Monday, November 22, 2021

| November 22, 2021 | Reply

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

MONDAY, NOVEMBER 22, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0643E
SUNSET:  1617E

LIGHT RAIN AND OVERCAST SKIES THE THEME SO FAR….

We observed limited visibility this morning due to fog, limiting our
view to 10 miles on average. Skies were overcast with some light rain
falling intermittently. Overnight rain totaled only 0.03 inches, which
is much less compared to locations south and east of the observatory.

Additional rainfall occurred between 7 A.M. and 10 A.M. today, leaving
another 0.06 inches in the gauge.

The wind has been shifting from south to northwest and decreasing in intensity
since early on this morning. The average speed is less than 10 mph with
a max gust of 41 mph happening around 5 A.M.

Visibility increased after the light rain ended around 10 A.M. It was
70 miles at the 1 P.M. observation!

The high so far today is 52F, 4 degrees above the normal max of 48F.
The low since midnight is 48F, 16 degrees above the normal low of 32F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered stratocumulus, Overcast altocumulus, rain ending
earlier on in the hour.
Temperature: 51F; Dew Point: 49F; Relative Humidity: 91%
Wind: SW @ 11G17 kts
Sea-level pressure: 1009.7 mb; 29.82 in. Hg: falling, then more slowly
Visibility: 15 miles, thin fog
6-hr Max temp: 55F
6-hr Min temp: 51F
24-hr Precip: 0.00 ins.
BHO SA 1155 20 SCT 80 OVC 15 097/51/49/2211G17/982/ THN F ALQDS R-EUKN/ 8/47/
56012 70003 10055 20051

10 A.M.
Weather: Scattered stratocumulus, overcast nimbostratus, rain ending around
9:55 A.M.
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: WSW @ 10G16 kts
Sea-level pressure: 1009.7 mb; 29.82 in Hg; falling, then more rapidly
Visibility: 10 miles, thin fog
3-hr Precip: 0.06 ins.
BHO SA 1455 20 SCT 80 OVC 10R- 097/50/50/2510G16/982/ THN F ALQDS R-E55/ 8/42/
6006/ 50000

1 P.M.
Weather: Scattered stratocumulus, broken altocumulus, overcast cirrostratus,
sun dimly visible
Temperature: 50F, Dew point: 44F; Relative Humidity: 79%
Wind: NW @ 5 kts, wind light
Sea-level pressure: 1007.7 mb; 29.76 in Hg; falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 52F
6-hr Min temp: 48F
6-hr Precip: 0.06 ins.
BHO SA 1755 20 SCT 100 BKN 220 OVC 70 077/50/44/3105/976/ SUN DMLY VSBL WND LGT/
8/878 6006/ 56020 10052 20048

SUMMARY FOR SUNDAY, NOVEMBER 21, 2021

TEMPERATURE (DEGREES F)
MAX…….52     NORMAL…..48
MIN…….36     NORMAL…..32
MEAN……44     NORMAL…..40

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  +4
TOTAL DEPARTURE FOR THE MONTH……………………… +47 [+2.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………21  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..405  DEPARTURE…….-48
TOTAL HEATING UNITS FOR THE SEASON………….732  DEPARTURE……-233
TOTAL HEATING UNITS LAST SEASON TO DATE……..785  DEPARTURE…… -53

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….35 S   @ 11:58 P.M.
AEROVANE……………….35 S   @ 11:58 P.M.
VECTOR #2 (Instantaneous)..36     @ 11:58 P.M.
DAVIS #2 ………………44 S   @ 11:58 P.M.
RMY #2 (Instantaneous)…..37 S   @ 11:58 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………………26 S   @ 11:58 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @ 11:59 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 S   @ 11:58 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 S   @ 11:59 P.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…….11.6 S   [279 total miles]
VECTOR #2……………..12.5
DAVIS #2………………12.7 SSW
RMY #2………………..12.7 SSW
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…….0.03  DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH………….1.74  DEPARTURE…..-1.23
TOTAL PRECIPITATION FOR THE YEAR………….56.59  DEPARTURE…..+9.72

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……-0.8
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0  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/…./…/…/..      35 S   AERO 35 S   RMY 36

11/22   The low since midnight is 51F, the daily normal low is 32F

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

RECORDS FOR NOVEMBER 22
HIGH 70 IN 1931
LOW 9 IN 2018
PRECIP 1.78 INS IN 2005
SNOWFALL 9.0 INS IN 1971
PEAK GUST 70e SE IN 1945

RECORDS FOR NOVEMBER 23
HIGH 73 IN 1931
LOW 9 IN 1888, 2018
PRECIP 2.33 INS IN 2006
SNOWFALL 5.5 INS IN 1989
PEAK GUST 64e S IN 1953

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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