Friday, January 5, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JANUARY 5, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1626E
SUNNY AND BREEZY WITH BELOW NORMAL TEMPERATURES TODAY….
Today has been a beautiful day despite the cold temperatures
and gusty conditions. The day started with a few altocumulus
clouds out over the shore and then as the day progressed we
had a few more clouds move through to our west.
Temperatures have been slightly below normal today and the dew
points have remained below 15F, giving off a very crisp, dry
feel to the air.
The wind has been quite productive today, with winds out of the
northwest at an average speed around 15mph. The peak gust so far
has been around 36mph, occurring shortly before 1pm.
Visibility remained in the 50 mile range for most of the morning
and by the afternoon had improved slightly to 60 miles.
The maximum temperature so far today is 31F degrees, this is 5
degrees below the normal high of 36F. The minimum temperature
since midnight is 17F degrees, this is 3 degrees below the normal
low of 20F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus distant NE-E-S
Temperature: 17F; Dew Point: 10F; Relative Humidity: 72%
Wind: NW @ 12G23 kts
Sea-level pressure: 1022.1 mb; 30.18 in. Hg: rising unsteadily
Visibility: 50 miles
6-hr Max temp: 20F
6-hr Min temp: 17F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 50 221/17/10/3112G23/018/ FEW AC DSNT NE-E-S/
8/050 52013 10020 20017
10 A.M.
Weather: Clear, few stratocumulus NE-ESE few altostratus distant
SW-NW
Temperature: 24F; Dew Point: 12F; Relative Humidity: 59%
Wind: NW @ 9G19 kts
Sea-level pressure: 1023.6 mb; 30.23 in. Hg: rising then steady
Visibility: 50 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 50 236/24/12/3109G19/023/ FEW SC NE-ESE
FEW AS DSNT SW-NW/ 8/550 51015
1 P.M.
Weather: Clear, few stratocumulus SSW-W-NNW, few altocumulus
all quadrants
Temperature: 31F; Dew Point: 14F; Relative Humidity: 48%
Wind: NW @ 12G26 kts, peak wind 36mph (31 kts) @ 12:40pm
Sea-level pressure: 1021.0 mb; 30.15 in. Hg: falling, then
more rapidly
Visibility: 60 miles
6-hr Max temp: 31F
6-hr Min temp: 17F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 60 210/31/14/3212G26/015/ FEW SC SSW-W-NNW
FEW AC ALQDS PK WND 3231/40/ 8/550 58026 10031 20017
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SUMMARY FOR THURSDAY, JANUARY 4, 2024
TEMPERATURE (DEGREES F)
MAX…….42 NORMAL…..36
MIN…….21 NORMAL…..20
MEAN……32 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+4
TOTAL DEPARTURE FOR THE MONTH…………………..+13 [+3.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………33 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..134 DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE SEASON…………2029 DEPARTURE……-328
TOTAL HEATING UNITS LAST SEASON TO DATE…….2000 DEPARTURE…….+29
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)……….E37 NNW @ 09:56 P.M.
VECTOR #1 (1-Sec)……….36 NNW @ 06:44 P.M.
VECTOR #2 (1-Sec)……….37 NNW @ 08:08 P.M.
DAVIS #1……………….33 NNE @ 06:32 P.M.
DAVIS #2 ………………33 NNW @ 09:58 P.M.
RMY #1 (Instantaneous)…..39 NNW @ 06:44 P.M.
RMY #2 (Instantaneous)…..39 NNW @ 08:08 P.M.
MERLIN…………………35 NW
RICHARDS (C5C) (Inst)……36 @ 09:56 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 NNW @ 03:45 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..24 @ 03:46 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25 @ 09:30 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 NNW @ 03:46 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 NNW @ 09:30 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 NNW @ 03:45 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 NNW @ 09:30 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………24 @ 03:45 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.8 NNW [258 total miles]
VECTOR #1…………….10.6
VECTOR #2…………….11.0
DAVIS #1……………..10.8 WNW
DAVIS #2……………..10.7 NW
RMY #1……………….10.3 WNW
RMY #2……………….10.7 WNW
RICHARDS (C5C)………..10.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.61
TOTAL PRECIPITATION FOR THE YEAR (2024)…….TRACE DEPARTURE…..-0.61
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-2.2
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…….0.3 DEPARTURE…..-17.0
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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/…/.. 37 NNW VEC1 36 NNW RMY 39
1/5 The low since midnight is 17F, the daily normal low is 20F
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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 5
HIGH 61F IN 2007
LOW -9F IN 1981
PRECIP 1.15 INS. IN 2019
SNOW 4.5 INS. IN 1891
PEAK GUST 70 MPH WNW IN 1959
RECORDS FOR JANUARY 6
HIGH 66F IN 2007
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH]
SNOWFALL 5.2 INS. IN 2005
PEAK GUST 70 MPH WNW IN 1959
TODAY’S REPORT PREPARED BY: Amanda Joly
