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Sunday, November 29, 2020

November 30, 2020

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, NOVEMBER 29, 2020 ALL TIMES ARE…

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

SUNDAY, NOVEMBER 29, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

CLEAR WITH WESTERLY WINDS AND GOOD VISIBILITY….

We observed good conditions in general, with only a few
distant clouds being seen at the 7 A.M. observation.
Visibility was 70 miles on average, although a thin smoke
layer made it a little less in the morning hours. Wind was
westerly at 10 mph, with a max gust not exceeding 20 mph.
Pressure is steady for the most part, and humidity has
dropped to 40% by 1 P.M.

The high so far today is 50F, 5 degrees above the daily normal
high of 45F. The low since midnight is 33F, 4 degrees above the
normal low of 29F.

Today’s Observations:

7 A.M.
Weather: Clear, few cirrostratus NW-NE
Temperature: 33F; Dew Point: 27F; Relative Humidity: 78%
Wind: W at 10 kts
Sea-level pressure: 29.93 in Hg; steady, then rising
Visibility: 60 miles, thin smoke layer
6-hr Max temp: 35F
6-hr Min temp: 33F
24-hr Precip: 0.00 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 60 194/33/27/2610/010/ FEW CS NW-NE THN
K LYR ALQDS/ 8/005 51016 10035 20033

10 A.M.
Weather: Clear
Temperature: 42F; Dew Point: 26F; Relative Humidity: 52%
Wind: W at 8 kts
Sea-level pressure: 30.13 in Hg; rising unsteadily
Visibility: 65 miles
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 CLR 65 204/42/26/2708/013/ THN K LYR ALQDS
52010

1 P.M.
Weather: Clear
Temperature: 50F; Dew Point: 27F; Relative Humidity: 40%
Wind: W at 8 kts
Sea-level pressure: 30.10 in Hg; falling, then falling more slowly
Visibility: 70 miles
6-hr Max temp: 50F
6-hr Min temp: 33F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 CLR 70 194/50/27/2608/010/ 58010 10050 20033

SUMMARY FOR SATURDAY, NOVEMBER 28, 2020

TEMPERATURE (DEGREES F)
MAX…….52   NORMAL…..45
MIN…….36   NORMAL…..30
MEAN……44   NORMAL…..38

DEPARTURE FROM 30-YEAR NORMAL………………..+6
TOTAL DEPARTURE FOR THE MONTH……………….+148 [+5.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………21  DEPARTURE……-6
TOTAL HEATING UNITS FOR THE MONTH…………..485  DEPARTURE…..-157
TOTAL HEATING UNITS FOR THE SEASON………….937  DEPARTURE…..-268
TOTAL HEATING UNITS LAST SEASON TO DATE…….1169  DEPARTURE…..-232

PEAK WIND GUST FOR YESTERDAY (MPH):
420C/Official…………..28 WNW  AT   5:58 P.M.
AEROVANE (south tower)…..30 WNW  AT   5:58 P.M.
ASOS…………………..26 W    AT   3:58 P.M.
DAVIS #1……………….27 WNW  AT   3:38 P.M.
DAVIS #2 (south tower)…..30 WNW  AT   3:56 P.M.
RMY……………………27
VECTOR…………………29
MERLIN…………………29

FASTEST MILE FOR YESTERDAY:
CONTACTING/OFFICIAL………………………..18 WNW  AT   3:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….18 W    AT   3:58 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 W    AT   3:55 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 W    AT   3:58 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…… 8.9 WNW  [214 total miles] ASOS………………… 9.9      [234 total miles] DAVIS #1…………….. 9.5 WNW  [226 total miles] DAVIS #2…………….. 9.7 WNW  [233 total miles] RMY…………………. 8.6 WNW  [206 total miles] VECTOR………………. 9.2      [213 total miles]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00  DEPARTURE….-0.17
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….3.88  DEPARTURE….-0.56
ASOS………….3.97
TOTAL PRECIPITATION FOR THE YEAR………….45.05  DEPARTURE….-3.16
ASOS………..45.92

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…..-2.0
TOTAL SNOWFALL FOR THE SEASON………………6.5  DEPARTURE…..+4.2

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   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   58/45/52/+14/…/0.0/…/..      36 S     AERO 37 S    RMY 41
11/27   53/46/50/+12/…./…/…/..     23 WNW   AERO 23 WNW  RMY 23
11/28   52/36/44/+6/0.00/0.0/…/..      28 WNW   AERO 30 WNW  RMY 27

11/29 The low since midnight is 33F, the daily normal low is 29F

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 29
HIGH 66 IN 2011
LOW 6 IN 1901
PRECIP 2.69 INCHES IN 1963
SNOWFALL 6.0 INS IN 2012
PEAK GUST 86 SSE IN 1963

RECORDS FOR NOVEMBER 30
HIGH 67 IN 2006
LOW 7 IN 1887, 1929
PRECIP 2.42 INCHES IN 1944
SNOWFALL 10.2 INS IN 1945
PEAK GUST 90 SSW IN 1963

TODAY’S REPORT PREPARED BY: Benjamin Turner

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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