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Thursday, November 25, 2021

November 25, 2021

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, NOVEMBER 25, 2021 ALL TIMES ARE…

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

THURSDAY, NOVEMBER 25, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0647E
SUNSET:  1615E

…HAPPY THANKSGIVING FROM BLUE HILL OBSERVATORY…
CLOUDS INCREASING WITH MUCH MILDER AIR AND LIGHT WIND….

Clouds have been on the increase most of the day as a weather system
gradually approaches from the west and promises to bring us some wet
weather late tonight into tomorrow morning. Regardless, with
temperatures rising into the low-mid 50s this afternoon, it has been
a very pleasant holiday for the region.

The air remains dry with the dew point rising through the mid 20s.

The wind has been quite light when compared with the past few days.
The average speed for the day has been around 12mph so far, however
it’s been less than 10mph since the late morning hours.

Visibility is in the process of decreasing as we gradually increase
the moisture content of the atmosphere. We started the day seeing
70 miles early this morning, but it has since decreased to around 60
miles.

The high so far today is 52F, 5 degrees above the normal max of 47F.
The low since midnight is 31F, equal to the normal low of 31F.

Here are Thanksgiving stats for Blue Hill as compiled by our Chief
Scientist Mike Iacono…

BHO Thanksgiving Day Extremes:

Warmest: November 22, 2007
High: 64F; Low: 40F

Coldest: November 22, 2018
High: 20F; Low: 9F

Wettest: November 23, 2006
Precipitation: 2.33 inches; (Storm total 3.02 inches 23rd-24th)

Snowiest: November 23, 1989
Snowfall: 5.5 inches
High: 26F; Low: 13F

Windiest: November 26, 1964
Peak Gust: 78 mph, SSE
Precipitation: 1.28 inches; (Storm total 1.48 inches 25th-26th)
High: 57F; Low: 47F

BHO Thanksgiving Day Normals, 1991-2020 (Nov 22nd-28th Mean)
High: 47F; Low: 31F
Precipitation: 0.15 inches
Snowfall: 0.1 inches

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered cirrocumulus, thin scattered cirrus
Temperature: 33F; Dew Point: 23F; Relative Humidity: 66%
Wind: WNW @ 12G17 kts
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 33F
6-hr Min temp: 31F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 180 SCT 250 -SCT 70 189/33/23/2912G17/009/ 8/009 56008 10033 20031

10 A.M.
Weather: Scattered cirrocumulus, thin scattered cirrus
Temperature: 44F; Dew Point: 24F; Relative Humidity: 45%
Wind: W @ 7 kts
Sea-level pressure: 1017.0 mb; 30.03 in Hg; falling, then more rapidly
Visibility: 60 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 180 SCT 250 -BKN 60 170/44/24/2807/003/ 8/009 58019

1 P.M.
Weather: Scattered altocumulus, scattered cirrocumulus, overcast cirrus,
few breaks in overcast NE-SE
Temperature: 51F, Dew point: 25F; Relative Humidity: 35%
Wind: WNW @ 5 kts, wind light
Sea-level pressure: 1013.8 mb; 29.94 in Hg; falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 52F
6-hr Min temp: 33F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 140 SCT 200 SCT E250 OVC 60 138/51/25/2905/994/ FEW BINOVC NE-SE
WND LGT/ 8/059 56032 10052 20033

SUMMARY FOR WEDNESDAY, NOVEMBER 24, 2021

TEMPERATURE (DEGREES F)
MAX…….41     NORMAL…..47
MIN…….22     NORMAL…..31
MEAN……32     NORMAL…..39

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  -7
TOTAL DEPARTURE FOR THE MONTH……………………… +36 [+1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………33  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH…………..493  DEPARTURE…….-37
TOTAL HEATING UNITS FOR THE SEASON………….820  DEPARTURE……-221
TOTAL HEATING UNITS LAST SEASON TO DATE……..861  DEPARTURE…… -41

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….33 NW  @  1:05 A.M.
AEROVANE……………….32 NW  @ 10:42 A.M.
VECTOR #2 (Instantaneous)..36     @ 12:30 A.M.
DAVIS #2 ………………31 NW  @  1:05 A.M.
RMY #2 (Instantaneous)…..34 NNW @ 12:30 A.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 NW  @ 10:26 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23     @ 10:19 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 NNW @ 10:19 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 NW  @ 10:19 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE…..OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….14.8 NW  [354 total miles] VECTOR #2……………..15.3
DAVIS #2………………15.0 NNW
RMY #2………………..14.9 NW
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00  DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH………….1.80  DEPARTURE…..-1.60
TOTAL PRECIPITATION FOR THE YEAR………….56.65  DEPARTURE…..+9.35

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH……………….0.0  DEPARTURE……-1.1
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0  DEPARTURE……-1.8

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

11/01   59/41/50/+3/0.00/0.0/594/96      38 WNW AERO 39 WNW RMY 39
11/02   56/40/48/+1/0.00/0.0/247/40      25 SW  AERO 25 SW  RMY 26
11/03   51/35/43/-3/0.00/0.0/572/93      28 W   AERO 25 W   RMY 27
11/04   49/31/40/-6/0.00/0.0/446/73      17 NNE AERO 17 NNW RMY 16
11/05   49/32/41/-5/0.00/0.0/591/97      25 NW  AERO 24 NW  RMY 24
11/06   51/34/43/-2/0.00/0.0/595/98      18 SSW AERO 17 SW  RMY 19
11/07   55/37/46/+1/0.00/0.0/514/85      17 W   AERO 17 W   RMY 16
11/08   60/38/49/+4/0.00/0.0/578/96      20 N   AERO 18 N   RMY 19
11/09   69/45/57/+13/0.00/0.0/582/97     21 W   AERO 21 W   RMY 22
11/10   60/44/52/+8/0.00/0.0/389/65      36 NW  AERO 35 NW  RMY 35
11/11   56/40/48/+5/0.00/0.0/501/84      26 SE  AERO 28 SE  RMY 27
11/12   61/45/53/+10/1.00/0.0/000/00     72 SSE AERO 78 SSE RMY 76
11/13   60/36/48/+5/0.32/0.0/556/94      53 SW  AERO 53 SW  RMY 54
11/14   47/33/40/-2/0.03/0.0/336/57      29 W   AERO 28 W   RMY 28
11/15   48/36/42/0/0.07/0.0/405/69       35 W   AERO 36 W   RMY 38
11/16   46/31/39/-3/0.00/0.0/…/..      40 WNW AERO 41 WNW RMY 42
11/17   49/30/40/-1/0.00/0.0/…/..      34 S   AERO 36 S   RMY 34
11/18   69/49/59/+18/T/0.0/…/..        39 NW  AERO 36 WNW RMY 42
11/19   51/32/42/+1/0.29/0.0/…/..      42 W   AERO 41 W   RMY 41
11/20   45/27/36/-4/0.00/0.0/…/..      23 S   AERO 23 S   RMY 24
11/21   52/36/44/+4/T/0.0/…/..         35 S   AERO 35 S   RMY 36
11/22   55/33/44/+4/0.09/0.0/…/..      41 WSW AERO 41 WSW RMY 42
11/23   38/24/31/-8/0.00/0.0/…/..      36 NW  AERO 37 NW  RMY 37
11/24   41/22/32/-7/0.00/0.0/…/..      33 NW  AERO 32 NW  RMY 34

11/25   The low since midnight is 31F, the daily normal low is 31F

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: 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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Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts
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