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Thursday, November 9, 2023

November 9, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, NOVEMBER 9, 2023 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

THURSDAY, NOVEMBER 9, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0627E
SUNSET:  1628E

OVERCAST, DAMP, AND COLD WITH PERIODS OF RAIN AND SLEET THIS MORNING…

A storm system passing well to our northwest has brought a band
of precipitation across the area today. It has been cold enough
that some of the precipitation has fallen in the form of sleet
early this morning. There was some minor accumulation on some
of the colder surfaces, but not enough to call it a tenth, as
such, we have yet to record any measurable “snowfall” so far
this season. Of course, we all know it’s still quite early!

Liquid equivalent precipitation has totalled 0.09″ so far for
today, so all in all the rain and sleet have been on the light
side. The month continues to exhibit a healthy deficit, with
the total being more than 1 inch below normal to date.

Temperatures have remained on the cold side with readings holding
in the 30s today. With the dew point also in the 30s, it just feels
raw out there today. Rather typical of November.

Winds have been on the light side with variable directions this
morning, finally settling on more of an easterly direction as we
moved through the late morning and early afternoon hours. The
average speed so far is only around 7mph. A peak gust of around
18mph has been measured so far for the day.

Prevailing visibility was around 40 miles this morning, with lower
values during times of precipitation, however visibility has
markedly decreased early this afternoon as we’re now into the
clouds. The visibility has dropped to around 1/4 mile.

The maximum temperature so far today is 40F, which is 12 degrees
below the normal high of 52F. The minimum temperature since
midnight is 32F, which is 4 degrees below the normal low of 36F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast altocumulus/altostratus, light rain and sleet
Temperature: 34F; Dew Point: 28F; Relative Humidity: 78%
Wind: E @ 2 kts, wind light
Sea-level pressure: 1016.2 mb; 30.01 in. Hg: rising unsteadily
Visibility: 40 miles, 15 miles WSW-NW
6-hr Max temp: 34F
6-hr Min temp: 33F
24-hr Precip:  Trace
24-hr Snowfall: Trace
BHO SA 1155 E60 OVC 40R-IP- 162/34/28/1002/001/ THN K LYR DSNT NNW-NNE
VSBY 15 WSW-NW R-IP-B55 WND LGT TOTAL NEW SNW PST 24 HRS TRACE/ 8/07/
52002 6000/ 70000 10034 20033

10 A.M.
Weather: Overcast altostratus, few stratus fractus all quadrants,
few stratocumulus offshore distant ENE-E, virga all quadrants
Temperature: 35F; Dew Point: 34F; Relative Humidity: 95%
Wind: ESE @ 9 kts
Sea-level pressure: 1014.4 mb; 29.96 in. Hg: falling unsteadily
Visibility: 40 miles, lower WNW-NW
3-hr Precip:  0.07 inches
3-hr Snowfall: Trace
BHO SA 1455 E45 OVC 40 144/35/34/1109/996/ FEW STFRA ALQDS FEW SC OFFSHR
DSNT ENE-E THN K LYR ALNG HRZN S-W-N VIRGA ALQDS VSBY LWR WNW-NW TOTAL
NEW SNW PST 3 HRS TRACE/ 8/72/ 57018 6007/

1 P.M.
Weather: Sky obscured, vertical visibility 300ft, light drizzle
Temperature: 39F; Dew Point: 39F; Relative Humidity: 100%
Wind: ESE @ 8 kts
Sea-level pressure: 1011.2 mb; 29.86 in. Hg: falling, then more slowly
Visibility: 1/4 mile, fog
6-hr Max temp: 40F
6-hr Min temp: 32F
6-hr Precip:  0.09 inches
6-hr Snowfall: Trace
BHO SA 1755 X W3 1/4L-F 112/39/39/1108/986/ TOTAL NEW SNW PST 6 HRS
TRACE/ 8//// 56032 6009/ 10040 20032

————————————————————–

SUMMARY FOR WEDNESDAY, NOVEMBER 8, 2023

TEMPERATURE (DEGREES F)
MAX…….48   NORMAL…..53
MIN…….33   NORMAL…..36
MEAN……41   NORMAL…..45

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-4
TOTAL DEPARTURE FOR THE MONTH………………….-1 [-0.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………24  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..154  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON………….504  DEPARTURE……-163
TOTAL HEATING UNITS LAST SEASON TO DATE……..463  DEPARTURE…….+41

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)……….E36 NNW  @  04:18 A.M.
VECTOR #1 (1-Sec)……….38 NNW  @  04:18 A.M.
VECTOR #2 (1-Sec)……….37 NW   @  04:11 A.M.
DAVIS #1……………….37 NNW  @  04:18 A.M.
DAVIS #2 ………………34 NW   @  04:17 A.M.
RMY #1 (Instantaneous)…..39 NNW  @  04:18 A.M.
RMY #2 (Instantaneous)…..39 NW   @  04:13 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……36      @  04:18 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………26 NW   @  04:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..24      @  09:22 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25      @  04:15 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………26 NW   @  09:22 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 NNW  @  04:15 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..25 NW   @  09:22 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 NNW  @  04:15 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………25      @  09:22 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.7 NW [328 total miles] VECTOR #1………………13.4
VECTOR #2………………14.4
DAVIS #1……………….13.8 NW
DAVIS #2……………….14.1 NNW
RMY #1…………………13.0 NW
RMY #2…………………14.0 NW
RICHARDS (C5C)………….13.8

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.06 DEPARTURE…..-1.11
TOTAL PRECIPITATION FOR THE YEAR…………..49.25 DEPARTURE…..+3.92

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-1.0

————————————————————–

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 The low since midnight is 32F, the daily normal low is 36F

————————————————————–

NOVEMBER DAILY RECORDS TO DATE

11/1 TIED RECORD FOR SNOWFALL WITH A TRACE, TIED WITH 1906, 1951

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR NOVEMBER 9
HIGH 74 IN 2020
LOW 17 IN 1971
PRECIP 1.37 INCHES IN 1969
SNOWFALL 0.5 IN 1892
PEAK GUST 73e S IN 1943

RECORDS FOR NOVEMBER 10
HIGH 75 IN 1931
LOW 20 IN 2004
PRECIP 2.11 INCHES IN 1888
SNOWFALL 2.2 IN 1987
PEAK GUST 83e S IN 1942

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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