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Thursday, January 11, 2024

January 11, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, JANUARY 11, 2024 ALL TIMES ARE…

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

THURSDAY, JANUARY 11, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0712E
SUNSET:  1632E

BLUSTERY AND COOLER IN THE WAKE OF YESTERDAY’S STORM….

Clouds were the theme this morning with a blustery wind and
cool temperatures. More breaks in the cloud cover developed
as we approached the midday hour and into early this afternoon,
however, more cloud cover can be seen moving into the area at
the time of this discussion.

The temperature has been slow to rise today, in part due to the
cold air advection, but also due to the abundance of clouds
during the first half of the day. Readings have reached the low
40s early this afternoon, after starting the day in the mid 30s.

Winds have been busy today with an average speed of around 16mph.
There have been frequent gusts all day between 25-40mph. The
peak gust so far has been 44mph, which occurred just before
4:30am this morning.

Visibility has been very good today, improving from 50 miles
early this morning to around 60 miles by early this afternoon.

The maximum temperature so far today is 43F degrees, this is 8
degrees above the normal high of 35F. The minimum temperature
so far since midnight is 35F degrees, this is 16 degrees above
the normal low of 19F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant NNE-NE
and distant ESE-S
Temperature: 35F; Dew Point: 23F; Relative Humidity: 61%
Wind: W @ 15G25 kts, peak wind W 30mph at 6:16 A.M.
Sea-level pressure: 1007.7 mb; 29.76 in. Hg: rising steadily
Visibility: 50 miles
6-hr Max temp: 40F
6-hr Min temp: 35F
24-hr Precip: Trace
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E38 OVC 50 077/35/23/2815G25/976/ FEW BINOVC DSNT NNE-NE
AND DSNT ESE-S PK WND 2826/16/ 8/5// 52032 70000 10040 20035

10 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant SE-WSW
Temperature: 38F; Dew Point: 23F; Relative Humidity: 55%
Wind: WNW @ 16G26 kts, peak wind WNW 32mph at 9:23 A.M.
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: rising, then falling
Visibility: 60 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E38 OVC 60 094/38/23/2916G26/981/ FEW BINOVC DSNT SE-WSW
PK WND 2928/23/ 8/5// 50017

1 P.M.
Weather: Broken stratocumulus, broken altocumulus
Temperature: 42F; Dew Point: 24F; Relative Humidity: 49%
Wind: W @ 8G16 kts
Sea-level pressure: 1008.1 mb; 29.77 in. Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 43F
6-hr Min temp: 35F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E42 BKN 130 BKN 60 081/42/24/2708G16/977/ 8/550 56013
10043 20035

————————————————————–

SUMMARY FOR WEDNESDAY, JANUARY 10, 2024

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..35
MIN…….41   NORMAL…..19
MEAN……47   NORMAL…..27

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+20
TOTAL DEPARTURE FOR THE MONTH…………………..+36 [+3.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………18  DEPARTURE…….-20
TOTAL HEATING UNITS FOR THE MONTH…………..337  DEPARTURE…….-37
TOTAL HEATING UNITS FOR THE SEASON…………2232  DEPARTURE……-352
TOTAL HEATING UNITS LAST SEASON TO DATE…….2189  DEPARTURE…….+43

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)……….E70 SSE  @  03:27 A.M.
VECTOR #1 (1-Sec)……….69 SSE  @  03:27 A.M.
VECTOR #2 (1-Sec)……….73 SSE  @  02:47 A.M.
DAVIS #1……………….69 S    @  03:10 A.M.
DAVIS #2 ………………68 SSE  @  02:47 A.M.
RMY #1 (Instantaneous)…..75 SSE  @  03:27 A.M.
RMY #2 (Instantaneous)…..76 SSE  @  02:47 A.M.
MERLIN…………………62 S
RICHARDS (C5C) (Inst)……71      @  03:27 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………49 SSE  @  03:30 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..43      @  03:28 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..47      @  03:28 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………43 SE   @  02:48 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………46 SSE  @  03:28 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..40 SSE  @  03:28 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..47 SE   @  03:28 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………42      @  02:55 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……21.0 W [505 total miles] VECTOR #1…………….19.9
VECTOR #2…………….20.8
DAVIS #1……………..20.3 SW
DAVIS #2……………..20.8 SW
RMY #1……………….19.1 SW
RMY #2……………….20.6 SW
RICHARDS (C5C)………..19.5

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..4.55 DEPARTURE…..+3.04
TOTAL PRECIPITATION FOR THE YEAR (2024)……..4.55 DEPARTURE…..+3.04

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH……………….13.2 DEPARTURE……+7.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……13.5 DEPARTURE……-7.1

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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

1/1   37/25/31/+2/0.00/0.0/296/54         15 N   VEC1 14 N   RMY 15
1/2   39/19/29/+1/0.00/0.0/550/100        17 WNW VEC1 17 WNW RMY 17
1/3   42/25/34/+6/0.00/0.0/347/63         20 WNW VEC1 21 WNW RMY 21
1/4   42/21/32/+4/T/T/237/43              37 NNW VEC1 36 NNW RMY 39
1/5   32/17/25/-3/0.00/0.0/542/98         40 NW  VEC1 39 NW  RMY 39
1/6   34/24/29/+1/0.11/0.2/022/04         36 E   VEC1 36 E   RMY 36
1/7   33/21/27/0/0.84/13.0/000/00         38 ENE VEC1 37 ENE RMY 42
1/8   32/21/27/0/0.00/0.0/406/73          28 NW  VEC1 28 NW  RMY 31
1/9   40/23/32/+5/0.98/T/000/00           46 SE  VEC1 49 SE  RMY 46
1/10  53/41/47/+20/1.90/0.0/201/36        70 SSE VEC1 69 SSE RMY 75

1/11 The low since midnight is 35F, the daily normal low is 19F

————————————————————–

JANUARY DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR JANUARY 11
HIGH 65F IN 2020
LOW -7F IN 1968
PRECIP 1.58 INS. IN 2008
SNOW 10.2 INS. 1927
PEAK GUST 95e MPH S IN 1980

RECORDS FOR JANUARY 12
HIGH 68F IN 2020 [RECORD HIGH TIE FOR MONTH] LOW -15F IN 1886
PRECIP 2.04 INS. IN 2011
SNOW 18.2 INS. IN 2011
WIND 84e MPH S IN 1980

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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