Wednesday, August 28, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

WEDNESDAY, AUGUST 28, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0506E
SUNSET:  1824E

VERY WARM AND HUMID TODAY UNDER PARTLY SUNNY SKIES….

Summer weather returns today with very warm temperatures and high
dew points making for muggy conditions. Sunshine has been mixing
with clouds of various coverage and heights today An area of mid
level clouds moved through early this morning, followed by mainly
high clouds through the late morning hours. Low level convective
clouds developed early this afternoon and have been enough to
block the sun at times.

Temperatures have warmed into the mid-upper 80s this afternoon
with the dew point reaching the low 70s. This is borderline
oppressive humidity levels. Thankfully there is a breeze today
to help mitigate the stuffiness a bit.

As mentioned, winds have been busy today with an average speed
so far of around 14mph. The direction has gradually veered from
the southwest to the northwest. Frequent gusts have reached
between 20-25mph, with a peak gust so far of 30mph, which occurred
just after 11am.

Visibility has been quite limited again today due to haziness. The
view has only been between 15-30 miles once again today.

The maximum temperature so far today is 87F, which is 8 degrees
above the normal high of 79F. The minimum temperature since
midnight is 66F, which is 5 degrees above the normal low of 61F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus/castellanus, broken cirrus
Temperature: 71F; Dew Point: 66F; Relative Humidity: 85%
Wind: SW @ 13G18 kts
Sea-level pressure: 1013.3 mb ; 29.92 in. Hg: falling, then rising
Visibility: 20 miles, hazy
6-hr Max temp: 71F
6-hr Min temp: 66F
24-hr Precip:  0.00 inches
BHO SA 1155 E100 BKN 250 BKN 20 133/71/66/2213G18/992/ HAZY/ 8/084
55000 10071 20066

10 A.M.
Weather: Broken cirrus
Temperature: 82F; Dew Point: 70F; Relative Humidity: 68%
Wind: W @ 13G20 kts
Sea-level pressure: 1012.9 mb; 29.91 in. Hg: falling unsteadily
Visibility: 20 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E250 BKN 20 129/82/70/2613G20/991/ HAZY/ 8/001 57004

1 P.M.
Weather: Broken cumulus, broken altocumulus, broken cirrus
Temperature: 86F; Dew Point: 70F; Relative Humidity: 59%
Wind: WNW @ 10G17 kts
Sea-level pressure: 1012.3 mb; 29.89 in. Hg: falling, then steady
Visibility: 30 miles, hazy
6-hr Max temp: 87F
6-hr Min temp: 71F
6-hr Precip: 0.00 inches
BHO SA 1755 E40 BKN 50 BKN 250 BKN 30 123/86/70/3010G17/989/ HAZY/
8/261 56006 10087 20071

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SUMMARY FOR TUESDAY, AUGUST 27, 2024

TEMPERATURE (DEGREES F)
MAX…….83  NORMAL…..79
MIN…….61  NORMAL…..61
MEAN……72  NORMAL…..70

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+2
TOTAL DEPARTURE FOR THE MONTH…………………….-12 [-0.6 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……………10  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE SEASON…………..10  DEPARTURE……..-5
TOTAL HEATING UNITS LAST SEASON TO DATE……….1  DEPARTURE……..-9

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….7  DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH…………..181  DEPARTURE……..-8
TOTAL COOLING UNITS FOR THE SEASON………….678  DEPARTURE……+103
TOTAL COOLING UNITS LAST SEASON TO DATE……..558  DEPARTURE……+120

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)……….E20 SW   @   11:53 P.M.
VECTOR #1 (1-Sec)……….20 WSW  @   10:35 P.M.
VECTOR #2 (1-Sec)……….19 SW   @   11:53 P.M.
DAVIS #1……………….20 SW   @   11:50 P.M.
DAVIS #2 ………………19 S    @   06:09 P.M.
RMY #1 (Instantaneous)…..20 WSW  @   10:35 P.M.
RMY #2 (Instantaneous)…..20 SW   @   11:53 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 SW   @   10:00 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @   11:55 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15      @   10:10 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 SSW  @   11:55 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 WSW  @   10:10 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 SW   @   11:55 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SW   @   11:55 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….6.3 WNW [150 total miles] VECTOR #1……………..6.9
VECTOR #2……………..7.2
DAVIS #1………………6.5 SW
DAVIS #2………………6.7 WSW
RMY #1………………..6.8 W
RMY #2………………..7.1 W
RICHARDS (C5C)…………OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..2.96 DEPARTURE…..-0.48
TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.21 DEPARTURE…..+7.07

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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/…/..             20 W   VEC1 20 WNW RMY 20
8/23  81/58/70/-1/0.00/…/..             22 WNW VEC1 21 WNW RMY 22
8/24  84/61/73/+2/0.00/…/..             20 WNW VEC1 19 WNW RMY 18
8/25  84/62/73/+3/0.00/…/..             17 W   VEC1 17 W   RMY 17
8/26  80/64/72/+2/T/…/..                18 NE  VEC1 18 NE  RMY 17
8/27  83/61/72/+2/0.00/…/..             20 SW  VEC1 20 WSW RMY 20

8/28  The low since midnight is 66F, the daily normal low is 61F.

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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 AUGUST 28
HIGH 95F IN 1948
LOW 43F IN 1885
PRECIP 1.80 INCHES IN 1922
PEAK GUST 87 MPH SSE IN 1971 (DORIA)

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

TODAY’S REPORT PREPARED BY: Matt Douglas