Saturday, September 2, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, SEPTEMBER 2, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0510E
SUNSET: 1817E
SUPERB SATURDAY UNDER MAINLY SUNNY SKIES AND COMFORTABLE HUMIDITY…
Today has been another pretty fine day with plenty of sunshine,
but it’s getting filtered a bit by some increasing high thin
cirrus clouds.
The temperature has reached the upper 70s, which is close to
normal for this time of year. The dew point has however been
slowly climbing from the low to mid 50s to the upper 50s,
unfortunately destined for the 60s later tonight and tomorrow.
The wind has been steady, but somewhat on the light side today
with an average speed of around 10mph so far. The peak gust for
the day, which occurred at noon-time, is around 21mph.
Visibility has remained steady at around 40 miles all day.
The maximum temperature so far today has been 78F, which is
1 degree above the normal high of 77F. The minimum temperature
since midnight is 56F, which is 4 degrees below the normal low
of 60F.
Through yesterday, Summer of 2023 (Jun-Aug) is now tied for
7th wettest on record going back to 1886. Here are the top 10
wettest summers as compiled by our Chief Scientist, Mike Iacono.
BHO Highest Summer (June-August) Precipitation, inches (1886-2023):
1) 25.22 in 1998
2) 24.61 in 1955
3) 24.09 in 1938
4) 21.56 in 2006
5) 21.02 in 1922
6) 20.23 in 1982
7) 19.68 in 2021
19.68 in 2023
9) 18.71 in 1989
10) 17.92 in 2013
————————————————————–
PRELIMINARY STATS FOR AUGUST 2023
TEMPERATURE, Deg. F
Avg. Max. 77.5 [-2.7]
Avg. Min. 61.6 [-1.0]
Mean 69.6 [-1.8]
24-hour corrected mean: 68.7
Max. for month: 84F on the 12th and 21st
Min. for month: 54F on the 2nd
HEATING DEGREE DAYS
Total heating units: 1 [-010]
Total for the season: 1 [-017]
Total for last season: 0
COOLING DEGREE DAYS
Total cooling units: 148 [-061]
Total for the season: 570 [-026]
Total for last season: 836
PRECIPITATION, Inches
Total: 5.68 [+1.77]
Greatest in 24 hrs: 1.50 on the 24th-25th
SNOWFALL, Inches
Total: 0.0 [0.0]
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 9.5 mph
Avg. corrected wind speed: 10.1 mph
Prevailing wind direction: South-southwest [14%]
Peak gust and direction: 39 S on the 8th, WNW on the 9th
SUNSHINE:
Campbell-Stokes card minutes: 14076 of a possible 24780, or 57%
Astronomical total minutes: 14631 of a possible 25763, or 57%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, thin smoke layer aloft all quadrants
Temperature: 58F; Dew Point: 54F; Relative Humidity: 87%
Wind: WSW @ 8 kts
Sea-level pressure: 1024.3 mb; 30.25 in. Hg: falling, then rising
Visibility: 40 miles
6-hr Max temp: 58F
6-hr Min temp: 56F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 40 243/58/54/2408/025/ THN K LYR ALF ALQDS/
8/000 55000 10058 20056
10 A.M.
Weather: Clear, few cirrus distant W-N-NE, thin smoke layer aloft
all quadrants
Temperature: 72F; Dew Point: 58F; Relative Humidity: 62%
Wind: SW @ 6 kts, wind light
Sea-level pressure: 1022.5 mb; 30.19 in. Hg: falling, then more slowly
Visibility: 40 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 40 225/72/58/2306/019/ FEW CI DSNT W-N-NE
THN K LYR ALF ALQDS WND LGT/ 8/001 56018
1 P.M.
Weather: Thin broken cirrus
Temperature: 77F; Dew Point: 58F; Relative Humidity: 53%
Wind: WSW @ 9 kts
Sea-level pressure: 1020.3 mb; 30.13 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 78F
6-hr Min temp: 58F
6-hr Precip: 0.00 inches
BHO SA 1755 E250 -BKN 40 203/77/58/2409/013/ HAZY/ 8/001 58022
10078 20058
————————————————————–
SUMMARY FOR FRIDAY, SEPTEMBER 1, 2023
TEMPERATURE (DEGREES F)
MAX…….73 NORMAL…..78
MIN…….52 NORMAL…..60
MEAN……63 NORMAL…..69
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-6
TOTAL DEPARTURE FOR THE MONTH………………….-6 [-6.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….2 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………….2 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE SEASON……………3 DEPARTURE…….-16
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE……..+3
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE SEASON………….570 DEPARTURE…….-31
TOTAL COOLING UNITS LAST SEASON TO DATE……..840 DEPARTURE……-270
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)……….E23 SSW @ 08:53 P.M.
VECTOR #1 (1-Sec)……….22 SSW @ 08:53 P.M.
VECTOR #2 (1-Sec)……….22 SSW @ 08:46 P.M.
DAVIS #1……………….21 S @ 08:24 P.M.
DAVIS #2 ………………24 S @ 08:24 P.M.
RMY #1 (Instantaneous)…..21 SSW @ 08:53 P.M.
RMY #2 (Instantaneous)…..23 SSW @ 08:46 P.M.
MERLIN…………………20 WSW
RICHARDS (C5C) (Inst)……20 @ 11:47 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 SW @ 10:48 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 08:53 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 11:56 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 SW @ 11:58 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S @ 08:25 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SSW @ 08:53 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 SSW @ 08:53 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………15 @ 11:56 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.2 N [197 total miles]
VECTOR #1………………8.6
VECTOR #2………………8.9
DAVIS #1……………….8.5 ENE
DAVIS #2……………….8.6 E
RMY #1…………………8.4 ENE
RMY #2…………………8.9 ENE
RICHARDS (C5C)………….8.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE YEAR…………..40.45 DEPARTURE…..+5.73
————————————————————–
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 76/58/67/-6/0.00/763/88 24 NW VEC1 24 NW RMY 24
8/2 75/54/65/-8/0.00/830/96 23 SSW VEC1 22 SSW RMY 23
8/3 79/59/69/-4/0.00/725/84 32 SSW VEC1 34 SSW RMY 34
8/4 77/62/70/-3/T/172/20 29 SSW VEC1 29 SSW RMY 29
8/5 83/66/75/+2/0.00/523/61 18 NW VEC1 16 WNW RMY 17
8/6 82/60/71/-2/0.00/839/98 20 W VEC1 19 W RMY 19
8/7 72/65/69/-4/0.14/034/04 29 SSE VEC1 30 SSE RMY 29
8/8 82/68/75/+3/0.47/187/22 39 S VEC1 42 S RMY 42
8/9 82/66/74/+2/0.00/756/89 39 WNW VEC1 38 WNW RMY 38
8/10 83/64/74/+2/0.02/254/30 28 SSW VEC1 27 SSW RMY 28
8/11 80/63/72/+0/0.07/810/96 36 W VEC1 36 W RMY 38
8/12 84/61/73/+1/0.00/733/87 26 SSW VEC1 26 SSW RMY 26
8/13 84/68/76/+4/0.07/629/75 26 SSW VEC1 26 SSW RMY 27 TSTM
8/14 82/63/73/+1/T/536/64 25 W VEC1 24 W RMY 29
8/15 70/64/67/-5/0.70/000/00 28 NE VEC1 27 NE RMY 28
8/16 68/64/66/-6/T/000/00 18 ESE VEC1 19 ENE RMY 18
8/17 70/62/66/-6/T/116/14 15 E VEC1 14 E RMY 14
8/18 79/61/70/-1/1.48/298/36 32 W VEC1 34 W RMY 33 TSTM
8/19 72/57/65/-6/0.00/371/45 29 W VEC1 30 W RMY 30
8/20 81/59/70/-1/0.00/764/93 23 W VEC1 22 W RMY 21
8/21 84/64/74/+3/0.85/384/47 29 NE VEC1 30 ENE RMY 29
8/22 75/59/67/-4/0.00/792/97 29 NNE VEC1 29 NNE RMY 29
8/23 76/56/66/-5/0.00/805/99 20 NNE VEC1 20 NNE RMY 20
8/24 78/58/68/-3/0.02/568/70 24 S VEC1 24 S RMY 23
8/25 69/58/64/-6/1.48/000/00 35 S VEC1 36 S RMY 37
8/26 83/68/76/+6/0.00/500/62 23 SSW VEC1 22 SSW RMY 22
8/27 75/61/68/-2/0.00/731/91 20 NE VEC1 20 NE RMY 20
8/28 73/61/67/-3/0.00/416/52 17 SSE VEC1 17 SE RMY 17
8/29 76/61/69/-1/0.11/096/12 17 ENE VEC1 16 ENE RMY 15
8/30 79/62/71/+2/0.27/215/27 29 WNW VEC1 28 WNW RMY 29
8/31 73/57/65/-4/0.00/784/99 30 NNW VEC1 30 NNW RMY 30
————————————————————–
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 73/52/63/-6/0.00/…/.. 23 SSW VEC1 22 SSW RMY 21
9/2 The low since midnight is 56F, the daily normal low is 60F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR SEPTEMBER 2
HIGH 99F IN 1953 (SEPTEMBER MAXIMUM RECORD)
LOW 44F IN 1909
PRECIP 2.73 INCHES IN 1947
PEAK GUST 55e MPH WNW IN 1944
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)
TODAY’S REPORT PREPARED BY: Matt Douglas / Josh Polen
