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Thursday, November 30, 2023

November 30, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, NOVEMBER 30, 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 30, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0652E
SUNSET:  1613E

MILDER TEMPERATURES AND LIGHTER WINDS UNDER PLENTY OF SUNSHINE…

The arctic air mass has departed the region leaving us with much
more comfortable temperatures today. The bright sunshine and
lighter wind is making it feel warmer today than the past couple
of days. Not a bad day to get any last minute raking of leaves
done.

Temperatures have reached the mid 40s early this afternoon, which
is actually around normal levels for this date. The dew point has
been inching upwards as well with readings in the low teens early
this morning reaching the low 20s early this afternoon.

As mentioned, the wind has been much lighter today with an average
speed of only around 9mph to this point. The peak gust so far is
around 20mph.

Visibility has been limited today due to haziness stuck below an
inversion. The view has only been between 30-40 miles.

The maximum temperature so far today is 45F degrees, this is
equal to the normal high of 45F. The minimum temperature since
midnight is 27F, this is 2 degrees below the normal low of 29F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few altocumulus distant WNW-N and distant NE-S
Temperature: 27F; Dew Point: 13F; Relative Humidity: 56%
Wind: SW @ 9 kts
Sea-level pressure: 1019.5 mb; 30.11 in. Hg: rising, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 28F
6-hr Min temp: 27F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 40 195/27/13/2309/011/ FEW AC DSNT WNW-N AND DSNT NE-S
HAZY/ 8/050 51017 10028 20027

10 A.M.
Weather: Clear, smoke layer below inversion all quadrants
Temperature: 37F; Dew Point: 17F; Relative Humidity: 44%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1020.9 mb; 30.15 in. Hg: rising, then more slowly
Visibility: 30 miles, hazy
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 30 209/37/17/2106/015/ K LYR BLW INVRSN ALQDS HAZY
WND LGT/ 8/000 51014

1 P.M.
Weather: Clear, few cirrus all quadrants
Temperature: 44F; Dew Point: 22F; Relative Humidity: 42%
Wind: SSW @ 10G15 kts
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 45F
6-hr Min temp: 27F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 40 189/44/22/2010G15/009/ FEW CI ALQDS HAZY/ 8/001
58020 10045 20027

————————————————————–

SUMMARY FOR WEDNESDAY, NOVEMBER 29, 2023

TEMPERATURE (DEGREES F)
MAX…….36   NORMAL…..45
MIN…….23   NORMAL…..30
MEAN……30   NORMAL…..38

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-8
TOTAL DEPARTURE FOR THE MONTH…………………-45 [-1.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………35  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH…………..708  DEPARTURE…….+44
TOTAL HEATING UNITS FOR THE SEASON…………1058  DEPARTURE……-118
TOTAL HEATING UNITS LAST SEASON TO DATE……..951  DEPARTURE……+107

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)……….E31 WNW  @  05:34 A.M.
VECTOR #1 (1-Sec)……….31 WNW  @  05:34 A.M.
VECTOR #2 (1-Sec)……….30 WNW  @  01:51 A.M.
DAVIS #1……………….31 W    @  05:34 A.M.
DAVIS #2 ………………28 WNW  @  03:47 A.M.
RMY #1 (Instantaneous)…..30 WNW  @  05:34 A.M.
RMY #2 (Instantaneous)…..30 WNW  @  03:46 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……31      @  05:34 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WNW  @  05:37 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19      @  09:15 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21      @  04:15 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 WNW  @  05:36 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 WNW  @  05:00 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 W    @  09:16 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 WNW  @  04:15 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19      @  09:16 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……11.3 WNW [271 total miles] VECTOR #1…………….11.3
VECTOR #2…………….12.2
DAVIS #1……………..11.5 W
DAVIS #2……………..12.2 W
RMY #1……………….10.9 W
RMY #2……………….12.0 W
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…………..2.18 DEPARTURE…..-1.97
TOTAL PRECIPITATION FOR THE YEAR…………..51.37 DEPARTURE…..+3.06

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-1.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-2.4

————————————————————–

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/+4/0.00/0.0/572/100        33 NW  VEC1 32 NW  RMY 33
11/24 47/26/37/-2/0.00/0.0/496/87         35 WNW VEC1 33 WNW RMY 33
11/25 35/20/28/-11/0.00/0.0/545/96        26 NW  VEC1 25 NW  RMY 26
11/26 43/27/35/-3/0.08/0.0/289/51         31 SE  VEC1 36 SE  RMY 32
11/27 53/34/44/+6/0.48/0.0/401/71         46 SE  VEC1 48 SE  RMY 47
11/28 38/26/32/-6/0.00/0.0/355/63         41 WNW VEC1 42 WNW RMY 43
11/29 36/23/30/-8/0.00/0.0/472/84         31 WNW VEC1 31 WNW RMY 30

11/30 The low since midnight is 27F, the daily normal low is 29F

————————————————————–

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 30
HIGH 67 IN 2006
LOW 6 IN 1891
PRECIP 2.50 INCHES IN 1944
SNOWFALL 10.2 INS IN 1945
PEAK GUST 90 SSW IN 1963

RECORDS FOR DECEMBER 1
HIGH 70 IN 2001
LOW 3 IN 1887
PRECIP 1.46 INS. IN 1917
SNOW 5.7 INS. IN 2019
PEAK GUST 72 MPH NW IN 1964

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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