Monday, September 4, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, SEPTEMBER 4, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0512E
SUNSET: 1813E
MAINLY SUNNY WITH VERY WARM AND HUMID CONDITIONS TODAY…
Yet another day with mainly sunny skies as we are in a dry
stretch in terms of lack of rainfall. We did manage to get a
trace of rain yesterday morning as a few very light rain
showers pushed through. As it looks right now, we don’t expect
any rain for the next few days. What a change from the wet
pattern we were in during July and August, at least for now.
Temperatures have warmed into the mid 80s with the dew point
pushing into the mid to upper 60s. This is definitely making
it feel a bit uncomfortable today.
The wind has been rather light and variable today with an
average speed of only around 7mph.
Visibility has been limited to around 15-20 miles all day due to
haziness.
The maximum temperature so far today has been 85F, which is
8 degrees above the normal high of 77F. The minimum temperature
since midnight is 68F, which is 9 degrees above the normal low
of 59F.
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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%
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus/castellanus distant SSW-W,
few cirrus all quadrants
Temperature: 72F; Dew Point: 66F; Relative Humidity: 82%
Wind: NNE @ 5 kts, wind light
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: rising, then more slowly
Visibility: 15 miles, hazy
6-hr Max temp: 72F
6-hr Min temp: 68F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 15 122/72/66/0205/989/ FEW AC/ACC DSNT SSW-W
FEW CI ALQDS HAZY WND LGT/ 8/081 51008 10072 20068
10 A.M.
Weather: Clear, few cirrus distant NE-S
Temperature: 79F; Dew Point: 67F; Relative Humidity: 68%
Wind: NE @ 3 kts, wind light and variable
Sea-level pressure: 1012.6 mb; 29.90 in. Hg: rising, then steady
Visibility: 15 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 15 126/79/67/0503/990/ FEW CI DSNT NE-S HAZY
WND L/V/ 8/001 51004
1 P.M.
Weather: Clear, few cumulus all quadrants, few altocumulus E-SE,
few cirrus all quadrants
Temperature: 83F; Dew Point: 65F; Relative Humidity: 55%
Wind: NNE @ 2 kts, wind light and variable
Sea-level pressure: 1011.4 mb; 29.87 in. Hg: falling, then more rapidly
Visibility: 20 miles, hazy
6-hr Max temp: 84F
6-hr Min temp: 72F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 20 114/83/65/0202/987/ FEW CU ALQDS FEW AC E-SE
FEW CI ALQDS HAZY WND L/V/ 8/251 58012 10084 20072
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SUMMARY FOR SUNDAY, SEPTEMBER 3, 2023
TEMPERATURE (DEGREES F)
MAX…….85 NORMAL…..77
MIN…….61 NORMAL…..60
MEAN……73 NORMAL…..68
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+5
TOTAL DEPARTURE FOR THE MONTH………………….-2 [-0.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………….2 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON……………3 DEPARTURE…….-18
TOTAL HEATING UNITS LAST SEASON TO DATE……….2 DEPARTURE……..+1
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….8 DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE MONTH……………11 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE SEASON………….581 DEPARTURE…….-29
TOTAL COOLING UNITS LAST SEASON TO DATE……..845 DEPARTURE……-264
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)……….E21 SW @ 12:45 A.M.
VECTOR #1 (1-Sec)……….21 SW @ 12:45 A.M.
VECTOR #2 (1-Sec)……….21 SW @ 12:01 A.M.
DAVIS #1……………….20 WSW @ 02:52 A.M.
DAVIS #2 ………………21 W @ 12:56 P.M.
RMY #1 (Instantaneous)…..21 SW @ 02:27 A.M.
RMY #2 (Instantaneous)…..21 SW @ 12:01 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……22 @ 02:27 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 SW @ 02:22 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 02:32 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 02:19 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 SSW @ 02:32 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 SW @ 02:33 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SW @ 02:19 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SW @ 02:19 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………13 @ 03:02 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.2 W [197 total miles]
VECTOR #1………………8.7
VECTOR #2………………8.8
DAVIS #1……………….8.6 WSW
DAVIS #2……………….8.7 W
RMY #1…………………8.5 WSW
RMY #2…………………8.8 W
RICHARDS (C5C)………….8.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.34
TOTAL PRECIPITATION FOR THE YEAR…………..40.45 DEPARTURE…..+5.50
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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 79/56/68/-1/0.00/…/.. 25 SW VEC1 24 SW RMY 26
9/3 85/61/73/+5/T/…/.. 21 SW VEC1 21 SW RMY 21
9/4 The low since midnight is 68F, the daily normal low is 59F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
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
RECORDS FOR SEPTEMBER 5
HIGH 90F IN 1971
LOW 45F IN 1906
PRECIP 1.37 INCHES IN 1907
PEAK GUST 46 MPH NW IN 1994
TODAY’S REPORT PREPARED BY: Matt Douglas
