Sunday, November 24, 2019

| November 24, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 24, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

GRADUALLY INTENSIFYING RAINFALL WITH STRONG
EASTERLY WINDS….

Today featured fog, rain, and strong winds out of the
east. Visibility was limited to 1/16th mile due to
fog and rain, while wind increased to a peak of 45 mph
following noontime. Pressure is notably low, dropping
more than 17 millibars since this morning. The station
pressure at early afternoon is around 963 millibars,
with a sea-level pressure of 985.1 mb (29.09 inches)
at 1 PM and still dropping.

Rain this morning left 0.11 inches in the gauge before
7 AM, with another 0.79 inches falling before the 1 P.M.
observation.

The high so far today is 44F, which is 3 degrees below
the daily normal maximum of 47F. The low since midnight
is 35F, which is 4 degrees above the normal minimum of 31F.

Today’s Observations:

7 A.M.
Weather: Sky obscured in light rain and fog
Temperature: 37F; Dew Point: 37F; Wind: NE at 13G20 kts
Sea-level pressure: 29.54 ins. Hg, falling rapidly
Visibility: 1/16 miles, fog
6-hr Max temp: 37F
6-hr Min temp: 35F
24-hr Precip:  0.11 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 X W3 1/16R-F 002/37/37/0513G20/954/ R-CTD/
8//// 56044 10037 20035

10 A.M.
Weather: Sky obscured in light rain and fog
Temperature: 43F; Dew Point: 43F; Wind: ENE at 19G28 kts,
Peak wind: 33 MPH (29 kts) ENE at 9:32 A.M.
Sea-level pressure: 29.42 ins. Hg, falling rapidly
Visibility: 1/16 miles, fog
3-hr Precip: 0.25 ins.
BHO SA 1455 X W3 1/16R-F 962/43/43/0719G28/942/ R-CTD
PK WND 0729/32/ 8//// 6025/ 58040

1 P.M.
Weather: Sky obscured in moderate rain and fog
Temperature: 43F; Dew Point: 43F; Wind: NE at 25G38 kts,
Peak wind: 44 MPH (38 kts) NE at 12:52 P.M.
Sea-level pressure: 29.09 ins. Hg, falling very rapidly
Visibility: 1/16 miles, fog
6-hr Max temp: 44F
6-hr Min temp: 37F
3-hr Precip: 0.79 ins.
BHO SA 1755 X W3 1/16RF 851/43/43/0425G38/909/ RCTD
PRESFR PK WND 0438/52/ 8//// 6079/ 58091 10044 20037

SUMMARY FOR SATURDAY, NOVEMBER 23, 2019

TEMPERATURE (DEGREES F)
MAX…..44   NORMAL…..47
MIN…..27   NORMAL…..31
MEAN….36   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL………………. -3
TOTAL DEPARTURE FOR THE MONTH……………….-98 [-4.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………29  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..620  DEPARTURE……+112
TOTAL HEATING UNITS FOR THE SEASON…………1060  DEPARTURE…….-11
TOTAL HEATING UNITS LAST SEASON TO DATE…….1126  DEPARTURE…….-66

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..29 WNW AT 12:14 A.M.
AERO…………………….29 WNW AT 12:15 A.M
ASOS…………………….30 W   AT 12:16 A.M.
DAVIS……………………32 W   AT 12:23 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….23 WNW AT 12:27 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….22 WNW AT 12:16 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………23 WNW AT 12:16 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.2 W
ASOS…………………..11.3
DAVIS………………….11.7 W [262 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.11  DEPARTURE……-0.05
ASOS…………..0.11
TOTAL PRECIPITATION FOR THE MONTH……….1.94  DEPARTURE……-1.69
ASOS…………..2.01
TOTAL PRECIPITATION FOR THE YEAR……….47.28  DEPARTURE……-0.13
ASOS………….47.48

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…….-1.1
TOTAL SNOWFALL FOR THE SEASON……………0.1  DEPARTURE…….-1.4

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 The low since midnight is 35F, daily normal minimum is 31F

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 24
HIGH 69 IN 1931
LOW 7 IN 1897
PRECIP 1.76 INCHES IN 1901
SNOWFALL 4.5 INS IN 1936
PEAK GUST 69 SSW IN 1959

RECORDS FOR NOVEMBER 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 8.0 INS IN 1888
PEAK GUST 94e E IN 1950

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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