Thursday, August 8, 2024

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

THURSDAY, AUGUST 8, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0445E
SUNSET:  1854E

MORE CLOUDS THAN SUN TODAY, BUT A BIT WARMER THAN YESTERDAY….

Clouds quickly moved in after a very nice sunrise early this
morning, leaving us with a sky that has featured more clouds
than sun through the day.

Temperatures are a bit warmer than yesterday, but still below
normal for the date. Readings have reached the low 70s early
this afternoon, which is still nearly 10 degrees below the
expected high for today. The dew point remains in the
comfortable range today with values in the upper 50s to low
60s. Just can’t beat this kind of air in August!

Winds have been fairly steady once again today, mainly out of
an easterly direction. The average speed for the day so far is
around 7mph. The peak gust so far is 20mph which occurred just
after noon-time.

Visibility has been decent today with views of 50-60 miles the
theme most of the day.

The maximum temperature so far today is 72F, which is 9 degrees
below the normal high of 81F. The minimum temperature since
midnight is 58F, which is 6 degrees below the normal low of 64F.

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Today’s Observations:

7 A.M.
Weather: Scattered stratocumulus, broken altocumulus/altostratus
Temperature: 62F; Dew Point: 60F; Relative Humidity: 92%
Wind: E @ 6 kts, wind light
Sea-level pressure: 1022.4 mb; 30.19 in. Hg: rising, then more rapidly
Visibility: 50 miles, 20 miles W-WNW, patchy ground fog
6-hr Max temp: 62F
6-hr Min temp: 58F
24-hr Precip:  Trace
BHO SA 1155 35 SCT E80 BKN 50 224/62/60/0906/019/ PTCHY GF DSNT
SW-WNW VSBY 20 W-WNW WND LGT/ 8/570 53017 70000 10062 20058

10 A.M.
Weather: Overcast altocumulus/altostratus, few breaks in overcast
distant NW-NE, few stratocumulus all quadrants, few stratocumulus
distant WNW-N
Temperature: 68F; Dew Point: 59F; Relative Humidity: 72%
Wind: E @ 7 kts
Sea-level pressure: 1022.7 mb; 30.20 in. Hg: rising unsteadily
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 E75 OVC 60 227/68/59/0907/020/ FEW BINOVC DSNT NW-NE
FEW SC ALQDS FEW CU DSNT WNW-N/ 8/87/ 52003

1 P.M.
Weather: Broken altocumulus/altostratus, few cumulus all quadrants
Temperature: 69F; Dew Point: 59F; Relative Humidity: 70%
Wind: ESE @ 10G16 kts
Sea-level pressure: 1022.9 mb; 30.21 in. Hg: rising, then steady
Visibility: 60 miles
6-hr Max temp: 72F
6-hr Min temp: 62F
6-hr Precip: 0.00 inches
BHO SA 1755 E85 BKN 60 229/69/59/1110G16/021/ FEW CU ALQDS/
8/270 51002 10072 20062

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SUMMARY FOR WEDNESDAY, AUGUST 7, 2024

TEMPERATURE (DEGREES F)
MAX…….69  NORMAL…..81
MIN…….57  NORMAL…..64
MEAN……63  NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….-10
TOTAL DEPARTURE FOR THE MONTH…………………….+25 [+3.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….2  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………….2  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE SEASON……………2  DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE……….0  DEPARTURE……..+2

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-8
TOTAL COOLING UNITS FOR THE MONTH……………83  DEPARTURE…….+28
TOTAL COOLING UNITS FOR THE SEASON………….580  DEPARTURE……+146
TOTAL COOLING UNITS LAST SEASON TO DATE……..453  DEPARTURE……+127

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)……….E25 NE   @   02:49 A.M.
VECTOR #1 (1-Sec)……….23 NE   @   02:49 A.M.
VECTOR #2 (1-Sec)……….26 NE   @   04:27 A.M.
DAVIS #1……………….24 E    @   04:37 A.M.
DAVIS #2 ………………24 E    @   04:23 A.M.
RMY #1 (Instantaneous)…..23 NE   @   03:07 A.M.
RMY #2 (Instantaneous)…..25 NE   @   04:23 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NE   @   03:13 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @   02:49 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16      @   04:49 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 E    @   04:40 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 E    @   04:43 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 ENE  @   04:40 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 ENE  @   04:43 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.5 ENE [181 total miles] VECTOR #1……………..7.6
VECTOR #2……………..8.1
DAVIS #1………………8.0 ENE
DAVIS #2………………7.5 E
RMY #1………………..7.7 ENE
RMY #2………………..8.0 ENE
RICHARDS (C5C)…………OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.95 DEPARTURE…..+0.02
TOTAL PRECIPITATION FOR THE YEAR (2024)…….39.20 DEPARTURE…..+7.57

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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/…/..                24 W   VEC1 24 W   RMY 23
8/2   94/73/84/+11/0.01/…/..            31 SSW VEC1 31 SSW RMY 30 TSTM
8/3   92/75/84/+11/0.00/…/..            29 W   VEC1 28 W   RMY 28
8/4   85/68/77/+4/0.20/…/..             29 WSW VEC1 29 WSW RMY 31 TSTM
8/5   90/67/79/+6/T/…/..                28 SSW VEC1 28 SSW RMY 29
8/6   73/60/67/-6/0.56/…/..             26 ENE VEC1 26 ENE RMY 26
8/7   69/57/63/-10/0.18/…/..            25 NE  VEC1 23 NE  RMY 23

8/8  The low since midnight is 58F, the daily normal low is 64F.

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AUGUST DAILY RECORDS TO DATE

8/3  RECORD HIGH MINIMUM TEMPERATURE OF 75F,
TIED THE PREVIOUS RECORD SET IN 2020

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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR AUGUST 8
HIGH 97F IN 2022
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958

RECORDS FOR AUGUST 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968

TODAY’S REPORT PREPARED BY: Matt Douglas