Sunday, November 24, 2024

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

SUNDAY, NOVEMBER 24, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0646E
SUNSET:  1615E

A MIX OF SUN AND CLOUDS; COOL WITH A BRISK WEST-NORTHWEST WIND….

The storm system that slowly passed through the region from late
Wednesday evening into early yesterday evening brought with it very
welcomed and much needed rainfall. 2.53″ was the storm total for the
event, which is 97% of the total rainfall for the month to date!
Despite the good soaking of the past few days, we are still running
below normal for both the month and year, so we could definitely use
some more precipitation.

Today is featuring a mix of sun and clouds with drier air moving into
the area.

Temperatures bottomed out in the upper 30s overnight, but has been slow
to rise today thanks to strong cold air advection taking place. A
combination of downsloping and sunshine is trying to fight off the
colder air, and thus we’re seeing only a slow rise in readings today,
only reaching the mid to upper 40s by early this afternoon. The dew
point has been gradually slipping from the upper 20s into the mid 20s,
so there is definitely a chilly feel to the air.

Winds started ramping up yesterday afternoon and remained busy through
the night. They have become even busier today. The cold air advection
is creating very gusty conditions, especially once the sun started
heating the atmosphere and increased mixing started to take place.
The average speed for the day so far is around 19mph with frequent
gusts exceeding 30mph. The peak gust for the day so far is 42mph, which
occurred at 10:17am and 11:47am this morning.

Visibility has been excellent today, starting the day at around 60
miles. It improved to around 80 miles by mid morning and continues to
be at around that value into early this afternoon.

The maximum temperature for today is 47F degrees, which is equal to
the normal high of 47F. The minimum temperature since midnight is
38F degrees, which is 7 degrees above the normal low of 31F.

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus all quadrants, few altocumulus
distant NNE-ENE and distant SE-SW
Temperature: 40F; Dew Point: 28F; Relative Humidity: 62%
Wind: W @ 17G26 kts, peak wind W 30mph at 6:49 A.M.
Sea-level pressure: 1004.4 mb; 29.66 in. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 41F
6-hr Min temp: 38F
24-hr Precip:  0.19 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 60 044/40/28/2817G26/966/ FEW SC ALQDS FEW AC DSNT
NNE-ENE AND DSNT SE-SW PK WND 2826/49/ 8/550 51031 70019 10041 20038

10 A.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 44F; Dew Point: 27F; Relative Humidity: 50%
Wind: WNW @ 17G28 kts, peak wind W 40mph at 9:34 A.M.
Sea-level pressure: 1006.2 mb; 29.71 in. Hg: rising unsteadily
Visibility: 70 miles
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E45 BKN 250 BKN 80 062/44/27/2917G28/971/ PK WND 2835/34/
8/501 52018

1 P.M.
Weather: Scattered stratocumulus, scattered cirrus
Temperature: 47F; Dew Point: 26F; Relative Humidity: 45%
Wind: WNW @ 19G30 kts, peak wind WNW 40mph at 12:19 P.M.
Sea-level pressure: 1005.7 mb; 29.70 in. Hg: falling, then steady
Visibility: 80 miles
6-hr Max temp: 47F
6-hr Min temp: 40F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 50 SCT 250 SCT 80 057/47/26/2919G30/970/ PK WND 2935/19/
8/501 56005 10047 20040

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SUMMARY FOR SATURDAY, NOVEMBER 23, 2024

TEMPERATURE (DEGREES F)
MAX…….44  NORMAL…..47
MIN…….38  NORMAL…..32
MEAN……41  NORMAL…..39

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+2
TOTAL DEPARTURE FOR THE MONTH……………………+118 [+4.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………24  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH…………..391  DEPARTURE……-113
TOTAL HEATING UNITS FOR THE SEASON………….764  DEPARTURE……-252
TOTAL HEATING UNITS LAST SEASON TO DATE……..874  DEPARTURE……-110

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)………..46 NW   @   04:56 P.M.
VECTOR #1 (1-Sec)……….45 NW   @   04:25 P.M.
VECTOR #2 (1-Sec)……….46 NW   @   04:40 P.M.
DAVIS #1……………….45 WNW  @   04:25 P.M.
DAVIS #2 ………………42 NNW  @   04:30 P.M.
RMY #1 (Instantaneous)…..49 NW   @   04:56 P.M.
RMY #2 (Instantaneous)…..47 NW   @   04:40 P.M.
MERLIN…………………46 NW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………32 NW   @   05:15 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..30      @   05:14 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..31      @   05:14 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………31 NW   @   05:14 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 NW   @   05:14 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..30 NW   @   05:14 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 NW   @   05:14 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..15.5 S [373 total miles] VECTOR #1………………15.0
VECTOR #2………………15.9
DAVIS #1……………….15.5 NW
DAVIS #2……………….15.2 NW
RMY #1…………………14.6 NW
RMY #2…………………15.4 NW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.19 DEPARTURE…..+0.05
TOTAL PRECIPITATION FOR THE MONTH…………..2.61 DEPARTURE…..-0.64
TOTAL PRECIPITATION FOR THE YEAR (2024)…….46.41 DEPARTURE…..-1.00

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-1.0
TOTAL SNOWFALL FOR THE SEASON (2024-2025)…….0.0 DEPARTURE……-1.7

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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/+13/0.00/0.0/519/86       37 WNW VEC1 35 WNW RMY 42
11/8   63/41/52/+7/0.00/0.0/572/95        42 WNW VEC1 42 WNW RMY 47
11/9   50/36/43/-1/0.00/0.0/599/100       40 NW  VEC1 42 NW  RMY 43
11/10  60/32/46/+2/T/0.0/388/65           29 WSW VEC1 29 SW  RMY 31
11/11  66/50/58/+15/0.08/0.0/457/77       40 SW  VEC1 42 SW  RMY 43
11/12  54/33/44/+1/0.00/0.0/545/92        48 NNW VEC1 50 NNW RMY 56
11/13  43/28/36/-7/0.00/0.0/584/99        32 N   VEC1 33 N   RMY 31
11/14  42/27/35/-7/0.00/0.0/542/92        22 NE  VEC1 22 NE  RMY 22
11/15  58/27/43/+1/0.00/0.0/580/99        28 NW  VEC1 28 NW  RMY 30
11/16  60/38/49/+7/0.00/0.0/572/98        33 NNW VEC1 35 NNW RMY 35
11/17  62/40/51/+10/0.00/0.0/553/95       26 NW  VEC1 26 NW  RMY 26
11/18  61/43/52/+11/T/0.0/418/72          29 NW  VEC1 28 NW  RMY 31
11/19  56/39/48/+7/0.00/0.0/565/98        29 NW  VEC1 29 NW  RMY 30
11/20  52/36/44/+4/T/0.0/564/98           21 E   VEC1 21 E   RMY 21
11/21  44/43/44/+4/1.27/0.0/000/00        51 ENE VEC1 50 ENE RMY 52
11/22  52/40/46/+6/0.55/0.0/…/..        44 E   VEC1 47 E   RMY 45
11/23  44/38/41/+2/0.71/0.0/…/..        46 NW  VEC1 45 NW  RMY 49

11/24 The low since midnight is 38F, the daily normal low is 31F.

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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 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 4.0 INS IN 1938
PEAK GUST 94e E IN 1950

TODAY’S REPORT PREPARED BY: Matt Douglas