Tuesday, September 3, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, SEPTEMBER 3, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0512E
SUNSET: 1814E
SUNNY SKIES AND DRY AIR WITH BELOW NORMAL TEMPERATURES ….
The spectacular weather continues today with plenty of bright
sunshine under clear skies, save for a few clouds that have been
observed well off in the distance throughout the day.
Temperatures are a bit below normal for this time of year with
readings reaching the low 70s early this afternoon, after a
morning low of 49F. This was the first temperature below 50F since
May 31st, when the mercury dropped to 48F. Also of note are the
remarkably low dew point values for early September, which have
dropped into the low 40s today. Definitely nice dry fall-like air!
The wind has been a bit inconsistent, picking up at times, then
going light again. The average speed for the day so far is around
9mph. The peak gust thus far is 23mph, which occurred just before
10am.
Visibility has been excellent today, holding at around 70 miles
all day!
The maximum temperature so far today is 72F, which is 5 degrees
below the normal high of 77F. The minimum temperature since
midnight is 49F, which is 11 degrees below the normal low of 60F.
————————————————————–
PRELIMINARY STATS FOR AUGUST 2024
TEMPERATURE, Deg. F
Avg. Max. 79.9 [-0.3]
Avg. Min. 61.6 [-1.0]
Mean 70.8 [-0.6]
24-hour corrected mean: 69.7
Max. for month: 94F on the 2nd
Min. for month: 51F on the 21st
HEATING DEGREE DAYS
Total heating units: 11 [ 000]
Total for the season: 11 [-007]
Total for last season: 1
COOLING DEGREE DAYS
Total cooling units: 197 [-012]
Total for the season: 694 [+098]
Total for last season: 570
PRECIPITATION, Inches
Total: 2.96 [-0.95]
Greatest in 24 hrs: 0.82 on the 9th-10th
SNOWFALL, Inches
Total: 0.0 [ 0.0]
Greatest in 24 hrs: 0.0 on the N/A
WIND, mph
Avg. uncorrected wind speed: 8.4 mph
Avg. corrected wind speed: 9.2 mph
Prevailing wind direction: West [14%]
Peak gust and direction: 50 SSW on the 9th
SUNSHINE:
Campbell-Stokes card minutes: 15342 of a possible 24780, or 62%
Astronomical total minutes: 15905 of a possible 25704, or 62%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, few cirrus distant ESE-SSW
Temperature: 55F; Dew Point: 46F; Relative Humidity: 71%
Wind: NW @ 7 kts
Sea-level pressure: 1025.8 mb; 30.29 in. Hg: rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 55F
6-hr Min temp: 49F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 70 258/55/46/3107/029/ FEW CI DSNT ESE-SSW/ 8/001 51018
10055 20049
10 A.M.
Weather: Clear, few cumulus distant ESE-SE and distant W-WNW
Temperature: 67F; Dew Point: 42F; Relative Humidity: 40%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1027.1 mb; 30.33 in. Hg: rising, then more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 70 271/67/42/3406/033/ FEW CU DSNT ESE-SE AND DSNT W-WNW
WND LGT/ 8/200 51013
1 P.M.
Weather: Clear, few small cumulus distant SSW-W-N
Temperature: 72F; Dew Point: 42F; Relative Humidity: 34%
Wind: NW @ 05 kts, wind light and variable
Sea-level pressure: 1026.4 mb; 30.31 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 72F
6-hr Min temp: 55F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 70 264/72/42/3105/031/ FEW SML CU DSNT SSW-W-N WND L/V/
8/100 56007 10072 20055
————————————————————–
SUMMARY FOR MONDAY, SEPTEMBER 2, 2024
TEMPERATURE (DEGREES F)
MAX…….79 NORMAL…..77
MIN…….56 NORMAL…..60
MEAN……68 NORMAL…..69
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-1
TOTAL DEPARTURE FOR THE MONTH……………………..+5 [+2.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON…………..11 DEPARTURE……..-9
TOTAL HEATING UNITS LAST SEASON TO DATE……….3 DEPARTURE……..+8
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….3 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH……………13 DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE SEASON………….707 DEPARTURE……+102
TOTAL COOLING UNITS LAST SEASON TO DATE……..573 DEPARTURE……+134
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)……….E31 NNW @ 10:33 P.M.
VECTOR #1 (1-Sec)……….31 NNW @ 10:31 P.M.
VECTOR #2 (1-Sec)……….32 N @ 10:32 P.M.
DAVIS #1……………….29 NNW @ 10:30 P.M.
DAVIS #2 ………………29 NW @ 02:20 P.M.
RMY #1 (Instantaneous)…..32 NNW @ 10:31 P.M.
RMY #2 (Instantaneous)…..31 NW @ 02:20 P.M.
MERLIN…………………29 NNW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 NNW @ 10:32 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 @ 10:31 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 10:34 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 NNW @ 10:32 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 N @ 10:34 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 NNW @ 10:32 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 NNW @ 10:34 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….10.1 NNW [242 total miles]
VECTOR #1……………..10.2
VECTOR #2……………..10.4
DAVIS #1………………10.3 NNW
DAVIS #2………………10.1 NNW
RMY #1…………………9.9 NNW
RMY #2………………..10.2 NNW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.22
TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.21 DEPARTURE…..+6.38
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 92/71/82/+9/T/779/90 24 W VEC1 24 W RMY 23
8/2 94/73/84/+11/0.01/579/67 31 SSW VEC1 31 SSW RMY 30 TSTM
8/3 92/75/84/+11/0.00/612/71 29 W VEC1 28 W RMY 28
8/4 85/68/77/+4/0.20/318/37 29 WSW VEC1 29 WSW RMY 31 TSTM
8/5 90/67/79/+6/T/686/80 28 SSW VEC1 28 SSW RMY 29
8/6 73/60/67/-6/0.56/009/01 26 ENE VEC1 26 ENE RMY 26
8/7 69/57/63/-10/0.18/119/14 25 NE VEC1 23 NE RMY 23
8/8 72/58/65/-7/0.09/187/22 20 ESE VEC1 20 ESE RMY 19
8/9 82/62/72/0/0.48/127/15 50 SSW VEC1 48 S RMY 50
8/10 85/68/77/+5/0.37/659/78 41 SSW VEC1 41 SSW RMY 43
8/11 81/63/72/0/0.00/741/88 30 W VEC1 29 SW RMY 30
8/12 77/59/68/-4/0.15/638/76 35 WNW VEC1 34 WNW RMY 36
8/13 80/58/69/-3/0.00/787/94 21 NW VEC1 22 NW RMY 21
8/14 82/62/72/0/0.00/676/81 16 NNW VEC1 15 NNW RMY 15
8/15 84/62/73/+1/0.57/491/59 44 N VEC1 42 N RMY 46 TSTM
8/16 74/61/68/-4/0.00/415/50 13 ESE VEC1 13 ESE RMY 13
8/17 75/60/68/-4/0.00/323/39 17 SE VEC1 16 SE RMY 15
8/18 71/62/67/-4/0.09/008/01 18 SE VEC1 19 SE RMY 17
8/19 78/66/72/+1/0.19/164/20 23 SSW VEC1 23 SSW RMY 22 TSTM
8/20 69/54/62/-9/0.07/238/29 32 NW VEC1 32 NW RMY 33
8/21 73/51/62/-9/0.00/752/92 20 WNW VEC1 19 WNW RMY 20
8/22 73/52/63/-8/0.00/766/94 20 W VEC1 20 WNW RMY 20
8/23 81/58/70/-1/0.00/788/97 22 WNW VEC1 21 WNW RMY 22
8/24 84/61/73/+2/0.00/735/91 20 WNW VEC1 19 WNW RMY 18
8/25 84/62/73/+3/0.00/540/67 17 W VEC1 17 W RMY 17
8/26 80/64/72/+2/T/546/68 18 NE VEC1 18 NE RMY 17
8/27 83/61/72/+2/0.00/705/88 20 SW VEC1 20 WSW RMY 20
8/28 88/64/76/+6/0.00/575/72 30 WNW VEC1 30 WNW RMY 30
8/29 71/57/64/-6/0.00/739/93 24 ENE VEC1 23 ENE RMY 23
8/30 73/56/65/-4/0.00/753/95 20 E VEC1 19 ENE RMY 20
8/31 82/58/70/+1/0.00/450/57 23 SSW VEC1 22 SSW RMY 22
————————————————————–
AUGUST DAILY RECORDS TO DATE
8/3 RECORD HIGH MINIMUM TEMPERATURE OF 75F,
TIED THE PREVIOUS RECORD SET IN 2020
8/15 PEAK GUST 44 MPH N,
TIED THE PREVIOUS RECORD SET IN 1941
————————————————————–
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/…/.. 28 SSW VEC1 27 SW RMY 28
9/2 79/56/68/-1/0.00/…/.. 31 NNW VEC1 31 NNW RMY 32
9/3 The low since midnight is 49F, the daily normal low is 60F.
————————————————————–
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 3
HIGH 95F IN 1929
LOW 43F IN 1893
PRECIP 3.82 INCHES IN 1972 (TROPICAL STORM CARRIE)
PEAK GUST 58 MPH NNE IN 1972 (TROPICAL STORM CARRIE)
RECORDS FOR SEPTEMBER 4
HIGH 90F IN 1953, 1973
LOW 46F IN 1987
PRECIP 3.22 INCHES IN 1922
PEAK GUST 47 MPH SE IN 1966
TODAY’S REPORT PREPARED BY: Matt Douglas
