Monday, November 18, 2019

| November 18, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, NOVEMBER 18, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

COLD, RAW, AND WET DAY TODAY AT THE OBSERVATORY…

Overcast with drizzle and fog were the theme this morning,
has now picked up to a steady light rain early this afternoon.
Temperatures have been stuck in the low to mid 30s with our
range in temp so far today of 36 and 32. Couple this with a
gusty north wind and it makes it pretty miserable out there
today.

The high so far today is 36F back at midnight, which is 16
13 degrees below the daily normal maximum of 49F. The low
since midnight is 32F, which is 1 degree below the normal
minimum of 33F.

Today’s Observations:

7 A.M.
Weather: Vertical visibility 200 feet, sky obscured, light drizzle
Temperature: 33F; Dew Point: 33F; Wind: N at 14, gusting to 18 kts,
Sea-level pressure: 29.93 ins. Hg, falling, then more slowly
Visibility: 1/16 miles, fog
6-hr Max temp: 33F
6-hr Min temp: 32F
24-hr Precip:  0.07 ins.
24-hr Snowfall: Trace.
BHO SA 1155 W2 X 1/16L-F 136/33/33/3614G18/993/ 8//// 56019
6/// 70007 10033 20032

10 A.M.
Weather: Vertical visibility 300 feet, sky obscured, light drizzle
Temperature: 33F; Dew Point: 33F; Wind: N at 14, gusting to 22 kts,
Sea-level pressure: 29.86 ins. Hg, falling, then more rapidly
Visibility: 1.5 miles, fog
3-hr Precip: 0.04 ins.
BHO SA 1455 W3 X 11/2L-F 112/33/33/3614G22/986/ 8//// 58024 6004

1 P.M.
Weather: Vertical visibility 200 feet, sky obscured, light rain
Temperature: 35F; Dew Point: 35F; Wind: N at 15, gusting to 20 kts
Sea-level pressure: 29.75 ins. Hg, falling, then more slowly
Visibility: 1/4 miles, fog
6-hr Max temp: 35F
6-hr Min temp: 32F
6-hr Precip: 0.13 ins.
BHO SA 1755 W2 X 1/4R-F 076/35/35/3615G20/975/ 8//// 56036 6013 10035 20032

SUMMARY FOR SUNDAY, NOVEMBER 17, 2019

TEMPERATURE (DEGREES F)
MAX…..40   NORMAL…..50
MIN…..21   NORMAL…..33
MEAN….31   NORMAL…..41

DEPARTURE FROM 30-YEAR NORMAL……………….-10
TOTAL DEPARTURE FOR THE MONTH……………….-82 [-5.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………34  DEPARTURE……..+10
TOTAL HEATING UNITS FOR THE MONTH…………..455  DEPARTURE……..+96
TOTAL HEATING UNITS FOR THE SEASON………….895  DEPARTURE……..-17
TOTAL HEATING UNITS LAST SEASON TO DATE……..907  DEPARTURE……..-12

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..28 ENE AT 11:23 P.M.
AERO…………………….27 ENE AT  8:08 P.M
ASOS…………………….30 ENE AT  8:54 P.M.
DAVIS……………………29 ENE AT  7:31 P.M. RMY 29
FASTEST MILE FOR YESTERDAY………………….22 ENE AT  8:44 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….21 ENE AT  8:44 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………22 ENE AT  8:07 P.M.
AVERAGE WIND SPEED AND DIRECTION……………11.2 N
ASOS……………………11.5
DAVIS…………………..11.9 NE [030 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.07  DEPARTURE……-0.09
ASOS…………..0.06
TOTAL PRECIPITATION FOR THE MONTH……….0.87  DEPARTURE……-1.80
ASOS…………..0.90
TOTAL PRECIPITATION FOR THE YEAR……….46.21  DEPARTURE……-0.24
ASOS………….46.37

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..TRACE  DEPARTURE…….-0.1
TOTAL SNOWFALL FOR THE MONTH…………….0.1  DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE SEASON……………0.1  DEPARTURE…….-0.9

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/…/..            67 S   AERO M  M   RMY N/A
11/02  50/31/41/-5/0.00/0.0/…/..            17 WNW AERO 14 W   RMY N/A
11/03  53/35/44/-2/0.00/0.0/…/..            25 WSW AERO 23 W   RMY 26
11/04  53/33/43/-2/0.00/0.0/…/..            24 S   AERO 20 S   RMY 24
11/05  54/44/49/+4/0.33/0.0/…/..            22 S   AERO 18 WNW RMY 28
11/06  51/36/44/-1/0.00/0.0/…/..            28 WSW AERO 23 W   RMY 27
11/07  55/38/47/+2/0.27/0.0/…/..            30 S   AERO 26 SSW RMY 32
11/08  38/23/31/-13/0.00/0.0/…/..           38 NW  AERO 37 WNW RMY 44
11/09  39/20/30/-14/0.00/0.0/…/..           22 S   AERO 18 S   RMY N/A
11/10  51/30/41/-3/0.00/0.0/…/..            30 SW  AERO 30 SW  RMY 31
11/11  52/39/46/+3/T/0.0/…/..               23 NE  AERO 22 NE  RMY 23
11/12  42/20/31/-12/0.08/0.1/…/..           37 WNW AERO 37 WNW RMY 41
11/13  28/15/22/-21/0.00/0.0/…/..           32 WNW AERO 32 WNW RMY 35
11/14  36/17/28/-14/0.00/0.0/…/..           18 SW  AERO 17 SW  RMY 20
11/15  51/32/42/0/0.00/0.0/…/..             25 WNW AERO 25 WNW RMY N/A
11/16  35/22/29/-13/0.00/0.0/…/..           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 The low since midnight is 32F, daily normal minimum is 33F

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 18
HIGH 72 IN 1963
LOW 10 IN 1936
PRECIP 1.80 INS IN 1929
SNOWFALL 6.3 INS IN 1980
PEAK GUST 60 SW IN 1987

RECORDS FOR NOVEMBER 19
HIGH 72 IN 1941
LOW 10 IN 1936
PRECIP 1.92 INCHES IN 1926
SNOWFALL 11.0 INS IN 1986
PEAK GUST 59e E IN 1945

TODAY’S REPORT PREPARED BY: Matt Douglas

Category: Daily Discussions

Leave a Reply