Tuesday, August 8, 2023

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

TUESDAY, AUGUST 8, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0444E
SUNSET:  1855E

STORMY MORNING GIVES WAY TO PARTIAL SUNSHINE THIS AFTERNOON…

It was a rather stormy morning across the area with periods
of showers, thunderstorms, and even a confirmed tornado on
the South Coast of Massachusetts. While no thunder was observed
here at Blue Hill, we did have a couple of periods of downpours
which left 0.47″ of water in the gauge. However some locales to
the west through north of here received over 3-4 inches of
water, which led to some flooding.

In addition to the rain, winds were gusty this morning with
frequent gusts over 30mph, and a peak near 40mph. The average
speed for the day so far is around 15mph.

As we entered the afternoon hours, the rain moved east and
some partial clearing had taken place. However, the dew point
has been on the rise as a warm front has passed through.
Readings have reached the mid 70s early this afternoon, making
it feel rather oppressive out there.

The temperature has rebounded to the upper 70s and low 80s
with the partial sun.

Visibility was limited this morning due to rain and fog, but
has improved to around 40 miles early this afternoon.

The temperature has been seasonable today with a high so far
of 80F, which is 1 degree below the normal high of 81F. The
minimum temperature today is 69F, which is 5 degrees above
the normal low of 64F.

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Today’s Observations:

7 A.M.
Weather: Broken stratus fractus, broken stratocumulus,
overcast altostratus, few breaks in overcast overhead, virga NW-NNW
Temperature: 73F; Dew Point: 71F; Relative Humidity: 94%
Wind: S @ 15G23 kts
Sea-level pressure: 1005.9 mb; 29.70 in. Hg: falling unsteadily
Visibility: 15 miles, lower NW-NNW, thin fog
6-hr Max temp: 73F
6-hr Min temp: 70F
24-hr Precip: 0.14 ins.
BHO SA 1155 E10 BKN 16 BKN 65 OVC 15 059/73/71/1715G23/970/
FEW BINOVC OVHD THN F ALQDS RW-B42E51 VIRGA NW-NNW VSBY LWR NW-NNW/
8/77/ 57018 6000/ 70014 10073 20070

10 A.M.
Weather: Broken stratus fractus, broken stratocumulus,
overcast nimbostratus, few lower stratus fractus all quadrants
Temperature: 72F; Dew Point: 72F; Relative Humidity: 100%
Wind: Estimated S @ 20G30 kts, peak wind S 39mph at 9:36 A.M.
Sea-level pressure: 1003.3 mb; 29.63 in. Hg: falling, then more slowly
Visibility: 30 miles, lower WNW-NNE, thin fog
3-hr Precip: 0.33 inches
BHO SA 1455 E10 BKN 20 BKN 35 OVC 30 033/72/72/1920G30/963/
FEW LWR STFRA ALQDS THN F ALQDS VIRGA DSNT WSW-N VSBY LWR WNW-NNE
RW-E43 PK WND 1834/36/ 8/72/ 56026 6033/

1 P.M.
Weather: Broken cumulus, broken altocumulus, few towering cumulus
distant W, few cumulus fractus all quadrants
Temperature: 78F; Dew Point: 73F; Relative Humidity: 86%
Wind: SW @ 5 kts, wind light and variable
Sea-level pressure: 1001.4mb; 29.57 in. Hg: falling, then more rapidly
Visibility: 40 miles
6-hr Max temp: 80F
6-hr Min temp: 72F
6-hr Precip: 0.47 inches
BHO SA 1755 E30 BKN 120 BKN 40 014/78/73/2205/957/ FEW TCU DSNT W
FEW CUFRA ALQDS WND L/V/ 8/260 58019 6047/ 10080 20072

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SUMMARY FOR MONDAY, AUGUST 7, 2023

TEMPERATURE (DEGREES F)
MAX…….72   NORMAL…..81
MIN…….65   NORMAL…..64
MEAN……69   NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-4
TOTAL DEPARTURE FOR THE MONTH…………………-25 [-3.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON……………0  DEPARTURE……..-9
TOTAL HEATING UNITS LAST SEASON TO DATE……….0  DEPARTURE………0

COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….4  DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE MONTH……………31  DEPARTURE…….-24
TOTAL COOLING UNITS FOR THE SEASON………….453  DEPARTURE…….+11
TOTAL COOLING UNITS LAST SEASON TO DATE……..621  DEPARTURE……-168

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)……….E29 SSE   @  11:28 P.M.
VECTOR #1 (1-Sec)……….30 SSE   @  11:28 P.M.
VECTOR #2 (1-Sec)……….30 SSE   @  02:46 P.M.
DAVIS #1……………….29 SSE   @  11:28 P.M.
DAVIS #2 ………………31 S     @  01:25 P.M.
RMY #1 (Instantaneous)…..29 SSE   @  11:28 P.M.
RMY #2 (Instantaneous)…..31 SSE   @  02:46 P.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……29       @  11:28 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 SSE @  10:46 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20     @  10:24 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21     @  11:59 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 SSE @  11:30 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 SE  @  11:56 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 SSE @  10:24 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 SSE @  11:59 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20     @  10:24 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.3 SSE [294 total miles] VECTOR #1………………12.4
VECTOR #2………………13.1
DAVIS #1……………….11.9 S
DAVIS #2……………….12.7 S
RMY #1…………………11.9 S
RMY #2…………………13.2 S
RICHARDS (C5C)………….12.4

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.14 DEPARTURE…..+0.01
TOTAL PRECIPITATION FOR THE MONTH…………..0.14 DEPARTURE…..-0.79
TOTAL PRECIPITATION FOR THE YEAR…………..34.91 DEPARTURE…..+3.28

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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 The low since midnight is 69F, the daily normal low is 64F

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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