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Wednesday, December 1, 2021

December 1, 2021

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, DECEMBER 1, 2021 ALL TIMES ARE…

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

WEDNESDAY, DECEMBER 1, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0654E
SUNSET:  1613E

MILDER WITH MOSTLY CLOUDY SKIES AND A COOL WESTERLY BREEZE….

We observed an average visibility of 35 miles, with a max of
80 miles at the 10 A.M. observation. Skies were mostly cloudy
for the majority of the day.

There is a chilly north westerly breeze with an average speed of
10 mph and a max gust around 26 mph.

Temperatures are trending back to normal for this time of year.

The high so far today is 44F, which is a degree below the normal
max of 45F. The low since midnight is 30F, a degree above the
normal low of 29F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus and broken cirrostratus
Temperature: 31F; Dew Point: 28F; Relative Humidity: 89%
Wind: SW @ 10G15 kts
Sea-level pressure: 1017.0 mb; 30.03 in. Hg: rising, then more
rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 31F
6-hr Min temp: 30F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 70 SCT 250 BKN 20 170/31/28/2410G15/003/ THN F ALQDS/
8/056 53022 10031 20030

10 A.M.
Weather: Scattered altocumulus and broken cirrostratus
Temperature: 39F; Dew Point: 29F; Relative Humidity: 57%
Wind: W @ 14G19 kts
Sea-level pressure: 1017.4 mb; 30.04 in Hg; rising then falling
Visibility: 35 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 70 SCT 250 BKN 35 174/39/29/2814G19/004/ 8/056 51004

1 P.M.
Weather: Scattered altocumulus and broken cirrostratus, few
stratocumulus W-WNW, breaks in overcast ENE-S-SSW
Temperature: 42F, Dew point: 27F; Relative Humidity: 54%
Wind: NW @ 10G17 kts
Sea-level pressure: 1017.1 mb; 30.03 in Hg; rising then falling
Visibility: 75 miles
6-hr Max temp: 44F
6-hr Min temp: 31F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 170 SCT 250 OVC 75 171/42/27/3110G17/003/ FEW SC W-NNW BINOVC
ENE-S-SSW/ 8/856 55003 10044 20031

SUMMARY FOR TUESDAY, NOVEMBER 30, 2021

TEMPERATURE (DEGREES F)
MAX…….40     NORMAL…..45
MIN…….21     NORMAL…..29
MEAN……31     NORMAL…..37

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  -6
TOTAL DEPARTURE FOR THE MONTH……………………… +12 [+0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………34  DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH…………..680  DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE SEASON…………1007  DEPARTURE……-197
TOTAL HEATING UNITS LAST SEASON TO DATE……..973  DEPARTURE…… +34

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….27 WNW @  1:11 A.M.
AEROVANE……………….23 WSW @  2:01 P.M.
VECTOR #2 (Instantaneous)..28     @  1:11 P.M.
DAVIS #2 ………………24 W   @  2:17 P.M.
RMY #2 (Instantaneous)…..26 WNW @  1:11 P.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………………16 WSW @  2:02 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18     @ 12:57 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 WSW @ 12:42 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 WNW @ 12:57 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……..9.9 SW  [238 total miles] VECTOR #2……………..10.5
DAVIS #2………………10.7 W
RMY #2………………..10.6 W
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…..-0.16
TOTAL PRECIPITATION FOR THE MONTH………….1.92  DEPARTURE…..-2.39
TOTAL PRECIPITATION FOR THE YEAR………….56.77  DEPARTURE…..+8.56

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH……………….1.0  DEPARTURE……-0.8
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……1.0  DEPARTURE……-1.5

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   53/31/42/+3/0.00/0.0/…/..      21 WNW AERO 21 W   RMY 21
11/26   43/31/37/-1/0.11/0.9/…/..      39 WNW AERO 39 WNW RMY 41
11/27   37/24/31/-7/0.01/0.1/…/..      47 WNW AERO 45 WNW RMY 48
11/28   36/24/30/-8/T/T/…/..           22 W   AERO 21 W   RMY 23
11/29   39/25/32/-6/0.00/0.0/…/..      30 NW  AERO 28 NW  RMY 30
11/30   40/21/31/-6/0.00/0.0/…/..      27 WNW AERO 23 WSW RMY 26

12/01   The low since midnight is 30F, the daily normal low is 29F

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

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

RECORDS FOR DECEMBER 2
HIGH 61 IN 1998
LOW 3 IN 1890
PRECIP 2.09 INS. IN 1974
SNOWFALL 5.0 INS. IN 1894, 1929
PEAK GUST 89e MPH SSE IN 1942

TODAY’S REPORT PREPARED BY: Benjamin Turner

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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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