Sunday, November 22, 2020

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

SUNDAY, NOVEMBER 22, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST AND CHILLY WITH A SLOW SEA BREEZE….

Today we observed mostly cloudy skies that became overcast
before the 10 A.M. observation. Visibility was good, being
75 miles on average. A sea breeze around 10 mph is coming in
from the northeast, with a max gust around 21 mph.

With most of the month behind us, we find ourselves sitting
at +5.7F departure thus far. This is on pace for one of the
warmest Novembers on record dating back 1885. We will see how
the remainder of the month goes!

We are once again going to complain about the rainfall deficit,
as we are 1.57 inches under on the month. The annual deficit is
4.17 inches. According to the drought monitor, we are still in
a Moderate drought.

The high so far today is 43F, 5 degrees below the daily
normal high of 48F. The low since midnight 33F, a degree
above the normal low of 32F.

Today’s Observations:

7 A.M.
Weather: Broken stratocumulus and cirrocumulus
Temperature: 34F; Dew Point: 27F; Relative Humidity: 75%
Wind: NNE at 9 kts
Sea-level pressure: 30.53 ins. Hg, falling then rising
Visibility: 75 miles
6-hr Max temp: 38F
6-hr Min temp: 33F
24-hr Precip: 0.00 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 30 BKN 250 BKN 75 337/34/27/0309/053/ 8/509
50008 10038 20033

10 A.M.
Weather: Overcast stratocumulus
Temperature: 42F; Dew Point: 33F; Relative Humidity: 71%
Wind: ENE at 9 kts, gusting to 18 kts
Sea-level pressure: 30.55 ins. Hg: rising steadily
Visibility: 75 miles, hazy
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 30 OVC 75 342/42/33/0709G18/055/ 8/5// 53005

1 P.M.
Weather: Overcast stratus
Temperature: 41F; Dew Point: 35F; Relative Humidity: 79%
Wind: ENE at 8 kts
Sea-level pressure: 30.51 ins. Hg: falling, then falling more rapidly
Visibility: 70 miles
6-hr Max temp: 43F
6-hr Min temp: 34F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 30 OVC 70 328/41/35/0708/051/ 8/6// 58014 10043 20034

SUMMARY FOR SATURDAY, NOVEMBER 21, 2020

TEMPERATURE (DEGREES F)
MAX…….62   NORMAL…..48
MIN…….40   NORMAL…..32
MEAN……51   NORMAL…..40

DEPARTURE FROM 30-YEAR NORMAL………………. +11
TOTAL DEPARTURE FOR THE MONTH……………….+125 [+5.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………14  DEPARTURE……-11
TOTAL HEATING UNITS FOR THE MONTH…………..333  DEPARTURE…..-124
TOTAL HEATING UNITS FOR THE SEASON………….785  DEPARTURE…..-235
TOTAL HEATING UNITS LAST SEASON TO DATE…….1008  DEPARTURE…..-223

PEAK WIND GUST FOR YESTERDAY (MPH):
420C/Official…………..24 W    AT  11:44 A.M.
AEROVANE (south tower)…..23 W    AT  12:44 P.M.
ASOS…………………..18 W    AT  12:46 P.M.
DAVIS #1……………….24 W    AT  11:44 A.M.
DAVIS #2 (south tower)…..24 W    AT   9:31 A.M.
RMY……………………27
VECTOR…………………27
MERLIN…………………24

FASTEST MILE FOR YESTERDAY:
CONTACTING/OFFICIAL………………………..18 WNW  AT  12:45 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….18 W    AT  12:46 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 W    AT  12:46 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 WNW  AT  12:45 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.9 W   [262 total miles] ASOS…………………11.0     [264 total miles] DAVIS #1……………..11.3 WNW [271 total miles] DAVIS #2……………..11.3 WNW [271 total miles] RMY………………….10.3 NW  [248 total miles] VECTOR……………….10.8     [250 total miles]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00  DEPARTURE….-0.16
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….1.74  DEPARTURE….-1.57
ASOS………….1.78
TOTAL PRECIPITATION FOR THE YEAR………….42.91  DEPARTURE….-4.17
ASOS………..43.73

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M………..0.0  DEPARTURE…..-0.1
TOTAL SNOWFALL FOR THE MONTH……………..Trace  DEPARTURE…..-1.0
TOTAL SNOWFALL FOR THE SEASON………………6.5  DEPARTURE…..+5.2

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   49/36/43/-3/0.69/0.0/006/01      38 W     AERO 40 W    RMY 39
11/02   40/31/36/-10/T/T/425/69          61 WNW   AERO 62 WNW  RMY 62
11/03   43/29/36/-10/0.00/0.0/473/77     48 WNW   AERO 53 WNW  RMY 48
11/04   54/30/42/-3/0.00/0.0/550/90      30 SSW   AERO 30 SSW  RMY 30
11/05   69/49/59/+14/0.00/0.0/548/90     37 SSW   AERO 40 SSW  RMY 38
11/06   72/55/64/+19/0.00/0.0/394/65     28 SW    AERO 28 SW   RMY M
11/07   75/54/65/+20/0.00/0.0/562/93     21 WSW   AERO 21 WSW  RMY 21
11/08   73/54/64/+20/0.00/0.0/584/97     18 W     AERO 18 W    RMY 19
11/09   74/52/63/+19/0.00/0.0/593/99     20 WSW   AERO 18 WSW  RMY 21
11/10   74/53/64/+20/0.00/0.0/597/100    30 SW    AERO 28 SW   RMY 31
11/11   73/58/66/+23/0.04/0.0/…/..     40 SW    AERO 44 SW   RMY 45
11/12   64/46/55/+12/0.04/0.0/…/..     32 NNW   AERO 31 NNW  RMY 33
11/13   48/38/43/0/0.30/0.0/…/..       22 NW    AERO 21 NW   RMY 25
11/14   49/32/41/-1/0.00/0.0/…/..      26 NW    AERO 28 NW   RMY 29
11/15   58/30/44/+2/0.62/0.0/…/..      60 S     AERO 67 S    RMY 65
11/16   53/39/46/+4/0.00/0.0/…/..      40 WNW   AERO 41 WNW  RMY 43
11/17   47/32/40/-1/0.00/0.0/…/..      28 NW    AERO 28 NW   RMY 30
11/18   32/19/26/-15/0.00/0.0/…/..     40 NW    AERO 46 NW   RMY 43
11/19   44/18/31/-10/0.00/0.0/…/..     37 SW    AERO 39 SW   RMY 43
11/20   63/44/54/+14/0.00/0.0/…/..     33 SSW   AERO 35 SSW  RMY 37
11/21   62/40/51/+11/0.00/0.0/…/..     24 W     AERO 23 W    RMY 27

11/22 The low since midnight is 33F, the daily normal low is 32F

DAILY RECORDS FOR NOVEMBER 2020

11/06/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 72F,
BREAKS PREVIOUS RECORD OF 71F SET IN 1959 AND 2015

11/07/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 75F,
TIES PREVIOUS RECORD OF 75F SET IN 1938

11/08/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 73F,
BREAKS PREVIOUS RECORD OF 72F SET IN 1938

11/09/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 74F,
BREAKS PREVIOUS RECORD OF 72F SET IN 1975

11/11/20: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 58F,
BREAKS PREVIOUS RECORD OF 56F IN 2002
DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 73F,
BREAKS PREVIOUS RECORD OF 68F IN 1984

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