightly decreased over the course of the day.
Our average for the day so far has been around 10 mph, but dropped to
around 6 mph by the 1 PM observation. The current peak gust of 24 mph
occurred earlier this morning.
Visibility started off with about 80 miles of visibility and
stayed the same for the 1pm observation.
Hope y’all had a Happy Thanksgiving!
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant offshore NE-E-ESE
Temperature: 21F; Dew Point: 14F; Relative Humidity: 74%
Wind: NW @ 9G12 kts
Sea-level pressure: 1029.0 mb; 30.37 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 25F
6-hr Min temp: 20F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 80 290/21/14/3309G12/037/ FEW SC DSNT OFFSHR NE-E-ESE/
8/500 51022 10025 20020
10 A.M.
Weather: Clear, few stratocumulus ENE-E-ESE, few cirrostratus
Temperature: 28F; Dew Point: 11F; Relative Humidity: 48%
Wind: NW @ 9G15 kts
Sea-level pressure: 1030.2 mb; 30.42 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 80 302/28/11/3309G15/042/ FEW SC DSNT ENE-E-ESE FEW CS
ALQDS/ 8/505 51012
1 P.M.
Weather: Overcast cirrostratus, few breaks in overcast
Temperature: 34F; Dew Point: 13F; Relative Humidity: 42%
Wind: W @ 4 kts, wind light
Sea-level pressure: 1029.1 mb; 30.37 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 35F
6-hr Min temp: 21F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 250 OVC 80 291/34/13/2704/037/ FEW BINOVC ALQDS WND LGT/
8/006 58013 10035 20021
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SUMMARY FOR FRIDAY, NOVEMBER 24, 2023
TEMPERATURE (DEGREES F)
MAX…….47 NORMAL…..47
MIN…….26 NORMAL…..31
MEAN……37 NORMAL…..39
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-2
TOTAL DEPARTURE FOR THE MONTH…………………-23 [-1.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………28 DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………..552 DEPARTURE…….+22
TOTAL HEATING UNITS FOR THE SEASON………….902 DEPARTURE……-139
TOTAL HEATING UNITS LAST SEASON TO DATE……..840 DEPARTURE…….+62
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E35 WNW @ 6:48 P.M.
VECTOR #1 (1-Sec)……….32 WNW @ 6:58 P.M.
VECTOR #2 (1-Sec)……….34 WNW @ 6:13 P.M.
DAVIS #1……………….31 NW @ 6:15 P.M.
DAVIS #2 ………………31 NW @ 6:49 P.M.
RMY #1 (Instantaneous)…..33 WNW @ 6:14 P.M.
RMY #2 (Instantaneous)…..33 WNW @ 6:49 P.M.
MERLIN…………………32 NW
RICHARDS (C5C) (Inst)……32 @ 6:49 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 WNW @ 8:56 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 @ 6:55 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 6:49 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 WNW @ 6:15 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 NW @ 6:49 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 WNW @ 8:55 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 WNW @ 6:49 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 @ 6:15 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……12.7 WNW [305 total miles]
VECTOR #1…………….12.3
VECTOR #2…………….13.4
DAVIS #1……………..12.8 WNW
DAVIS #2……………..13.3 NW
RMY #1……………….11.8 WNW
RMY #2……………….13.1 WNW
RICHARDS (C5C)………..12.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..1.62 DEPARTURE…..-1.78
TOTAL PRECIPITATION FOR THE YEAR…………..50.81 DEPARTURE…..+3.25
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-1.1
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-1.8
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PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
11/1 42/31/37/-10/0.01/T/056/09 23 ENE VEC1 21 ENE RMY 23
11/2 45/28/37/-10/0.00/0.0/618/100 23 NNW VEC1 23 NNW RMY 22
11/3 55/36/46/0/0.00/0.0/541/88 32 SW VEC1 33 SSW RMY 33
11/4 59/44/52/+6/0.00/0.0/049/08 32 SW VEC1 31 SW RMY 32
11/5 61/42/52/+6/0.00/0.0/360/59 24 NNW VEC1 27 NNW RMY 27
11/6 50/40/45/+/0.00/0.0/067/11 28 S VEC1 27 S RMY 25
11/7 65/46/56/+11/0.05/0.0/272/45 38 WNW VEC1 37 WNW RMY 37
11/8 48/33/41/-4/0.00/0.0/440/73 36 NNW VEC1 38 NNW RMY 39
11/9 42/32/37/+7/0.11/T/000/00 20 WNW VEC1 20 WNW RMY 20
11/10 49/38/44/0/0.00/0.0/024/04 23 W VEC1 23 W RMY 22
11/11 49/30/40/-3/0.00/0.0/590/99 29 NW VEC1 26 NW RMY 30
11/12 41/27/34/-9/0.00/0.0/475/80 20 N VEC1 19 N RMY 19
11/13 44/24/34/-9/T/T/456/77 20 NNW VEC1 20 N RMY 19
11/14 47/31/39/-3/0.00/0.0/342/58 29 NW VEC1 29 NW RMY 29
11/15 50/30/40/-2/0.00/0.0/475/81 30 SW VEC1 30 SW RMY 31
11/16 62/40/51/+9/0.00/0.0/574/98 30 WSW VEC1 31 WSW RMY 31
11/17 64/43/54/+13/0.00/0.0/280/48 35 SSW VEC1 36 SSW RMY 37
11/18 56/30/43/+2/0.20/0.0/157/27 35 NW VEC1 35 NW RMY 37
11/19 50/29/40/-1/0.00/0.0/475/82 38 WNW VEC1 38 WNW RMY 39
11/20 38/25/32/-8/0.00/0.0/577/100 29 NNW VEC1 32 NNW RMY 33
11/21 39/22/31/-9/0.05/T/363/63 29 SE VEC1 29 SE RMY 28
11/22 53/33/43/+3/1.20/T/000/00 38 SE VEC1 40 SE RMY 37
11/23 50/36/43/+4/0.00/0.0/…/.. 33 NW VEC1 32 NW RMY 33
11/24 47/26/37/-2/0.00/0.0/…/.. 35 WNW VEC1 33 WNW RMY 33
11/25 The low since midnight is 20F, the daily normal low is 31F
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NOVEMBER DAILY RECORDS TO DATE
11/1 TIED RECORD FOR SNOWFALL WITH A TRACE, TIED WITH 1906, 1951
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR NOVEMBER 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 4.0 INS IN 1938
PEAK GUST 94e E IN 1950
RECORDS FOR NOVEMBER 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.39 INS IN 1950
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964
TODAY’S REPORT PREPARED BY: Benjamin Turner
