Wednesday, November 15, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, NOVEMBER 15, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0635E
SUNSET: 1622E
ANOTHER COOL, CALM FALL DAY…
Clear skies this morning have given way to a broken cirrus
layer this afternoon. Aside from a light breeze and slightly
below normal temperatures, nothing particularly exciting has
occurred on the hill weather-wise today.
Temperatures began this morning in the low 30s, and have since
climbed into the upper 40s by early afternoon. The dew point
has remained nearly steady around 30F.
Winds have been light all day today, with an average speed of
only 7mph. The breeze has picked up a touch by the 1pm observation.
The peak gust so far occurred just after noon time, with a speed of
18mph. In terms of direction, winds began the morning out of the
north-northwest and have since backed to the southwest.
Visibility today is considerably improved over yesterday, remaining
nearly constant with a view of 60 miles to Mount Monadnock.
The maximum temperature so far today is 48F, which is 2 degrees
below the normal high of 50F. The minimum temperature since
midnight is 30F, which is 4 degrees below the normal low of 34F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus offshore distant NE-SE,
few altocumulus distant WNW-NW, few cirrus all quadrants
Temperature: 31F; Dew Point: 29F; Relative Humidity: 91%
Wind: WNW @ 5 kts, wind light
Sea-level pressure: 1030.7 mb; 30.44 in. Hg: rising, then more slowly
Visibility: 60 miles, thin smoke layer along horizon
6-hr Max temp: 33F
6-hr Min temp: 30F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
BHO SA 1155 CLR 60 307/31/29/3005/044/ FEW SC OFFSHR DSNT NE-SE
FEW AC DSNT WNW-NW FEW CI ALQDS THN K LYR ALNG HRZ ALQDS WND LGT/
8/551 51011 10033 20030
10 A.M.
Weather: Thin broken cirrus, few stratocumulus offshore distant NE-S
Temperature: 40F; Dew Point: 31F; Relative Humidity: 69%
Wind: WSW @ 3 kts, wind light
Sea-level pressure: 1031.2 mb; 30.45 in. Hg: rising, then falling
Visibility: 60 miles, thin smoke layer distant N-NNE
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 -BKN 60 312/40/31/2403/045/ FEW SC OFFSHR DSNT NE-S
THN K LYR DSNT N-NNE WND LGT/ 8/501 50005
1 P.M.
Weather: Thin broken cirrus, few stratocumulus offshore distant NE-ESE
Temperature: 48F; Dew Point: 30F; Relative Humidity: 49%
Wind: WSW @ 8 kts
Sea-level pressure: 1028.6 mb; 30.37 in. Hg: falling steadily
Visibility: 60 miles
6-hr Max temp: 48F
6-hr Min temp: 31F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 E250 -BKN 60 286/48/30/2508/037/ FEW SC OFFSHR DSNT NE-ESE/
8/501 57026 10048 20031
————————————————————–
SUMMARY FOR TUESDAY, NOVEMBER 14, 2023
TEMPERATURE (DEGREES F)
MAX…….47 NORMAL…..51
MIN…….31 NORMAL…..34
MEAN……39 NORMAL…..42
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-3
TOTAL DEPARTURE FOR THE MONTH…………………-32 [-2.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………26 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..316 DEPARTURE…….+30
TOTAL HEATING UNITS FOR THE SEASON………….666 DEPARTURE……-131
TOTAL HEATING UNITS LAST SEASON TO DATE……..556 DEPARTURE……+110
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E29 NW @ 04:27 P.M.
VECTOR #1 (1-Sec)……….29 NW @ 04:27 P.M.
VECTOR #2 (1-Sec)……….32 NNW @ 04:28 P.M.
DAVIS #1……………….27 NW @ 04:26 P.M.
DAVIS #2 ………………28 NNW @ 04:28 P.M.
RMY #1 (Instantaneous)…..29 NW @ 04:27 P.M.
RMY #2 (Instantaneous)…..32 NNW @ 04:28 P.M.
MERLIN…………………27 NW
RICHARDS (C5C) (Inst)……27 @ 04:28 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 NW @ 04:28 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 @ 04:28 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 04:28 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 NW @ 04:28 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 NNW @ 04:29 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 NW @ 04:28 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 NNW @ 04:28 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 @ 04:28 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.0 NNW [169 total miles]
VECTOR #1……………..7.7
VECTOR #2……………..7.8
DAVIS #1………………7.5 NNW
DAVIS #2………………7.3 N
RMY #1………………..7.5 NNW
RMY #2………………..7.6 NNW
RICHARDS (C5C)…………8.1
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.17 DEPARTURE…..-1.86
TOTAL PRECIPITATION FOR THE YEAR…………..49.36 DEPARTURE…..+3.17
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-1.2
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
11/1 42/31/37/-10/0.01/T/056/09 23 ENE VEC1 21 ENE RMY 23
11/2 45/28/37/-10/0.00/0.0/618/100 23 NNW VEC1 23 NNW RMY 22
11/3 55/36/46/0/0.00/0.0/541/88 32 SW VEC1 33 SSW RMY 33
11/4 59/44/52/+6/0.00/0.0/049/08 32 SW VEC1 31 SW RMY 32
11/5 61/42/52/+6/0.00/0.0/360/59 24 NNW VEC1 27 NNW RMY 27
11/6 50/40/45/+/0.00/0.0/067/11 28 S VEC1 27 S RMY 25
11/7 65/46/56/+11/0.05/0.0/272/45 38 WNW VEC1 37 WNW RMY 37
11/8 48/33/41/-4/0.00/0.0/440/73 36 NNW VEC1 38 NNW RMY 39
11/9 42/32/37/+7/0.11/T/000/00 20 WNW VEC1 20 WNW RMY 20
11/10 49/38/44/0/0.00/0.0/…/.. 23 W VEC1 23 W RMY 22
11/11 49/30/40/-3/0.00/0.0/…/.. 29 NW VEC1 26 NW RMY 30
11/12 41/27/34/-9/0.00/0.0/…/.. 20 N VEC1 19 N RMY 19
11/13 44/24/34/-9/T/T/…/… 20 NNW VEC1 20 N RMY 19
11/14 47/31/39/-3/0.00/0.0/…/.. 29 NW VEC1 29 NW RMY 29
11/15 The low since midnight is 30F, the daily normal low is 34F
————————————————————–
NOVEMBER DAILY RECORDS TO DATE
11/1 TIED RECORD FOR SNOWFALL WITH A TRACE, TIED WITH 1906, 1951
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR NOVEMBER 15
HIGH 74 IN 1993
LOW 15 IN 1933
PRECIP 1.66 INCHES IN 1981
SNOWFALL 6.5 IN 2018
PEAK GUST 65 SSE IN 2008
RECORDS FOR NOVEMBER 16
HIGH 73 IN 1927
LOW 8 IN 1933
PRECIP 2.25 INCHES IN 1981
SNOWFALL 2.0 IN 1913
PEAK GUST 78 S IN 1989
TODAY’S REPORT PREPARED BY: Joshua Polen/Matt Douglas
