Wednesday, November 24, 2021

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

WEDNESDAY, NOVEMBER 24, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0646E
SUNSET:  1615E

ABUNDANT SUNSHINE FOLLOWING THE COLDEST MORNING OF THE SEASON SO FAR….

Other than some ocean effect clouds offshore, the sky has been
crystal clear all day. We recorded our coldest temperature of the
season so far this morning with a low of 22F degrees. This was
some 9 degrees below normal for the date and the coldest reading
recorded since April 3rd when 23F degrees was measured!

Temperatures have rebounded this afternoon into the low 40s, but
with a busy breeze continuing for the second day in a row, the
wind chill has been making it feel considerably colder, only in the
low 30s.

The dew point is quite low once again, hanging in the teens once
again today.

As mentioned, the wind has been busy with speeds averaging around
16mph today, and a peak gust to 33mph thus far.

Visibility is of course excellent today with the super dry air. We’re
able to easily see 80 miles. Mount Monadnock, which is 67 miles NW of
Blue Hill, is coming in nice and clear today!

The high so far today is 40F, 7 degrees below the normal max of 47F.
The low since midnight is 22F, 9 degrees below the normal low of 31F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus offshore distant NE-SE
Temperature: 23F; Dew Point: 17F; Relative Humidity: 77%
Wind: NW @ 14G25 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 24F
6-hr Min temp: 22F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 80 219/23/17/3114G25/018/ FEW SC OFFSHR DSNT NE-SE/ 8/500
51027 10024 20022

10 A.M.
Weather: Clear, few stratocumulus offshore distant NE-SE
Temperature: 32F; Dew Point: 18F; Relative Humidity: 56%
Wind: NW @ 15G24 kts, peak wind NW 30 mph at 9:14 A.M.
Sea-level pressure: 1023.5 mb; 30.22 in Hg; rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 80 235/32/18/3215G24/022/ FEW SC OFFSHR DSNT NE-SE
PK WND 3126/14/ 8/500 51016

1 P.M.
Weather: Clear, few stratocumulus offshore distant NE-E
Temperature: 39F, Dew point: 14F; Relative Humidity: 36%
Wind: WNW @ 13G23 kts
Sea-level pressure: 1022.2 mb; 30.19 in Hg; falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 40F
6-hr Min temp: 23F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 80 222/39/14/2913G23/019/ FEW SC OFFSHR DSNT NE-E/ 8/500
56013 10040 20023

SUMMARY FOR TUESDAY, NOVEMBER 23, 2021

TEMPERATURE (DEGREES F)
MAX…….38     NORMAL…..47
MIN…….24     NORMAL…..32
MEAN……31     NORMAL…..39

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  -8
TOTAL DEPARTURE FOR THE MONTH……………………… +43 [+1.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………34  DEPARTURE……..+8
TOTAL HEATING UNITS FOR THE MONTH…………..460  DEPARTURE…….-44
TOTAL HEATING UNITS FOR THE SEASON………….787  DEPARTURE……-229
TOTAL HEATING UNITS LAST SEASON TO DATE……..834  DEPARTURE…… -44

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….36 NW  @  4:31 P.M.
AEROVANE……………….37 NW  @  4:31 P.M.
VECTOR #2 (Instantaneous)..39     @  4:31 P.M.
DAVIS #2 ………………33 NNW @  4:31 P.M.
RMY #2 (Instantaneous)…..37 NW  @  4:31 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………………23 NNW @  9:26 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23     @ 11:16 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 NNW @ 11:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 NNW @  9:24 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…….13.0 NW  [311 total miles] VECTOR #2……………..13.2
DAVIS #2………………13.0 NNW
RMY #2………………..12.9 NNW
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…..-0.14
TOTAL PRECIPITATION FOR THE MONTH………….1.80  DEPARTURE…..-1.45
TOTAL PRECIPITATION FOR THE YEAR………….56.65  DEPARTURE…..+9.50

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……-1.0
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0  DEPARTURE……-1.7

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   The low since midnight is 22F, 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 24
HIGH 69 IN 1931
LOW 7 IN 1897
PRECIP 1.76 INCHES IN 1901
SNOWFALL 4.5 INS IN 1936
PEAK GUST 69 SSW IN 1959

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

TODAY’S REPORT PREPARED BY: Matt Douglas