Sunday, November 12, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, NOVEMBER 12, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0631E
SUNSET: 1625E
UNSEASONABLY CHILLY WITH A MIX OF SUN AND CLOUDS TODAY ON BLUE HILL….
We started the day in the mid to upper 20s early this morning, but
we have only recovered to the low 40s by early this afternoon. The
normal high for today should be in the low 50s! Other than the chill,
it is a rather delightful day under a mix of sun and clouds. The
wind has been light, so that helps to prevent it from feeling too
uncomfortable outdoors.
The dew point has been gradually rising from the low 20s to the
mid 20s. Regardless, the air mass is quite dry today.
As mentioned, the wind has been on the light side, and has become
rather variable in direction early this afternoon. The average
speed for the day is around 9mph, but the trend has been for
decreasing speeds over the past 2-3 hours. The last hour for
instance has only averaged 4mph. The highest gust for the day
occurred back just after midnight at around 20mph.
The visibility has been decent today, starting off at around 40
miles early this morning, but improving to around 60 miles by
early this afternoon.
The maximum temperature so far today is 41F, which is 10 degrees
below the normal high of 51F. The minimum temperature since
midnight is 27F, which is 8 degrees below the normal low of 35F.
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Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus, few stratocumulus distant W-NE-SSW
Temperature: 27F; Dew Point: 21F; Relative Humidity: 77%
Wind: N @ 9 kts
Sea-level pressure: 1032.6 mb; 30.49 in. Hg: rising, then more slowly
Visibility: 40 miles
6-hr Max temp: 30F
6-hr Min temp: 27F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
BHO SA 1155 250 -SCT 40 326/27/21/3509/049/ FEW SC DSNT W-NE-SSW/
8/501 51010 10030 20027
10 A.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 36F; Dew Point: 23F; Relative Humidity: 58%
Wind: NNW @ 7 kts
Sea-level pressure: 1033.3 mb; 30.51 in. Hg: rising, then falling
Visibility: 50 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E30 BKN 250 -BKN 50 333/36/23/3407/051/ 8/501 50007
1 P.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 39F; Dew Point: 25F; Relative Humidity: 57%
Wind: NNW @ 3 kts, wind light and variable
Sea-level pressure: 1032.0 mb; 30.47 in. Hg: falling unsteadily
Visibility: 60 miles
6-hr Max temp: 41F
6-hr Min temp: 27F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 E30 BKN 250 -BKN 60 320/39/25/3403/047/ WND L/V/ 8/501
57013 10041 20027
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SUMMARY FOR SATURDAY, NOVEMBER 11, 2023
TEMPERATURE (DEGREES F)
MAX…….49 NORMAL…..52
MIN…….30 NORMAL…..35
MEAN……40 NORMAL…..43
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-3
TOTAL DEPARTURE FOR THE MONTH…………………-11 [-1.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………25 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..228 DEPARTURE……..+9
TOTAL HEATING UNITS FOR THE SEASON………….578 DEPARTURE……-153
TOTAL HEATING UNITS LAST SEASON TO DATE……..502 DEPARTURE…….+76
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)……….E29 NW @ 09:29 A.M.
VECTOR #1 (1-Sec)……….26 NW @ 09:47 A.M.
VECTOR #2 (1-Sec)……….30 NW @ 10:17 A.M.
DAVIS #1……………….26 NW @ 09:29 A.M.
DAVIS #2 ………………27 NW @ 10:17 A.M.
RMY #1 (Instantaneous)…..30 NW @ 09:29 A.M.
RMY #2 (Instantaneous)…..30 NW @ 10:17 A.M.
MERLIN…………………25 NW
RICHARDS (C5C) (Inst)……29 @ 09:29 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 NW @ 09:37 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 10:18 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 09:38 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 WNW @ 10:18 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 NW @ 10:19 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 WNW @ 10:18 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 NW @ 09:38 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 @ 10:18 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………10.8 N [260 total miles]
VECTOR #1……………….11.2
VECTOR #2……………….11.8
DAVIS #1………………..11.5 NW
DAVIS #2………………..11.6 NNW
RMY #1………………….10.8 NW
RMY #2………………….11.6 NW
RICHARDS (C5C)…………..11.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.17 DEPARTURE…..-1.44
TOTAL PRECIPITATION FOR THE YEAR…………..49.36 DEPARTURE…..+3.59
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-1.1
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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/…/.. 23 W VEC1 23 W RMY 22
11/11 49/30/40/-3/0.00/0.0/…/.. 29 NW VEC1 26 NW RMY 30
11/12 The low since midnight is 27F, the daily normal low is 35F
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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 12
HIGH 74 IN 1909
LOW 18 IN 1926
PRECIP 3.39 INCHES IN 1947
SNOWFALL 8.1 INCHES IN 1987
PEAK GUST 79e MPH NW IN 1947
RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982
TODAY’S REPORT PREPARED BY: Matt Douglas
