Monday, August 26, 2024

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

MONDAY, AUGUST 26, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0504E
SUNSET:  1827E

PARTIAL SUNSHINE WITH DEVELOPING SHOWERS AND THUNDERSTORMS….

Skies have featured varying amounts of cloud cover today, however
the trend early this afternoon has been for increasing coverage
as showers and thunderstorms develop across the region. While none
of the activity has been near Blue Hill yet, the upper canopy of
the cumulonimbus clouds have overspread the area.

Temperatures have warmed into the upper 70s today with the dew
point in the mid 60s. So while it’s a bit “cooler” today in terms
of actual temperature, the humidity levels are higher continuing
the summer feel out there.

Winds have been generally on the light side, but every now and
then it attempts to pick up a bit. A west-northwest wind early
this morning gradually veered around to an easterly direction.
Overall the average speed so far is only around 7mph. The peak
gust so far is 18mph, which occurred just after 11am.

Visibility has been quite limited today due to thin fog early this
morning, and general haziness thereafter. The view has only been
between 15-20 miles all day.

The maximum temperature so far today is 79F, which is equal to the
normal high of 79F. The minimum temperature since midnight is 64F,
which is 3 degrees above the normal low of 61F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus, thin broken cirrus, few lower altocumulus
castellanus all quadrants
Temperature: 66F; Dew Point: 64F; Relative Humidity: 92%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1022.2 mb ; 30.19 in. Hg: rising unsteadily
Visibility: 15 miles, thin fog
6-hr Max temp: 67F
6-hr Min temp: 64F
24-hr Precip:  0.00 inches
BHO SA 1155 E120 BKN 250 -BKN 15 222/66/64/3306/019/ FEW LWR ACC ALQDS
THN F ALQDS WND LGT/ 8/081 52004 10067 20064

10 A.M.
Weather: Scattered cirrus, few cumulus distant ENE-S-NNW, few
altocumulus/castellanus all quadrants
Temperature: 76F; Dew Point: 64F; Relative Humidity: 67%
Wind: ENE @ 5 kts, wind light
Sea-level pressure: 1022.2 mb; 30.19 in. Hg: rising, then falling
Visibility: 15 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 -SCT 15 222/76/64/0605/019/ FEW CU DSNT ENE-S-NNW
FEW AC/ACC ALQDS HAZY WND LGT/ 8/284 50000

1 P.M.
Weather: Broken cirrus, cumulonimbus distant ESE-S-NNW, towering
cumulus distant S-W-NW, few cumulus distant E-S-W-NNE, few altocumulus/
castellanus distant all quadrants
Temperature: 78F; Dew Point: 63F; Relative Humidity: 60%
Wind: ESE @ 6 kts, wind light
Sea-level pressure: 1021.7 mb; 30.17 in. Hg: falling, then steady
Visibility: 20 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 E250 BKN 20 217/78/63/1106/017/ CB DSNT ESE-S-NNW
TCU DSNT S-W-NW FEW CU DSNT E-S-W-NNE FEW AC/ACC DSNT ALQDS HAZY
WND LGT/ 8/983 56005 10079 20066

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SUMMARY FOR SUNDAY, AUGUST 25, 2024

TEMPERATURE (DEGREES F)
MAX…….84  NORMAL…..79
MIN…….62  NORMAL…..62
MEAN……73  NORMAL…..70

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+3
TOTAL DEPARTURE FOR THE MONTH…………………….-16 [-0.8 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……..+3
TOTAL HEATING UNITS FOR THE SEASON…………..10  DEPARTURE……..-4
TOTAL HEATING UNITS LAST SEASON TO DATE……….1  DEPARTURE……..-9

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….8  DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH…………..167  DEPARTURE…….-11
TOTAL COOLING UNITS FOR THE SEASON………….664  DEPARTURE……+100
TOTAL COOLING UNITS LAST SEASON TO DATE……..544  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)……….E17 W    @   11:35 P.M.
VECTOR #1 (1-Sec)……….17 W    @   11:34 P.M.
VECTOR #2 (1-Sec)……….16 W    @   11:37 P.M.
DAVIS #1……………….16 W    @   11:32 P.M.
DAVIS #2 ………………16 W    @   11:43 P.M.
RMY #1 (Instantaneous)…..17 W    @   11:34 P.M.
RMY #2 (Instantaneous)…..16 W    @   11:43 P.M.
MERLIN…………………16 W
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 W    @   11:46 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..12      @   11:46 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13      @   11:37 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 W    @   11:46 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………13 W    @   11:37 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 W    @   11:46 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 W    @   11:37 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….5.8 NNW [140 total miles] VECTOR #1……………..6.5
VECTOR #2……………..6.7
DAVIS #1………………6.3 W
DAVIS #2………………6.2 W
RMY #1………………..6.4 W
RMY #2………………..6.7 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…..-0.24
TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.21 DEPARTURE…..+7.31

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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  The low since midnight is 64F, 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 44e 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 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947

RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983

TODAY’S REPORT PREPARED BY: Matt Douglas