Sunday, September 1, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, SEPTEMBER 1, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0510E
SUNSET: 1817E
CLOUDY, YET WARM AND HUMID ON THE FIRST DAY OF SEPTEMBER….
Today we observed mostly cloudy skies with limited visibility and an
increasingly significant southwesterly wind. Frequent gusts above
20 mph have been observed this afternoon with an average speed around
15 mph.
A couple showers came through earlier this morning, leaving only a trace
in the gauge at the 7 A.M. observation. Weather conditions were warm and
humid, with temperatures jumping into the low 80’s and dew points reaching
the low 70’s. The lack of sunshine makes hiking conditions a little more
bearable, yet still slightly uncomfortable.
Visibility was limited today, being 20 miles on average due to fog and
haze.
The maximum temperature so far today is 81F, which is 3 degrees
above the normal high of 78F. The minimum temperature since
midnight is 67F, which is 7 degrees above the normal low of 60F.
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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%
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Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus with some lower stratus fractus,
Broken altocumulus, Overcast cirrocumulus
with breaks
Temperature: 70F; Dew Point: 67F; Relative Humidity: 90%
Wind: SSW @ 9G14 kts
Sea-level pressure: 1013.2 mb; 29.92 in. Hg: rising, then more slowly
Visibility: 20 miles, thin fog all quadrants
6-hr Max temp: 70F
6-hr Min temp: 68F
24-hr Precip: Trace
BHO SA 1155 50 SCT 90 BKN 250 OVC 20 132/70/67/2009G14/992/ FEW BINOVC
ALQDS FEW LWR STFRA ALQDS THN F ALQDS/ 8/559 51003 6000/ 70000 10070 20068
10 A.M.
Weather: Overcast stratocumulus with breaks
Temperature: 79F; Dew Point: 70F; Relative Humidity: 75%
Wind: SSW @ 9G15 kts
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: falling, then more rapidly
Visibility: 20 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 50 OVC 20 122/79/70/2009G15/989/ FEW BINOVC ALQDS HAZY/ 8/500 58010
1 P.M.
Weather: Scattered stratocumulus, broken altocumulus
Temperature: 81F; Dew Point: 70F; Relative Humidity: 71%
Wind: SSW @ 12G19 kts
Sea-level pressure: 1011.1 mb; 29.86 in. Hg: falling, then more slowly
Visibility: 20 miles, hazy
6-hr Max temp: 81F
6-hr Min temp: 70F
6-hr Precip: 0.00 inches
BHO SA 1755 50 SCT 90 BKN 20 111/81/70/2012G19/986/ HAZY/ 8/550 56011 10081 20070
SUMMARY FOR SATURDAY, AUGUST 31, 2024
TEMPERATURE (DEGREES F)
MAX…….82 NORMAL…..78
MIN…….58 NORMAL…..60
MEAN……70 NORMAL…..69
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH…………………….-15 [-1.7 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……………11 DEPARTURE………0
TOTAL HEATING UNITS FOR THE SEASON…………..11 DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE……….1 DEPARTURE…….+10
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….5 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………..197 DEPARTURE…….-12
TOTAL COOLING UNITS FOR THE SEASON………….694 DEPARTURE…….+98
TOTAL COOLING UNITS LAST SEASON TO DATE……..570 DEPARTURE……+124
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)……….E23 SSW @ 05:34 P.M.
VECTOR #1 (1-Sec)……….22 SSW @ 06:34 P.M.
VECTOR #2 (1-Sec)……….22 SSW @ 05:34 P.M.
DAVIS #1……………….23 S @ 05:19 P.M.
DAVIS #2 ………………27 S @ 06:27 P.M.
RMY #1 (Instantaneous)…..22 SSW @ 04:38 P.M.
RMY #2 (Instantaneous)…..23 SSW @ 05:34 P.M.
MERLIN…………………21 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 SSW @ 05:03 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 SSW @ 04:39 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 SSW @ 06:27 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 S @ 04:40 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S @ 04:27 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SSW @ 01:01 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SSW @ 06:27 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….10.0 SSW [241 total miles]
VECTOR #1……………..10.4
VECTOR #2……………..11.0
DAVIS #1……………….9.8 S
DAVIS #2………………10.9 S
RMY #1………………..10.0 S
RMY #2………………..11.1 S
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..2.96 DEPARTURE…..-0.95
TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.21 DEPARTURE…..+6.60
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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 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
9/1 The low since midnight is 58F, the daily normal low is 60F.
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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
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR SEPTEMBER 1
HIGH 93F IN 1969, 2010
LOW 47F IN 1975, 2017
PRECIP 2.32 INCHES IN 2013
PEAK GUST 59e MPH S IN 1945, SSW IN 1965
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
TODAY’S REPORT PREPARED BY: Benjamin Turner
