Thursday, November 26, 2020

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

THURSDAY, NOVEMBER 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

MILD, BREEZY, AND WET FOR THANKSGIVING 2020….

On behalf of all the staff here at Blue Hill Observatory,
I’d like to wish everyone a happy, healthy, and safe
Thanksgiving!

Another mild day here, but this time it’s coming with
a busy south wind and periods of rain. So far rainfall
has only totaled 0.32″ through 1 P.M., so while it hasn’t
been heavy, it has been persistent.

South winds have been gusting up to 35 MPH, which is
the peak so far today. The average speed since 7 A.M.
has been around 17 MPH!

The high so far today is 58F, 12 degrees above the daily
normal high of 46F. The low since midnight is 45F, 15
degrees above the normal low of 30F.

Today’s Observations:

7 A.M.
Weather: Broken stratus fractus, overcast nimbostratus, light rain
Temperature: 52F; Dew Point: 52F; Relative Humidity: 100%
Wind: S at 18G24 kts, peak wind 30 MPH S at 6:28 A.M.
Sea-level pressure: 30.11 in Hg; falling, then more rapidly
Visibility: 3 miles, fog; 6 miles S-W, 1 mile N-E
6-hr Max temp: 52F
6-hr Min temp: 45F
24-hr Precip: 0.05 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E1 BKN 85 OVC 3R-F 197/52/52/1718G24/011/ STFRA OCLY
DRFTG OVR SMT VSBY 6 S-W 1 N-E PCPN VRY LGT PK WND 1726/28/ 8/72/
58026 70005 10052 20045

10 A.M.
Weather: Sky obscured, vertical visibility 200 ft, light rain
Temperature: 55F; Dew Point: 55F; Relative Humidity: 100%
Wind: S at 16G22 kts
Sea-level pressure: 30.08 in Hg; falling, then more rapidly
Visibility: 1/4 mile, fog
3-hr Precip: 0.18 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 X W2 1/4R-F 186/55/55/1716G22/008/ 8//// 58011 6018/

1 P.M.
Weather: Overcast stratus/stratus fractus, light rain
Temperature: 58F; Dew Point: 58F; Relative Humidity: 100%
Wind: S at 17G22 kts, peak wind 31 MPH S at 12:02 P.M.
Sea-level pressure: 29.98 in Hg; falling, then more rapidly
Visibility: 8 miles, thin fog, 3 miles S-SW
6-hr Max temp: 58F
6-hr Min temp: 52F
6-hr Precip: 0.27 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E10 OVC 8R- 152/58/58/1817G22/998/ VSBY 3 S-SW THN F
ALQDS PK WND 1827/02/ 8/7// 58034 6027/ 10058 20052

SUMMARY FOR WEDNESDAY, NOVEMBER 25, 2020

TEMPERATURE (DEGREES F)
MAX…….50   NORMAL…..47
MIN…….26   NORMAL…..31
MEAN……38   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL……………….  -1
TOTAL DEPARTURE FOR THE MONTH……………….+115 [+4.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………27  DEPARTURE…… +1
TOTAL HEATING UNITS FOR THE MONTH…………..436  DEPARTURE…..-124
TOTAL HEATING UNITS FOR THE SEASON………….888  DEPARTURE…..-236
TOTAL HEATING UNITS LAST SEASON TO DATE…….1108  DEPARTURE…..-220

PEAK WIND GUST FOR YESTERDAY (MPH):
420C/Official…………..23 SSE  AT  11:05 A.M.
AEROVANE (south tower)…..23 SSE  AT  11:03 A.M.
ASOS…………………..24 SW   AT   6:49 P.M.
DAVIS #1……………….25 SSE  AT  11:04 A.M.
DAVIS #2 (south tower)…..25 SE   AT  11:10 A.M.
RMY……………………26
VECTOR…………………29
MERLIN…………………N/A

FASTEST MILE FOR YESTERDAY:
CONTACTING/OFFICIAL………………………..18 SSE  AT  11:27 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….17 SW   AT   6:54 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 SSE  AT  11:17 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 SE   AT  11:16 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…… 9.0 SW  [215 total miles] ASOS………………… 9.4     [226 total miles] DAVIS #1…………….. 9.3 S   [223 total miles] DAVIS #2…………….. 9.8 S   [235 total miles] RMY…………………. 9.2 SSW [221 total miles] VECTOR………………. 9.6     [230 total miles]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.05  DEPARTURE….-0.11
ASOS………….0.04
TOTAL PRECIPITATION FOR THE MONTH………….3.56  DEPARTURE….-0.39
ASOS………….3.64
TOTAL PRECIPITATION FOR THE YEAR………….44.73  DEPARTURE….-2.99
ASOS………..45.59

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M………..0.0  DEPARTURE…..-0.2
TOTAL SNOWFALL FOR THE MONTH……………..Trace  DEPARTURE…..-1.7
TOTAL SNOWFALL FOR THE SEASON………………6.5  DEPARTURE…..+4.5

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   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   45/33/39/-1/T/0.0/…/..         28 SE    AERO 28 SE   RMY 31
11/23   58/32/45/+6/1.77/0.0/…/..      42 WNW   AERO 48 WNW  RMY 46 TSTM
11/24   42/27/35/-4/0.00/0.0/…/..      31 WNW   AERO 32 WNW  RMY 33
11/25   50/26/38/-1/…./0.0/…/..      23 SSE   AERO 23 SSE  RMY 26

11/26 The low since midnight is 45F, the daily normal low is 30F

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 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964

RECORDS FOR NOVEMBER 27
HIGH 68 IN 1896
LOW 5 IN 1932
PRECIP 2.23 INS IN 2013
SNOWFALL 16.0 INS IN 1898
PEAK GUST 68 NW IN 1997

TODAY’S REPORT PREPARED BY: Matt Douglas