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Friday, January 19, 2024

January 19, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, JANUARY 19, 2024 ALL TIMES ARE…

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

FRIDAY, JANUARY 19, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0709E
SUNSET:  1641E

OVERCAST SKIES AND COLD TEMPERATURES WITH LOW WINDS TODAY
ON BLUE HILL….

Today has been overcast with the sun only appearing dimly behind
the stratus clouds on occasion. Due to the cloudy conditions, the
temperatures have remained below normal, and have only slightly
risen from the 7am reading. The dew points have remained below 20F
which has given a very dry and cool feel to the air.

The wind has been much lighter than yesterday, with an average
speed of around 7mph. The peak gust so far today has been around
16mph, occurring just before 10am this morning.

Visibility has been in the 30 mile range today due to the hazy
conditions that persisted throughout the morning and afternoon.

The maximum temperature so far today is 27F degrees, this is 7
degrees below the normal high of 34F. The minimum temperature
so far since midnight is 20F degrees, this is 2 degrees above
the normal low of 18F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratus, few stratocumulus offshore NE-E
Temperature: 21F; Dew Point: 16F; Relative Humidity: 79%
Wind: N @ 7 kts
Sea-level pressure: 1013.5 mb; 29.93 in. Hg: falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 21F
6-hr Min temp: 20F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 2 inches
BHO SA 1155 E90 OVC 30 135/21/16/3607/993/ FEW SC OFFSHR NE-E HAZY/
8/6// 4/002 56013 10021 20020

10 A.M.
Weather: Overcast cirrostratus, stratocumulus NE-E-ESE, sun dimly visible
Temperature: 24F; Dew Point: 14F; Relative Humidity: 65%
Wind: NNE @ 5 kts, wind light
Sea-level pressure: 1012.3mb; 29.89 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E200 OVC 30 123/24/14/0305/989/ FEW SC NE-E-ESE, SUN DMLY VSBL
HAZY WND LGT/ 8/026 58012

1 P.M.
Weather: Overcast cirrostratus, few stratocumulus NNE-E-SE, sun dimly
visible
Temperature: 27F; Dew Point: 15F; Relative Humidity: 60%
Wind: N @ 7 kts
Sea-level pressure: 1009.7 mb; 29.82 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 27F
6-hr Min temp: 15F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 1 inch
BHO SA 1755 E220 OVC 30 097/27/15/3507/982/ FEW SC NNE-E-SE SUN DMLY VSBL
HAZY/ 8/026 4/001 58036 10027 20021

————————————————————–

SUMMARY FOR THURSDAY, JANUARY 18, 2024

TEMPERATURE (DEGREES F)
MAX…….26   NORMAL…..34
MIN…….13   NORMAL…..18
MEAN……20   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………-6
TOTAL DEPARTURE FOR THE MONTH…………………..+73 [+3.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………45  DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH…………..565  DEPARTURE…….-74
TOTAL HEATING UNITS FOR THE SEASON…………2460  DEPARTURE……-389
TOTAL HEATING UNITS LAST SEASON TO DATE…….2407  DEPARTURE…….+75

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)……….E30 WSW  @  01:55 A.M.
VECTOR #1 (1-Sec)……….30 WSW  @  01:55 A.M.
VECTOR #2 (1-Sec)……….28 W    @  03:00 A.M.
DAVIS #1……………….27 WSW  @  01:54 A.M.
DAVIS #2 ………………28 N    @  03:00 A.M.
RMY #1 (Instantaneous)…..29 WSW  @  01:55 A.M.
RMY #2 (Instantaneous)…..29 WSW  @  02:00 A.M.
MERLIN…………………22 W
RICHARDS (C5C) (Inst)……31      @  01:55 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WSW  @  03:19 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19      @  03:19 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19      @  03:42 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 WSW  @  01:56 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 WSW  @  01:35 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 WSW  @  03:19 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 WSW  @  01:35 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18      @  03:19 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……11.5 WSW [275 total miles] VECTOR #1…………….11.4
VECTOR #2…………….11.9
DAVIS #1……………..11.8 WSW
DAVIS #2……………..12.2 W
RMY #1……………….11.2 WSW
RMY #2……………….11.8 W
RICHARDS (C5C)………..11.6

* Reading impacted by icing

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..6.90 DEPARTURE…..+4.20
TOTAL PRECIPITATION FOR THE YEAR (2024)……..6.90 DEPARTURE…..+4.20

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH……………….16.8 DEPARTURE……+6.5
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……17.1 DEPARTURE……-8.3

————————————————————–

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  43/35/39/+12/0.00/0.0/162/29        45 WNW VEC1 43 WNW RMY 47
1/12  47/33/40/+13/0.00/0.0/533/95        29 SE  VEC1 28 ESE RMY 28
1/13  57/36/47/+21/1.72/0.0/146/26        47 ESE VEC1 51 ESE RMY 49
1/14  39/22/31/+5/0.02/0.4/328/58         53 WNW VEC1 52 WNW RMY 54
1/15  31/17/24/-2/T/T/475/84              30 WNW VEC1 29 WNW RMY 30
1/16  34/19/27/+1/0.61/3.2/000/00         36 NW  VEC1 33 NW* RMY 31*
1/17  25/13/19/-7/0.00/0.0/529/93         29 NW  VEC1 28 W*  RMY 27*
1/18  26/13/20/-6/0.00/0.0/…/..         30 WSW VEC1 30 WSW RMY 29

1/19 The low since midnight is 20F, the daily normal low is 18F

* Reading impacted by icing

————————————————————–

JANUARY DAILY RECORDS TO DATE

1/13: RECORD PRECIPITATION OF 1.72 INS,
BEATS PREVIOUS RECORD OF 1.54 INS SET IN 1979

————————————————————–

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

RECORDS FOR JANUARY 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943

RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978
PEAK GUST 76e MPH NE IN 1978

TODAY’S REPORT PREPARED BY: Amanda Joly

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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
Part I — Data Use Policy
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