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

TUESDAY, DECEMBER 1, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

VERY WARM OVERNIGHT INTO THIS MORNING, COOLING AND
TURNING DRIER THIS AFTERNOON....

What a storm yesterday afternoon into the overnight. 
Strong winds and heavy rain were the theme along with
very warm temperatures (for this time of year).

Temperatures overnight rose to 62 degrees by midnight,
and held there for a few hours before slowly dropping 
back into the upper 50s early this morning. The 
temperature and dew point have started to fall off 
markedly early this afternoon as cold air advection,
on a south-southwest wind, has begun. An odd wind
direction for cold air advection, but is common with
a strong storm system moving northward off to our west.

After a period of rather light winds this morning, they
have increased this afternoon with gusts surpassing
40 MPH!

Rainfall from the storm totaled 1.96 inches, which 
should have really put a dent in the drought conditions.

The big story of course was the strong wind gusts from
yesterday. We recorded an official peak gust of 81 MPH
from the SSE at 4:38 P.M.

This gust represents the highest gust officially recorded
since 85 MPH on January 18, 2006. Yesterday's high wind
event also represents the 4th time this year we've had a
peak gust of 70 MPH or higher. The last time this happened
was back in 2002!

The 81 MPH gust is the 8th highest wind gust recorded for
the month of November dating back to 1940. Here is a list
of the current rankings...

BHO Highest November Wind Gusts, mph (1940-2020)

1) 96 mph, SSE on 3 Nov 1951
2) 94 mph, E on 25 Nov 1950
3) 90 mph, SSW on 28 Nov 1958
   90 mph, SSW on 30 Nov 1963
5) 86 mph, SSE on 29 Nov 1963
6) 83 mph, S on 10 Nov 1942
7) 83 mph, SW on 29 Nov 1960
8) 81 mph, SSE on 30 Nov 2020

Statistics above provided by our Chief Scientist, Mike Iacono.

The high so far today is 62F, 18 degrees above the daily
normal high of 44F. The low since midnight is 58F, 29 degrees
above the normal low of 29F.  


Today's Observations:

7 A.M.
Weather: Broken stratus fractus, broken altocumulus, broken 
cirrostratus/cirrocumulus
Temperature: 59F; Dew Point: 57F; Relative Humidity: 93%
Wind: S at 14G21 kts
Sea-level pressure: 29.56 in Hg; falling, then rising
Visibility: 10 miles, thin fog
6-hr Max temp: 62F
6-hr Min temp: 59F
24-hr Precip: 1.96 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E10 BKN 100 BKN 200 BKN 10 010/59/57/1814G21/956/ 
THN F ALQDS VIRGA WSW-NW/ 8/659 53003 6013/ 70196 10062 20059

10 A.M.
Weather: Broken stratocumulus, broken altocumulus, overcast cirrostatus, 
breaks in overcast all quadrants
Temperature: 59F; Dew Point: 56F; Relative Humidity: 89%
Wind: S at 12 kts
Sea-level pressure: 29.55 in Hg; steady, then falling
Visibility: 15 miles, thin fog
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 E30 BKN 100 BKN 200 OVC 15 006/59/56/1912/955/ FEW 
BINOVC ALQDS THN F ALQDS/ 8/557 58004

1 P.M.
Weather: Broken stratocumulus, broken altocumulus/lenticularus,
broken cirrostratus
Temperature: 59F; Dew Point: 52F; Relative Humidity: 77%
Wind: S at 18G28 kts, peak wind 35 MPH S at 12:28 P.M.
Sea-level pressure: 29.49 in Hg; falling, then steady
Visibility: 50 miles, hazy
6-hr Max temp: 60F
6-hr Min temp: 58F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E35 BKN 120 BKN 200 BKN 50 986/59/52/1818G28/949/ 
HAZY PK WND 1730/28/ 8/548 56020 10060 20058


SUMMARY FOR MONDAY, NOVEMBER 30, 2020 

TEMPERATURE (DEGREES F)
MAX.......62   NORMAL.....45 
MIN.......40   NORMAL.....29
MEAN......51   NORMAL.....37

DEPARTURE FROM 30-YEAR NORMAL................... +14
TOTAL DEPARTURE FOR THE MONTH...................+168 [+5.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............14  DEPARTURE......-14
TOTAL HEATING UNITS FOR THE MONTH..............521  DEPARTURE.....-177
TOTAL HEATING UNITS FOR THE SEASON.............973  DEPARTURE.....-288
TOTAL HEATING UNITS LAST SEASON TO DATE.......1237  DEPARTURE.....-264

PEAK WIND GUST FOR YESTERDAY (MPH):
                     420C/Official..............81 SSE  AT   4:38 P.M.
                     AEROVANE (south tower).....82 SSE  AT   4:38 P.M.
                     ASOS.......................N/A
                     DAVIS #1...................83 SSE  AT   4:40 P.M.
                     DAVIS #2 (south tower).....87 SSE  AT   5:09 P.M.
                     RMY........................86      
                     VECTOR.....................85     
                     MERLIN.....................77

FASTEST MILE FOR YESTERDAY:
CONTACTING/OFFICIAL.............................55 SSE  AT   5:10 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...................N/A
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............52 SSE  AT   4:40 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............57 SSE  AT   3:24 P.M.

AVERAGE WIND SPEED AND DIRECTION:
                     CONTACTING/OFFICIAL......24.3 SSE  [582 total miles]
                     ASOS.....................N/A       [000 total miles]
                     DAVIS #1.................23.4 SSE  [562 total miles]
                     DAVIS #2.................24.9 SSE  [598 total miles]
                     RMY......................23.0      [552 total miles]
                     VECTOR...................23.5      [564 total miles]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......1.96  DEPARTURE....+1.80
                             ASOS.............2.06
TOTAL PRECIPITATION FOR THE MONTH.............5.23  DEPARTURE....+0.59
                             ASOS.............5.38
TOTAL PRECIPITATION FOR THE YEAR.............47.01  DEPARTURE....-1.56
                              ASOS...........47.98

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M...........0.0  DEPARTURE.....-0.2
TOTAL SNOWFALL FOR THE MONTH...................0.0  DEPARTURE.....-0.2
TOTAL SNOWFALL FOR THE SEASON..................6.5  DEPARTURE.....+3.7


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/-1/0.01/0.0/.../..      23 SSE   AERO 23 SSE  RMY 26
11/26   58/45/52/+14/0.36/0.0/.../..     36 S     AERO 37 S    RMY 41
11/27   53/46/50/+12/0.00/0.0/.../..     23 WNW   AERO 23 WNW  RMY 23
11/28   52/36/44/+6/T/0.0/.../..         28 WNW   AERO 30 WNW  RMY 27
11/29   52/33/43/+6/0.00/0.0/.../..      21 SSW   AERO 21 SSW  RMY 22
11/30   62/40/51/+14/1.35/0.0/.../..     81 SSE   AERO 82 SSE  RMY 86

12/1 The low since midnight is 58F, 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 DECEMBER 1
HIGH 70 IN 2001
LOW 3 IN 1887
PRECIP 1.46 INS. IN 1917
SNOW 5.7 INS. IN 2019
PEAK GUST 72 MPH NW IN 1964

RECORDS FOR DECEMBER 2
HIGH 61 IN 1998
LOW 3 IN 1890
PRECIP 2.09 INS. IN 1974
SNOWFALL 5.0 INS. IN 1894, 1929
PEAK GUST 89e MPH SSE IN 1942

TODAY'S REPORT PREPARED BY: Matt Douglas