Thursday, September 26, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, SEPTEMBER 26, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0536E
SUNSET: 1733E
CLOUDY AND COOL WITH RAIN SHOWERS DEVELOPING….
Clouds are once again dominating the sky today as a weather system
approaches the region. Light rain showers developed mid to late
this morning, but have been rather light to this point. 0.01″ has
fallen so far through the 1pm observation.
Temperatures are once again below normal today with readings reaching
the mid 60s. Dew points have risen to the mid 60s as well, so it
feels a bit humid out there today.
The wind was generally on the light side early this morning, but has
been gradually increasing as the day progresses. A southeast wind
has veered to a south wind as we reached the early afternoon. The
average speed for the day so far is around 10mph. The peak gust for
the day so far is 21mph, which occurred just after the 1pm
observation.
Visibility has been limited all day due to thin fog and rain showers.
The view has generally been 20 miles or less today.
The maximum temperature so far today is 66F, which is 3 degrees below
the normal high of 69F. The minimum temperature since midnight is 56F,
which is 4 degrees above the normal low of 52F.
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Today’s Observations:
7 A.M.
Weather: Broken stratus fractus, overcast altostratus
Temperature: 58F; Dew Point: 58F; Relative Humidity: 99%
Wind: SSE @ 8 kts
Sea-level pressure: 1021.8 mb; 30.17 in. Hg: rising, then falling
Visibility: 15 miles, thin fog
6-hr Max temp: 58F
6-hr Min temp: 56F
24-hr Precip: Trace
BHO SA 1155 E14 BKN 45 OVC 15 218/58/58/1508/017/ THN F ALQDS/ 8/62/
55002 6000/ 70000 10058 20056
10 A.M.
Weather: Overcast nimbostratus, very light rain showers, few breaks in
overcast distant SE-WSW, few stratus fractus all quadrants, higher
clouds visible distant SE-WSW
Temperature: 61F; Dew Point: 59F; Relative Humidity: 94%
Wind: SSE @ 9G16 kts
Sea-level pressure: 1020.7 mb; 30.14 in. Hg: falling, then more rapidly
Visibility: 20 miles, thin fog
3-hr Precip: Trace
BHO SA 1455 E40 OVC 20RW- 207/61/59/1609G16/014/ FEW BINOVC DSNT SE-WSW
FEW STFRA ALQDS HIER CLDS VSBL DSNT SE-WSW THN F ALQDS RW-53
PCPN VRY LGT/ 8/72/ 58011 6000/
1 P.M.
Weather: Overcast stratus
Temperature: 66F; Dew Point: 64F; Relative Humidity: 95%
Wind: SSW @ 9G17 kts
Sea-level pressure: 1018.2 mb; 30.07 in. Hg: falling, then more rapidly
Visibility: 15 miles, 7 miles SW-W, 10 miles N-NNE, thin fog
6-hr Max temp: 66F
6-hr Min temp: 58F
6-hr Precip: 0.01 inches
BHO SA 1755 E8 OVC 15 182/66/64/1909G17/007/ THN F ALQDS RW-B33E49
VSBY 8 SW-W 10 N-NNE/ 8/6// 58025 6001/ 10066 20058
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SUMMARY FOR WEDNESDAY, SEPTEMBER 25, 2024
TEMPERATURE (DEGREES F)
MAX…….65 NORMAL…..69
MIN…….56 NORMAL…..52
MEAN……61 NORMAL…..61
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………0
TOTAL DEPARTURE FOR THE MONTH……………………..+6 [ 0.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….4 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH……………49 DEPARTURE…….-19
TOTAL HEATING UNITS FOR THE SEASON…………..60 DEPARTURE…….-26
TOTAL HEATING UNITS LAST SEASON TO DATE………49 DEPARTURE…….+11
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH……………59 DEPARTURE…….-11
TOTAL COOLING UNITS FOR THE SEASON………….753 DEPARTURE…….+87
TOTAL COOLING UNITS LAST SEASON TO DATE……..689 DEPARTURE…….+64
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)……….E18 E @ 01:00 P.M.
VECTOR #1 (1-Sec)……….18 ESE @ 11:14 A.M.
VECTOR #2 (1-Sec)……….18 E @ 07:47 A.M.
DAVIS #1……………….18 ESE @ 06:26 P.M.
DAVIS #2 ………………18 ESE @ 06:26 P.M.
RMY #1 (Instantaneous)…..18 ESE @ 06:26 P.M.
RMY #2 (Instantaneous)…..19 ESE @ 06:26 P.M.
MERLIN…………………17 SE
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 ESE @ 01:45 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 @ 01:28 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 06:26 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 E @ 01:28 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………13 E @ 01:52 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..13 E @ 01:28 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 ESE @ 06:26 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.2 ESE [197 total miles]
VECTOR #1………………8.4
VECTOR #2………………8.4
DAVIS #1……………….8.7 ESE
DAVIS #2……………….8.5 ESE
RMY #1…………………8.3 ESE
RMY #2…………………8.4 ESE
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..1.41 DEPARTURE…..-1.90
TOTAL PRECIPITATION FOR THE YEAR (2024)…….42.62 DEPARTURE…..+4.70
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PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
9/1 82/67/75/+6/T/244/31 28 SSW VEC1 27 SW RMY 28
9/2 79/56/68/-1/0.00/644/82 31 NNW VEC1 31 NNW RMY 32
9/3 74/49/62/-6/0.00/766/98 23 NW VEC1 23 NNW RMY 23
9/4 80/56/68/0/0.00/732/94 18 ESE VEC1 19 SE RMY 18
9/5 77/58/68/0/0.00/737/95 20 ESE VEC1 19 ESE RMY 19
9/6 73/58/66/-2/0.00/240/31 22 E VEC1 21 ENE RMY 23
9/7 77/56/67/0/0.04/301/39 34 WNW VEC1 31 WNW RMY 33
9/8 70/50/60/-7/0.00/753/98 35 W VEC1 35 W RMY 34
9/9 75/51/63/-4/0.00/727/95 31 WNW VEC1 28 WNW RMY 30
9/10 78/56/67/+1/0.00/717/94 21 NW VEC1 20 SW RMY 21
9/11 78/53/66/0/0.00/714/94 20 S VEC1 19 S RMY 18
9/12 82/58/70/+4/0.00/711/94 20 S VEC1 19 S RMY 20
9/13 85/59/72/+7/0.00/595/79 21 SSW VEC1 20 SSW RMY 20
9/14 81/61/71/+6/0.00/691/92 21 ENE VEC1 20 ENE RMY 21
9/15 78/60/69/+4/0.00/598/80 23 SE VEC1 23 SE RMY 25
9/16 83/55/69/+5/0.00/700/94 22 SSW VEC1 21 SSW RMY 21
9/17 83/55/69/+5/0.00/453/61 16 SW VEC1 14 S RMY 15
9/18 77/60/69/+6/0.00/163/22 15 W VEC1 14 W RMY 14
9/19 69/60/65/+2/0.10/000/00 30 NE VEC1 30 NE RMY 31
9/20 64/58/61/-2/0.12/000/00 38 NE VEC1 38 NE RMY 40
9/21 58/55/57/-5/1.13/000/00 35 NNE VEC1 31 NNE RMY 31
9/22 63/54/59/-3/0.01/190/26 35 NE VEC1 31 NE RMY 34
9/23 62/52/57/-5/T/058/08 28 ENE VEC1 27 NE RMY 27
9/24 61/51/56/-5/0.01/087/12 25 ENE VEC1 22 ENE RMY 24
9/25 65/56/61/0/0.00/029/04 18 E VEC1 18 ESE RMY 18
9/26 The low since midnight is 56F, the daily normal low is 52F.
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SEPTEMBER 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 SEPTEMBER 26
HIGH 91F IN 2007
LOW 36F IN 1905,1922,1978
PRECIP 3.84 INCHES IN 1888
PEAK GUST 54e MPH S IN 1977
RECORDS FOR SEPTEMBER 27
HIGH 86F IN 2017
LOW 32F IN 1947
PRECIP 2.26 INCHES IN 1962
PEAK GUST 100 MPH SSE IN 1985 (HURRICANE GLORIA)
TODAY’S REPORT PREPARED BY: Matt Douglas
