Tuesday, November 26, 2019

| November 27, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, NOVEMBER 26, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

VERY MILD WITH LIMITED MORNING VISIBILITY….

We observed partly cloudy skies, and a visibility of
10 miles this morning due to abnormally hazy conditions.
Visibility was 65 miles at most, increasing in rapid
fashion after noontime. Wind has been southwesterly,
increasing to 15 mph on average by the 1 P.M. observation.
The max gust so far today is 29 mph.

Warm air advection and abundant sunshine can be credited
for above average temperatures today. The high so far is
58F, which is 12 degrees above the daily normal maximum of
46F. The low since midnight is 39F, which is 9 degrees
above the normal minimum of 30F.

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken cirrus
Temperature: 39F; Dew Point: 36F; Wind: SSW at 8 kts
Sea-level pressure: 29.98 ins. Hg, rising steadily
Visibility: 10 miles, haze
6-hr Max temp: 42F
6-hr Min temp: 39F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 180 SCT E250 BKN 10 153/39/36/2108/998/
HAZY/ 8/061 51008 10042 20039

10 A.M.
Weather: Scattered cirrus
Temperature: 50F; Dew Point: 38F; Wind: SSW at 10 kts
Sea-level pressure: 30.01 ins. Hg, rising steadily
Visibility: 10 miles, haze
3-hr Precip: 0.00 ins.
BHO SA 1455 250 SCT 10 163/50/38/2010/001/ HAZY/
8/002 53010

1 P.M.
Weather: Broken cirrostratus
Temperature: 58F; Dew Point: 36F; Wind: SW at 15G22 kts
Sea-level pressure: 29.97 ins. Hg, falling steadily
Visibility: 65 miles
6-hr Max temp: 58F
6-hr Min temp: 39F
3-hr Precip: 0.00 ins.
BHO SA 1755 250 BKN 65 151/58/36/2215G22/997/ 8/007
58012 10058 20039

SUMMARY FOR MONDAY, NOVEMBER 25, 2019

TEMPERATURE (DEGREES F)
MAX…..50   NORMAL…..47
MIN…..34   NORMAL…..31
MEAN….42   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL………………. +3
TOTAL DEPARTURE FOR THE MONTH……………….-108 [-4.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………23  DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE MONTH…………..668  DEPARTURE……+108
TOTAL HEATING UNITS FOR THE SEASON…………1108  DEPARTURE…….-16
TOTAL HEATING UNITS LAST SEASON TO DATE…….1180  DEPARTURE…….-72

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..32 WNW AT 12:18 A.M.
AERO…………………….35 WNW AT 12:08 A.M
ASOS…………………….34 WNW AT 12:19 A.M.
DAVIS……………………35 WNW AT 12:07 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….24 W   AT  5:15 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….22 W   AT  5:16 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………24 W   AT  2:22 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..12.6 W
ASOS…………………..12.6
DAVIS………………….12.8 W [269 deg.]

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……….3.43  DEPARTURE……-0.52
ASOS…………..3.59
TOTAL PRECIPITATION FOR THE YEAR……….48.77  DEPARTURE……+1.04
ASOS………….49.06

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.1
TOTAL SNOWFALL FOR THE MONTH…………….0.1  DEPARTURE…….-1.4
TOTAL SNOWFALL FOR THE SEASON……………0.1  DEPARTURE…….-1.7

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  67/35/51/+5/…./0.0/534/86            67 S   AERO M  M   RMY N/A
11/02  50/31/41/-5/0.00/0.0/612/99            17 WNW AERO 14 W   RMY N/A
11/03  53/35/44/-2/0.00/0.0/567/92            25 WSW AERO 23 W   RMY 26
11/04  53/33/43/-2/0.00/0.0/546/89            24 S   AERO 20 S   RMY 24
11/05  54/44/49/+4/0.33/0.0/000/00            22 S   AERO 18 WNW RMY 28
11/06  51/36/44/-1/0.00/0.0/596/98            28 WSW AERO 23 W   RMY 27
11/07  55/38/47/+2/0.27/0.0/000/00            30 S   AERO 26 SSW RMY 32
11/08  38/23/31/-13/0.00/0.0/555/92           38 NW  AERO 37 WNW RMY 44
11/09  39/20/30/-14/0.00/0.0/583/97           22 S   AERO 18 S   RMY N/A
11/10  51/30/41/-3/0.00/0.0/174/29            30 SW  AERO 30 SW  RMY 31
11/11  52/39/46/+3/T/0.0/000/00               23 NE  AERO 22 NE  RMY 23
11/12  42/20/31/-12/0.08/0.1/000/00           37 WNW AERO 37 WNW RMY 41
11/13  28/15/22/-21/0.00/0.0/592/100          32 WNW AERO 32 WNW RMY 35
11/14  36/17/28/-14/0.00/0.0/136/23           18 SW  AERO 17 SW  RMY 20
11/15  51/32/42/0/0.00/0.0/553/94             25 WNW AERO 25 WNW RMY N/A
11/16  35/22/29/-13/0.00/0.0/580/99           35 NNW AERO 35 NNW RMY N/A
11/17  40/21/31/-10/T/T/…/..                28 ENE AERO 27 ENE RMY 29
11/18  36/32/34/-7/…./0.0/…/..            28 NNE AERO 29 N   RMY 31
11/19  42/36/39/-2/…/0.0/…/..             12 SSW AERO  9 NNW RMY N/A
11/20  38/33/36/-4/…./T/…/..              20 NW  AERO 18 NW  RMY 21
11/21  46/30/38/-2/0.00/0.0/…/..            21 NW  AERO 21 NW  RMY N/A
11/22  52/32/42/+2/0.12/0.0/…/..            46 W   AERO 47 W   RMY 47
11/23  44/27/36/-3/0.00/0.0/…/..            29 WNW AERO 29 WNW RMY N/A
11/24  44/35/40/+1/1.49/0.0/…/..            45 N   AERO 44 NE  RMY 46 TSTM
11/25  50/34/42/+3/0.00/0.0/…/..            32 WNW AERO 35 WNW RMY 23

11/26 The low since midnight is 39F, daily normal minimum is 30F

DAILY RECORDS FOR NOVEMBER

11/13/19: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 28F,
BREAKS PREVIOUS RECORD OF 30F SET IN 1920.
It was also the third earliest maximum temperature
colder than 30F on record, behind only 28F on 11/8/1894
and 29F on 11/12/1894.

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: Benjamin Turner

Category: Daily Discussions

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