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Sunday, November 19, 2023

November 19, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, NOVEMBER 19, 2023 ALL TIMES ARE…

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

SUNDAY, NOVEMBER 19, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0640E
SUNSET:  1619E

MUCH COOLER TODAY UNDER PLENTY OF SUNSHINE AND A BRISK WIND…

The most recent stretch of above normal temperatures have come
to an end as today has returned to slightly below to near normal
levels. The saving grace today is the abundance of sunshine which
is making for a very nice day overall.

Temperatures dropped into the upper 20s overnight into early this
morning, but have recovered to near 50F degrees early this afternoon,
which is slightly above the expected temperature for today’s date.
The dew point has been in the upper 20s to around 30 today, which is
considerably lower than the low 50s of yesterday morning.

Winds have been busy again today with frequent gusts 25-30mph
occurring. The average speed for the day so far is around 11mph.
The peak gust so far has been 38mph, which occurred just after the
1pm observation.

Visibility has been gradually increasing from 50 miles early this
morning to around 60-65 miles by early this afternoon.

The maximum temperature so far today is 50F, which is 1 degree
above the normal high of 49F. The minimum temperature since
midnight is 29F, which is 4 degrees below the normal low of 33F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear
Temperature: 31F; Dew Point: 26F; Relative Humidity: 79%
Wind: W @ 14G20 kts
Sea-level pressure: 1011.5 mb; 29.87 in. Hg: rising, then more rapidly
Visibility: 50 miles
6-hr Max temp: 31F
6-hr Min temp: 29F
24-hr Precip:  0.19 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 50 115/31/26/2714G20/987/ 8/000 53013 70019 10031 20029

10 A.M.
Weather: Clear, few stratocumulus distant WNW-NNW, few cirrus distant WNW-NNW
Temperature: 42F; Dew Point: 30F; Relative Humidity: 60%
Wind: W @ 10G20 kts
Sea-level pressure: 1012.0 mb; 29.88 in. Hg: rising unsteadily
Visibility: 50 miles
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 50 120/42/30/2610G20/988/ FEW SC DSNT WNW-NNW
FEW CI DSNT WNW-NNW/ 8/501 52005

1 P.M.
Weather: Clear, few stratocumulus all quadrants
Temperature: 49F; Dew Point: 28F; Relative Humidity: 43%
Wind: WNW @ 15G25 kts, peak wind WNW 31mph at 12:44 P.M.
Sea-level pressure: 1010.0 mb; 29.83 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 50F
6-hr Min temp: 31F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 60 100/49/28/2915G25/983/ FEW SC ALQDS PK WND 2927/44/
8/500 58020 10050 20031

————————————————————–

SUMMARY FOR SATURDAY, NOVEMBER 18, 2023

TEMPERATURE (DEGREES F)
MAX…….56   NORMAL…..49
MIN…….30   NORMAL…..33
MEAN……43   NORMAL…..41

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+2
TOTAL DEPARTURE FOR THE MONTH…………………-10 [-0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………22  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH…………..388  DEPARTURE……..+9
TOTAL HEATING UNITS FOR THE SEASON………….738  DEPARTURE……-153
TOTAL HEATING UNITS LAST SEASON TO DATE……..664  DEPARTURE…….+74

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 NW   @  02:27 P.M.
VECTOR #1 (1-Sec)……….35 NW   @  02:27 P.M.
VECTOR #2 (1-Sec)……….38 NNW  @  02:18 P.M.
DAVIS #1……………….35 WNW  @  02:27 P.M.
DAVIS #2 ………………36 NNW  @  02:18 P.M.
RMY #1 (Instantaneous)…..37 NNW  @  01:38 P.M.
RMY #2 (Instantaneous)…..38 NNW  @  01:39 P.M.
MERLIN…………………35 NW
RICHARDS (C5C) (Inst)……36      @  02:27 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 NW   @  05:47 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23      @  02:19 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24      @  02:19 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 NW   @  02:19 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 NNW  @  02:19 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 NW   @  02:18 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 NNW  @  02:19 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………23      @  02:18 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….13.2 NNW [316 total miles] VECTOR #1……………..13.0
VECTOR #2……………..13.5
DAVIS #1………………13.1 WNW
DAVIS #2………………13.5 NW
RMY #1………………..12.7 WNW
RMY #2………………..13.4 WNW
RICHARDS (C5C)…………13.1

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.19 DEPARTURE…..+0.06
TOTAL PRECIPITATION FOR THE MONTH…………..0.37 DEPARTURE…..-2.19
TOTAL PRECIPITATION FOR THE YEAR…………..49.56 DEPARTURE…..+2.84

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……-0.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-1.4

————————————————————–

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/…/..         30 WSW VEC1 31 WSW RMY 31
11/17 64/43/54/+13/0.00/0.0/…/..        35 SSW VEC1 36 SSW RMY 37
11/18 56/30/43/+2/0.20/0.0/…/..         35 NW  VEC1 35 NW  RMY 37

11/19 The low since midnight is 29F, the daily normal low is 33F

————————————————————–

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 19
HIGH 72 IN 1941
LOW 10 IN 1936
PRECIP 1.92 INCHES IN 1926
SNOWFALL 11.0 INS IN 1986
PEAK GUST 59e E IN 1945

RECORDS FOR NOVEMBER 20
HIGH 72 IN 1953
LOW 9 IN 1894
PRECIP 2.78 INS IN 1988
SNOWFALL 3.0 INS IN 1897
PEAK GUST 73e S IN 1950

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
Part I — Data Use Policy
§ 01

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