Wednesday, November 13, 2024

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

WEDNESDAY, NOVEMBER 13, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0633E
SUNSET:  1623E

CLEAR SKIES, CHILLY TEMPERATURES, AND PERFECT VISIBILITY TODAY….

Other than the chilly breeze today, it’s been quite a beautiful
day. Skies have been clear all day, except for some ocean effect
clouds that have been skirting the coast most of the day. However
the trend has been for less of these as surface temperatures warm
this afternoon from the very chilly values of early this morning.

We started the day with temperature readings in the upper 20s, and
have only recovered to the low to mid 40s early this afternoon. The
dew point has been generally a couple of degrees either side of 20F
most of the day, however it has dropped into the mid teens since
the 1pm observation. This is bringing relative humidity percentage
levels down into the low to mid 30s, which is not good news for fire
danger concerns.

It’s not as windy as yesterday, although it has been breezy at times,
especially during the morning hours. A north-northeast wind has been
averaging at around 11mph for the day so far. The peak gust for the
day to this point is 32mph, which occurred at 9:35am this morning.

Visibility has been a perfect 90 miles all day, giving us a
spectacular view today from the summit of Blue Hill today!

The maximum temperature for today since midnight is 43 degrees, this
is 8 degrees below the normal high of 51F. The minimum temperature
since midnight is 28F degrees, which is 7 degrees below the normal
low of 35F degrees.

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant NNE-SE-SSW
Temperature: 29F; Dew Point: 19F; Relative Humidity: 65%
Wind: N @ 11G16 kts
Sea-level pressure: 1031.8 mb; 30.47 in. Hg: rising, then more rapidly
Visibility: 90 miles
6-hr Max temp: 32F
6-hr Min temp: 28F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 90 318/29/19/3511G16/047/ FEW SC DSNT NNE-SE-SSW/
8/500 53032 10032 20028

10 A.M.
Weather: Clear, few stratocumulus distant NE-SE-SSW
Temperature: 37F; Dew Point: 22F; Relative Humidity: 52%
Wind: NNE @ 12G20 kts, peak wind N 32mph at 9:35 A.M.
Sea-level pressure: 1033.1 mb; 30.51 in. Hg: rising, then more slowly
Visibility: 90 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 90 331/37/22/0212G20/051/ FEW SC DSNT NE-SE-SSW
PK WND 0128/35/ 8/500 51013

1 P.M.
Weather: Clear, few stratocumulus distant ENE-SE-SSW
Temperature: 42F; Dew Point: 19F; Relative Humidity: 39%
Wind: NNE @ 9G19 kts
Sea-level pressure: 1031.7 mb; 30.47 in. Hg: rising, then falling
Visibility: 90 miles
6-hr Max temp: 42F
6-hr Min temp: 29F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 90 317/42/19/0309G19/047/ FEW SC DSNT ENE-SE-SSW/
8/500 58014 10042 20029

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SUMMARY FOR TUESDAY, NOVEMBER 12, 2024

TEMPERATURE (DEGREES F)
MAX…….54  NORMAL…..51
MIN…….33  NORMAL…..35
MEAN……44  NORMAL…..43

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH…………………….+80 [+6.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………21  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………..165  DEPARTURE…….-76
TOTAL HEATING UNITS FOR THE SEASON………….538  DEPARTURE……-214
TOTAL HEATING UNITS LAST SEASON TO DATE……..609  DEPARTURE…….-71

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….5  DEPARTURE……..+5
TOTAL COOLING UNITS FOR THE SEASON………….768  DEPARTURE…….+91
TOTAL COOLING UNITS LAST SEASON TO DATE……..715  DEPARTURE…….+53

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated

F420C (Official)………..48 NNW  @   12:42 P.M.
VECTOR #1 (1-Sec)……….50 NNW  @   12:41 P.M.
VECTOR #2 (1-Sec)……….52 NNW  @   02:58 P.M.
DAVIS #1……………….47 NNW  @   12:41 P.M.
DAVIS #2 ………………45 NNW  @   12:40 P.M.
RMY #1 (Instantaneous)…..56 NNW  @   12:41 P.M.
RMY #2 (Instantaneous)…..51 NW   @   03:03 P.M.
MERLIN…………………47 NNW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 NNW  @   04:35 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..34      @   12:42 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..33      @   12:41 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………34 NW   @   12:42 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………33 N    @   12:41 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..33 NNW  @   12:42 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 NNW  @   12:41 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..17.2 NNW [413 total miles] VECTOR #1………………16.5
VECTOR #2………………17.0
DAVIS #1……………….16.9 NW
DAVIS #2……………….16.9 NNW
RMY #1…………………15.9 NW
RMY #2…………………16.7 NW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.08 DEPARTURE…..-1.67
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.88 DEPARTURE…..-2.03

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE SEASON (2024-2025)…….0.0 DEPARTURE……-1.1

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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   77/49/63/+16/0.00/0.0/347/56       36 WNW VEC1 36 WNW RMY 37
11/2   55/37/46/-1/0.00/0.0/228/37        21 N   VEC1 23 N   RMY 21
11/3   48/30/39/-7/0.00/0.0/595/97        20 NNW VEC1 21 NNW RMY 21
11/4   49/33/41/-5/0.00/0.0/061/10        20 SSE VEC1 21 SSE RMY 21
11/5   73/46/60/+15/0.00/0.0/505/83       35 SW  VEC1 35 SW  RMY 37
11/6   80/59/70/+25/0.00/0.0/558/92       39 WSW VEC1 39 WSW RMY 42
11/7   69/47/58/+13/0.00/0.0/…/..       37 WNW VEC1 35 WNW RMY 42
11/8   63/41/52/+7/0.00/0.0/…/..        42 WNW VEC1 42 WNW RMY 47
11/9   50/36/43/-1/0.00/0.0/…/..        40 NW  VEC1 42 NW  RMY 43
11/10  60/32/46/+2/T/0.0/…/..           29 WSW VEC1 29 SW  RMY 31
11/11  66/50/58/+15/0.08/0.0/…/..       40 SW  VEC1 42 SW  RMY 43
11/12  54/33/44/+1/0.00/0.0/…/..        48 NNW VEC1 50 NNW RMY 56

11/13 The low since midnight is 28F, the daily normal low is 35F.

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NOVEMBER DAILY RECORDS TO DATE

11/1 RECORD HIGH TEMPERATURE OF 77F, OLD RECORD WAS 75F IN 2003.

11/6 RECORD HIGH TEMPERATURE OF 80F, OLD RECORD WAS 74F IN 2022.

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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982

RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997, 2014
PEAK GUST 63 W IN 2003

TODAY’S REPORT PREPARED BY: Matt Douglas