Tuesday, August 29, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, AUGUST 29, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0506E
SUNSET: 1824E
MORE CLOUDS THAN SUN WITH INCREASING HUMIDITY LEVELS…
Clouds have dominated the sky today with only a few brief
peeks of sunshine at times. A fog bank is observed offshore
to the NNE through E early this afternoon with Boston
Harbor completely obscured by it.
Despite the clouds, the temperature has made it to the mid
70s, with the dew point rising from the low 60s to the upper
60s as the day has progressed. The increase in humidity
levels has certainly been noticeable as it’s starting to
feel rather uncomfortable outside.
The wind has been light all day with an average of only
around 6mph. The peak gust so far is only around 14mph.
Visibility has been a bit variable with patchy fog around
this morning, and now with the fog bank along the coast this
afternoon. Generally it has ranged between 8 and 40 miles
throughout the day.
The maximum temperature so far today has been 76F, which is
2 degrees below the normal high of 78F. The minimum temperature
since midnight is 61F, which is equal to the normal low of 61F.
Through yesterday, Summer of 2023 (Jun-Aug) is now 8th 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
8) 19.30 in 2023 (through 8/28)
9) 18.71 in 1989
10) 17.92 in 2013
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Today’s Observations:
7 A.M.
Weather: Scattered stratus fractus, scattered stratocumulus,
scattered altocumulus, broken cirrus
Temperature: 63F; Dew Point: 62F; Relative Humidity: 98%
Wind: E @ 5 kts, wind light
Sea-level pressure: 1017.6 mb; 30.05 in. Hg: rising, then falling
Visibility: 8 miles, 20 miles W-NW
6-hr Max temp: 63F
6-hr Min temp: 61F
24-hr Precip: 0.00 inches
BHO SA 1155 1 SCT 7 SCT 100 SCT 250 BKN 8 176/63/62/0905/005/
FEW LWR STFRA ALQDS PTCHY F ALQDS SUN DMLY VSBL VSBY 20 W-NW
WND LGT/ 8/654 50002 10063 20061
10 A.M.
Weather: Overcast status
Temperature: 68F; Dew Point: 66F; Relative Humidity: 92%
Wind: SE @ 4 kts, wind light
Sea-level pressure: 1017.6 mb; 30.05 in. Hg: rising, then falling
Visibility: 40 miles, lower distant NNE-ESE, thin fog NNE-ESE
3-hr Precip: 0.00 inches
BHO SA 1455 E6 OVC 40 176/68/66/1304/005/ THN F NNE-ESE
VSBY LWR DSNT NNE-ESE WND LGT/ 8/6// 50000
1 P.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 74F; Dew Point: 68F; Relative Humidity: 84%
Wind: ESE @ 3 kts, wind light and variable
Sea-level pressure: 1015.9 mb; 30.00 in. Hg: falling unsteadily
Visibility: 40 miles, 8 miles NNE-E
6-hr Max temp: 75F
6-hr Min temp: 63F
6-hr Precip: 0.00 inches
BHO SA 1755 E20 BKN 250 BKN 40 159/74/68/1103/000/
FEW LWR STFRA ALQDS F BNK OFFSHR NNE-E VSBY 8 NNE-E WND L/V/
8/504 57017 10075 20063
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SUMMARY FOR MONDAY, AUGUST 28, 2023
TEMPERATURE (DEGREES F)
MAX…….73 NORMAL…..79
MIN…….61 NORMAL…..61
MEAN……67 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-3
TOTAL DEPARTURE FOR THE MONTH…………………-51 [-2.0 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…………….1 DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE SEASON……………1 DEPARTURE…….-15
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE……..+1
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE MONTH…………..138 DEPARTURE…….-56
TOTAL COOLING UNITS FOR THE SEASON………….560 DEPARTURE…….-21
TOTAL COOLING UNITS LAST SEASON TO DATE……..803 DEPARTURE……-243
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)……….E17 SSE @ 08:06 P.M.
VECTOR #1 (1-Sec)……….17 SE @ 04:06 P.M.
VECTOR #2 (1-Sec)……….17 SSE @ 08:05 P.M.
DAVIS #1……………….16 SE @ 08:04 P.M.
DAVIS #2 ………………18 SE @ 08:05 P.M.
RMY #1 (Instantaneous)…..17 SE @ 04:08 P.M.
RMY #2 (Instantaneous)…..17 SSE @ 08:05 P.M.
MERLIN…………………15 SE
RICHARDS (C5C) (Inst)……16 @ 08:06 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………12 SSE @ 08:09 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..13 @ 08:06 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..12 @ 04:08 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 SSE @ 08:06 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………12 SE @ 04:08 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..13 SSE @ 08:06 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..12 SE @ 04:08 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………13 @ 08:06 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..5.0 SE [120 total miles]
VECTOR #1………………5.8
VECTOR #2………………6.0
DAVIS #1……………….5.2 SE
DAVIS #2……………….5.2 SSE
RMY #1…………………5.5 SE
RMY #2…………………5.9 SE
RICHARDS (C5C)………….6.3
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..5.30 DEPARTURE…..+1.75
TOTAL PRECIPITATION FOR THE YEAR…………..40.07 DEPARTURE…..+5.82
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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/…/.. 20 NE VEC1 20 NE RMY 20
8/28 73/61/67/-3/0.00/…/.. 17 SSE VEC1 17 SE RMY 17
8/29 The low since midnight is 61F, the daily normal low is 61F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S IN 1949
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965
TODAY’S REPORT PREPARED BY: Matt Douglas / Josh Polen
