Thursday, November 11, 2021

| November 11, 2021 | Reply

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

THURSDAY, NOVEMBER 11, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0630E
SUNSET:  1628E

SEASONABLE WITH LIGHT WIND AND GREAT VISIBILITY….

We observed a thin overcast for most of the day, mostly
consisting of almost transparent cirrostratus clouds.
Visibility was great at 80 miles, and sunshine was abundant
all day.

Wind was very light and calm at the 10 A.M. observation.
The max gust so far today happened very early this
morning.

Dew points hung around in the mid 20’s, making for a very enjoyable
Veteran’s Day.

November has been a dry month thus far with the first 11 days
not even registering a trace of rain. After the past 4 consecutive
months have had above normal rainfall, this continues to be a rather
nice reprieve.

The current monthly rain deficit is 1.46 inches. That’s fine
considering the annual total is 9.50 inches above normal.

The high so far today is 55F, 3 degrees above the normal max of
52F. The low since midnight is 40F, 5 degrees above the normal low
of 35F.

————————————————————–

PRELIMINARY STATS FOR OCTOBER 2021

TEMPERATURE, Deg. F
Avg. Max. 64.1 [+3.1]
Avg. Min. 49.4 [+5.4]
Mean      56.9 [+4.3]
24-hour corrected mean: 56.3
Max. for month: 75F on the 13th
Min. for month: 37F on the 24th and 29th

HEATING DEGREE DAYS
Total heating units:    253 [-14]
Total for the season:   327 [-185]
Total for last season:  452

COOLING DEGREE DAYS
Total cooling units:      3  [-4]
Total for the season:    717 [+40]
Total for last season:   831

PRECIPITATION, Inches
Total: 7.87 [+2.38]
Greatest in 24 hrs: 2.23 inches on the 26th-27th

WIND, mph
Avg. uncorrected wind speed: 10.9 mph
Avg. corrected wind speed:   11.4 mph
Prevailing wind direction:   WNW [10%]
Peak gust and direction:     66 NNE on the 27th

SUNSHINE:
Campbell-Stokes card minutes: 10494 minutes of a possible 19824 or 53%
Astronomical total minutes: 10865 minutes of a possible 20522 or 53%

—————————————————————-

Today’s Observations:

7 A.M.
Weather: Thin overcast cirrostratus
Temperature: 40F; Dew Point: 26F; Relative Humidity: 56%
Wind: N @ 8 kts
Sea-level pressure: 1027.2 mb; 30.33 in. Hg: rising unsteadily
Visibility: 75 miles
6-hr Max temp: 42F
6-hr Min temp: 40F
24-hr Precip: 0.00 ins.
BHO SA 1155 250 -OVC 75 272/40/26/3508/033/ 8/007 52016 10042 20040

10 A.M.
Weather: Thin overcast cirrocumulus with some breaks,
few altocumulus to the west
Temperature: 50F; Dew Point: 30F; Relative Humidity: 45%
Wind: Calm
Sea-level pressure: 1028.8 mb; 30.38 in Hg; rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 250 -OVC 80 288/50/30/0000/038/ BINOVC ALQDS FEW AC DSNT
W WND CALM/ 8/059 51016

1 P.M.
Weather: Thin overcast cirrocumulus with some breaks
Temperature: 55F, Dew point: 27F; Relative Humidity: 34%
Wind: SE @ 3 kts, light and variable
Sea-level pressure: 1027.6 mb; 30.34 in Hg; falling, then more
slowly
Visibility: 80 miles
6-hr Max temp: 55F
6-hr Min temp: 40F
6-hr Precip: 0.00 ins.
BHO SA 1755 250 -OVC 80 276/55/27/1303/034/ BINOVC ALQDS WND L/V/
8/009 56014 10055 20040

SUMMARY FOR WEDNESDAY, NOVEMBER 10, 2021

TEMPERATURE (DEGREES F)
MAX…….60     NORMAL…..52
MIN…….44     NORMAL…..36
MEAN……52     NORMAL…..44

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………  +8
TOTAL DEPARTURE FOR THE MONTH………………………  +14 [+1.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………13  DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH…………..181  DEPARTURE…….-16
TOTAL HEATING UNITS FOR THE SEASON………….508  DEPARTURE……-201
TOTAL HEATING UNITS LAST SEASON TO DATE……..566  DEPARTURE…… -58

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….36 NW  @  1:33 A.M.
AEROVANE……………….35 NW  @  1:33 A.M.
VECTOR #2 (Instantaneous)..38     @  1:33 A.M.
DAVIS #2 ………………33 N   @  1:32 A.M.
RMY #2 (Instantaneous)…..35 N   @  8:12 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………………25 WNW @  2:27 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @  1:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 NW  @  1:33 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 NW  @  1:33 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……. 8.0 NNW [215 total miles]
VECTOR #2…………….. 9.7
DAVIS #2……………… 9.4 N
RMY #2……………….. 9.4 N
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………….0.00  DEPARTURE…..-1.46
TOTAL PRECIPITATION FOR THE YEAR………….54.85  DEPARTURE…..+9.49

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……-0.4
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0  DEPARTURE……-1.1

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

10/01   64/44/54/-4/0.00/583/83          20 WNW AERO 20 WNW RMY N/A
10/02   73/47/60/+2/0.00/567/81          24 WSW AERO 23 WSW RMY N/A
10/03   65/55/60/+3/0.09/070/10          19 E   AERO 19 E   RMY N/A
10/04   59/51/55/-2/1.69/000/00          30 E   AERO 30 E   RMY N/A
10/05   58/50/54/-3/0.30/000/00          22 NNE AERO 23 NE  RMY N/A
10/06   69/50/60/+4/0.00/407/59          15 N   AERO 16 N   RMY N/A
10/07   73/55/64/+8/0.00/550/80          15 WSW AERO 15 W   RMY N/A
10/08   69/55/62/+7/T/616/90             24 ENE AERO 23 ENE RMY N/A
10/09   62/54/58/+3/0.01/273/40          23 E   AERO 23 E   RMY N/A
10/10   62/54/58/+3/T/000/00             22 E   AERO 21 E   RMY N/A
10/11   67/56/62/+8/0.01/371/55          20 NE  AERO 21 NE  RMY N/A
10/12   72/54/63/+9/0.00/612/91          15 SW  AERO 15 SW  RMY N/A
10/13   75/55/65/+11/0.00/630/94         18 SW  AERO 18 SW  RMY N/A
10/14   73/56/65/+12/0.00/614/92         19 N   AERO 20 N   RMY N/A
10/15   74/55/67/+14/0.00/452/68         24 S   AERO 24 SSW RMY N/A
10/16   73/59/66/+14/0.06/351/53         43 S   AERO 50 S   RMY 44
10/17   62/47/55/+3/0.25/580/88          32 WNW AERO 31 WNW RMY 31
10/18   60/42/51/-1/0.01/544/83          31 NW  AERO 32 NW  RMY 33
10/19   59/40/50/-1/0.00/653/100         35 WNW AERO 37 W   RMY 38
10/20   70/49/60/+9/0.00/560/86          23 W   AERO 23 W   RMY 23
10/21   74/56/65/+14/0.00/473/73         30 SSW AERO 32 S   RMY 32
10/22   71/51/61/+11/0.00/535/83         27 S   AERO 30 S   RMY 29
10/23   60/44/52/+2/0.00/475/74          24 NW  AERO 22 NW  RMY 24
10/24   57/37/47/-3/0.01/589/92          25 NNW AERO 25 NNW RMY 25
10/25   56/47/52/+3/0.63/000/00          29 NE  AERO 30 NE  RMY 32
10/26   61/47/54/+5/2.23/000/00          49 NNE AERO 56 N   RMY 54
10/27   48/44/46/-3/0.87/000/00          66 NNE AERO 74 NNE RMY 65
10/28   48/39/44/-4/0.00/000/00          26 NNE AERO 26 NNE RMY 28
10/29   49/37/43/-5/0.00/000/00          25 ENE AERO 24 ENE RMY 24
10/30   59/49/54/+7/1.02/000/00          33 E   AERO 32 E   RMY 33
10/31   64/51/58/+11/0.69/360/58         33 WNW AERO 35 SW  RMY 35

RECORDS FOR THE MONTH:

Peak Gust of 66 MPH NNE on the 27th, beating the old record of
54 WNW, NE set in 1968 and 2018.

Daily Precipitation of 2.23 inches on the 26th, beating the old
record of 1.57 inches in 1898.

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   The low since midnight is 40F, 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 11
HIGH 73 IN 2020
LOW 17 IN 1956
PRECIP 1.14 INCHES IN 1991
SNOWFALL 2.5 IN 1986
PEAK GUST 64 NW IN 1962

RECORDS FOR NOVEMBER 12
HIGH 74 IN 1909
LOW 18 IN 1926
PRECIP 3.39 INCHES IN 1947
SNOWFALL 8.1 INCHES IN 1987
PEAK GUST 79e MPH NW IN 1947

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

Leave a Reply