Saturday, November 13, 2021

| November 13, 2021 | Reply

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

SATURDAY, NOVEMBER 13, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0633E
SUNSET:  1624E

A MILDER FALL DAY ATOP GREAT BLUE HILL…

Yesterday’s rain totaled exactly an inch at the 7 A.M. observation.
Today was almost clear despite some distant mid and upper level
clouds. Despite fair weather conditions, pressure continues to
drop.

Dew points are in the mid 30’s, making for enjoyable autumn
weather.

The max gust for the storm yesterday is 72 mph, 7 degrees
below the daily record of 79 mph set in 1947!

The high so far today is 60F, 9 degrees above the normal max
of 51F. The low since midnight is 43F, 8 degrees above the
normal low of 35F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few distant altocumulus W-N and few
distant cirrostratus E-S
Temperature: 46F; Dew Point: 42F; Relative Humidity: 69%
Wind: SE @ 7 kts
Sea-level pressure: 1013.0 mb; 29.91 in. Hg: falling then rising
Visibility: 75 miles, dense ground fog, however.
6-hr Max temp: 47F
6-hr Min temp: 43F
24-hr Precip: 1.00 ins.
BHO SA 1155 CLR 75 130/46/42/1407/991/ FEW AC DSNT W-N FEW CS DSNT E-S AND W-N
PTCHY GF ALQDS/ 8/075 50002 70100 10047 20043

10 A.M.
Weather: Clear, few cirrostratus W-N-E-SE
Temperature: 54F; Dew Point: 37F; Relative Humidity: 51%
Wind: ESE @ 8 kts
Sea-level pressure: 1010.5 mb; 29.83 in Hg; falling unsteadily
Visibility: 75 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 75 105/54/37/1108/983/ FEW CS DSNT W-N-E-SE/
8/005 57025

1 P.M.
Weather: Clear, few cirrostratus
Temperature: 59F, Dew point: 34F; Relative Humidity: 31%
Wind: SE @ 9G19 kts
Sea-level pressure: 1006.3 mb; 29.72 in Hg; falling, then more
rapidly
Visibility: 75 miles
6-hr Max temp: 60F
6-hr Min temp: 46F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 75 063/59/34/1309G19/972/ FEW CS ALQDS/ 8/005 58042
10060 20046

SUMMARY FOR FRIDAY, NOVEMBER 12, 2021

TEMPERATURE (DEGREES F)
MAX…….61     NORMAL…..51
MIN…….45     NORMAL…..35
MEAN……53     NORMAL…..43

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  +10
TOTAL DEPARTURE FOR THE MONTH………………………  +29 [+2.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………12  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..210  DEPARTURE…….-31
TOTAL HEATING UNITS FOR THE SEASON………….537  DEPARTURE……-215
TOTAL HEATING UNITS LAST SEASON TO DATE……..576  DEPARTURE…… -39

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….72 SSE @  2:38 P.M.
AEROVANE……………….78 SSE @  2:34 P.M.
VECTOR #2 (Instantaneous)..75     @  2:38 P.M.
DAVIS #2 ………………79 S   @  2:39 P.M.
RMY #2 (Instantaneous)…..76 SSE @  2:38 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………………48 SSE @  2:32 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..47     @  2:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………48 S   @  3:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..47 S   @  2:44 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……. 20.4 SE [489 total miles]
VECTOR #2…………….. 20.2
DAVIS #2……………… 19.8 SSE
RMY #2……………….. 20.1 SSE
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…….1.00  DEPARTURE…..+0.86
TOTAL PRECIPITATION FOR THE MONTH………….1.00  DEPARTURE…..-0.75
TOTAL PRECIPITATION FOR THE YEAR………….55.85  DEPARTURE….+10.20

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH……………….0.0  DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0  DEPARTURE……-1.1

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/…/..      38 WNW AERO 39 WNW RMY 39
11/02   56/40/48/+1/0.00/0.0/…/..      25 SW  AERO 25 SW  RMY 26
11/03   51/35/43/-3/0.00/0.0/…/..      28 W   AERO 25 W   RMY 27
11/04   49/31/40/-6/0.00/0.0/…/..      17 NNE AERO 17 NNW RMY 16
11/05   49/32/41/-5/0.00/0.0/…/..      25 NW  AERO 24 NW  RMY 24
11/06   51/34/43/-2/0.00/0.0/…/..      18 SSW AERO 17 SW  RMY 19
11/07   55/37/46/+1/0.00/0.0/…/..      17 W   AERO 17 W   RMY 16
11/08   60/38/49/+4/0.00/0.0/…/..      20 N   AERO 18 N   RMY 19
11/09   69/45/57/+13/0.00/0.0/…/..     21 W   AERO 21 W   RMY 22
11/10   60/44/52/+8/0.00/0.0/…/..      36 NW  AERO 35 NW  RMY 35
11/11   56/40/48/+5/0.00/0.0/…/..      26 SE  AERO 28 SE  RMY 27
11/12   61/45/53/+10/…./0.0/…/..     72 SSE AERO 78 SSE RMY 76

11/13  The low since midnight is 43F, the daily normal low is 35F

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

RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982

RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997, 2014
PEAK GUST 63 W IN 2003

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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