Friday, January 12, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JANUARY 12, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0712E
SUNSET: 1633E
BRIGHT SUNSHINE AND WARMER TEMPERATURES ON TOP OF GREAT BLUE
HILL TODAY….
This morning we started with mostly clear skies and a gorgeous
orange-red sunrise. There were a few altocumulus clouds lingering
around the edges of the horizon this morning and by the afternoon
a few more clouds have moved in. Overall though, it’s been a
beautiful day to soak in the sunshine and enjoy the warmer temps.
The temperature this morning was nearly at our normal high for
this time of year, and has continued to rise with the fair weather
conditions of bright sunshine and mostly clear skies. By the 1pm
observation we were at 45F. Dew points have been around the 30F
mark for most of the morning and afternoon, giving us an overall
comfortable feel.
The wind started off pretty steady during the overnight and early
morning hours and then slowed considerably once the wind shifted
from the WSW to NW direction. The average speed for the day so far
is around 11 mph, mostly due to the active overnight winds. The
peak gust so far was around 23 mph, which occurred just after 6am
this morning.
We started the day off with about 40 miles of visibility and
improved to 70 miles by the early afternoon.
The maximum temperature so far today is 46F degrees, this is 11
degrees above the normal high of 35F. The minimum temperature
so far since midnight is 33F degrees, this is 14 degrees above
the normal low of 19F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus NW-N-NE
Temperature: 34F; Dew Point: 29F; Relative Humidity: 82%
Wind: WNW @ 8 kts
Sea-level pressure: 1020.1 mb; 30.12 in. Hg: rising, then more rapidly
Visibility: 40 miles
6-hr Max temp: 34F
6-hr Min temp: 33F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 40 201/34/29/2908/012/ FEW AC NW-N-NE/ 8/050 53019
10034 20033
10 A.M.
Weather: Clear, few altocumulus castellanus distant NE, few altocumulus
ESE-S-WSW, few altocumulus distant NW-NNW
Temperature: 41F; Dew Point: 31F; Relative Humidity: 66%
Wind: NW @ 7 kts
Sea-level pressure: 1022.4 mb; 30.29 in. Hg: rising steadily
Visibility: 50 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 50 224/41/31/3207/019/ FEW ACC DSNT NE FEW AC ESE-S-WSW
FEW AC DSNT NW-NNW 8/050 52023
1 P.M.
Weather: Scattered altostratus, few stratocumulus NNW-N-E, few cirrus
ESE-S-W
Temperature: 46F; Dew Point: 29F; Relative Humidity: 51%
Wind: SW @ 4 kts, wind light
Sea-level pressure: 1008.1 mb; 29.77 in. Hg: rising, then falling
Visibility: 70 miles
6-hr Max temp: 47F
6-hr Min temp: 34F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E250 SCT 70 220/46/51/2304/018/ FEW SC NNW-N-E
FEW CI ESE-S-W WND LGT/ 8/531 58004 10047 20034
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SUMMARY FOR THURSDAY, JANUARY 11, 2024
TEMPERATURE (DEGREES F)
MAX…….43 NORMAL…..35
MIN…….35 NORMAL…..19
MEAN……39 NORMAL…..27
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+12
TOTAL DEPARTURE FOR THE MONTH…………………..+48 [+4.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………26 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………..363 DEPARTURE…….-49
TOTAL HEATING UNITS FOR THE SEASON…………2258 DEPARTURE……-364
TOTAL HEATING UNITS LAST SEASON TO DATE…….2228 DEPARTURE…….+30
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)……….E45 WNW @ 04:23 A.M.
VECTOR #1 (1-Sec)……….43 WNW @ 04:21 A.M.
VECTOR #2 (1-Sec)……….43 WNW @ 04:21 A.M.
DAVIS #1……………….44 W @ 04:23 A.M.
DAVIS #2 ………………41 WNW @ 04:22 A.M.
RMY #1 (Instantaneous)…..47 WNW @ 04:22 A.M.
RMY #2 (Instantaneous)…..43 WNW @ 04:21 A.M.
MERLIN…………………34 WNW
RICHARDS (C5C) (Inst)……48 @ 04:27 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 WNW @ 04:23 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..27 @ 04:24 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 @ 04:23 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………30 W @ 04:24 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 WNW @ 04:23 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..26 WNW @ 04:23 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 WNW @ 04:23 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………27 @ 04:23 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……14.0 WNW [337 total miles]
VECTOR #1…………….13.7
VECTOR #2…………….14.4
DAVIS #1……………..14.3 W
DAVIS #2……………..14.4 WNW
RMY #1……………….13.1 W
RMY #2……………….14.1 W
RICHARDS (C5C)………..13.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..4.55 DEPARTURE…..+2.89
TOTAL PRECIPITATION FOR THE YEAR (2024)……..4.55 DEPARTURE…..+2.89
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……+7.1
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……13.5 DEPARTURE……-7.7
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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/…/.. 45 WNW VEC1 43 WNW RMY 47
1/12 The low since midnight is 33F, the daily normal low is 19F
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JANUARY DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
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
RECORDS FOR JANUARY 13
HIGH 60F IN 2018
LOW -11F IN 1912
PRECIP 1.54 INS. IN 1979
SNOWFALL 12.6 INS. IN 1964
PEAK GUST 74 MPH NE IN 1964
TODAY’S REPORT PREPARED BY: Amanda Joly
