Tuesday, August 15, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, AUGUST 15, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0451E
SUNSET: 1846E
OVERCAST AND COOLER WITH PERIODS OF RAIN AND DRIZZLE TODAY…
We haven’t seen a weather day like this for quite some time.
Cool, breezy, and wet with onshore flow along with periods
of rain and drizzle. A weak area of low pressure is passing
to the south of the region today, giving us a bit of a
nor’easter vibe. Rainfall has been fairly healthy with 0.71″
falling for the event so far, 0.30″ of which has fallen in
the 6 hours between 7am and 1pm.
As mentioned, it’s on the cooler side today with the high for
the day occurring around midnight, otherwise it’s been holding
in the mid 60s all day.
The wind has been generally out of the east to northeast with
an average speed for the day so far has been around 9mph.
However frequent gusts over 20mph have been occurring today.
The highest gust so far has been around 28mph.
Visibility has of course been limited today with the rain,
drizzle, and fog. It has dropped from around 6 miles early
this morning to a 1/4 mile or less early this afternoon.
The maximum temperature so far today has been 70F, which is
11 degrees below the normal high for today of 81F. The minimum
temperature since midnight is 64F, which is 1 degree above
the normal low of 63F.
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Today’s Observations:
7 A.M.
Weather: Broken stratus fractus, overcast nimbostratus, light rain
Temperature: 65F; Dew Point: 65F; Relative Humidity: 100%
Wind: E @ 11G18 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling unsteadily
Visibility: 6 miles, lower SSW-NW, fog
6-hr Max temp: 70F
6-hr Min temp: 65F
24-hr Precip: 0.41 inches
BHO SA 1155 E5 BKN 30 OVC 6R-F 108/65/65/0911G18/985/
R- OCNL R VSBY LWR SSW-NW/ 8/72/ 57014 6041/ 70041 10070 20065
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain
Temperature: 65F; Dew Point: 65F; Relative Humidity: 100%
Wind: NE @ 9G19 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling, then rising
Visibility: 1/4 mile, fog
3-hr Precip: 0.21 inches
BHO SA 1455 X W2 1/4R-F 108/65/65/0509G19/985/ 8//// 55000 6021/
1 P.M.
Weather: Sky obscured, vertical visibility 100ft, light drizzle
Temperature: 64F; Dew Point: 64F; Relative Humidity: 100%
Wind: ENE @ 10G18 kts
Sea-level pressure: 1010.1 mb; 29.83 in. Hg: falling, then more rapidly
Visibility: 1/16 mile, fog
6-hr Max temp: 67F
6-hr Min temp: 64F
6-hr Precip: 0.30 inches
BHO SA 1755 X W1 1/16L-F 101/64/64/0710G18/983/ PCPN VRY LGT/
8//// 58007 6030/ 10067 20064
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SUMMARY FOR MONDAY, AUGUST 14, 2023
TEMPERATURE (DEGREES F)
MAX…….82 NORMAL…..81
MIN…….63 NORMAL…..63
MEAN……73 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+1
TOTAL DEPARTURE FOR THE MONTH…………………-12 [-1.1 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……..-3
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE…….-10
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….8 DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH……………93 DEPARTURE…….-14
TOTAL COOLING UNITS FOR THE SEASON………….515 DEPARTURE…….+22
TOTAL COOLING UNITS LAST SEASON TO DATE……..685 DEPARTURE……-170
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)……….E25 WNW @ 01:03 P.M.
VECTOR #1 (1-Sec)……….24 W @ 02:40 P.M.
VECTOR #2 (1-Sec)……….26 W @ 12:19 P.M.
DAVIS #1……………….25 W @ 01:01 P.M.
DAVIS #2 ………………24 W @ 12:18 P.M.
RMY #1 (Instantaneous)…..29 WNW @ 01:03 P.M.
RMY #2 (Instantaneous)…..26 W @ 12:19 P.M.
MERLIN…………………24 W
RICHARDS (C5C) (Inst)……25 @ 01:03 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 W @ 12:20 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 12:20 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 01:06 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 W @ 12:20 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 WNW @ 01:06 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 W @ 01:03 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 WNW @ 01:06 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 02:40 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.9 W [214 total miles]
VECTOR #1………………9.2
VECTOR #2………………9.4
DAVIS #1……………….9.4 W
DAVIS #2……………….9.3 W
RMY #1…………………8.9 W
RMY #2…………………9.3 W
RICHARDS (C5C)………….9.3
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.41 DEPARTURE…..+0.28
TOTAL PRECIPITATION FOR THE MONTH…………..1.18 DEPARTURE…..-0.65
TOTAL PRECIPITATION FOR THE YEAR…………..35.95 DEPARTURE…..+3.42
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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/…/.. 36 W VEC1 36 W RMY 38
8/12 84/61/73/+1/0.00/…/.. 26 SSW VEC1 26 SSW RMY 26
8/13 84/68/76/+4/T/…/.. 26 SSW VEC1 26 SSW RMY 27 TSTM
8/14 82/63/73/+1/T/…/.. 25 W VEC1 24 W RMY 29
8/15 The low since midnight is 64F, the daily normal low is 63F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 15
HIGH 95F IN 1928
LOW 47F IN 1964
PRECIP 1.89 INCHES IN 2011
PEAK GUST 44e MPH S IN 1941
RECORDS FOR AUGUST 16
HIGH 95F IN 1944
LOW 50F IN 1927
PRECIP 1.31 INCHES IN 1951
PEAK GUST 45e MPH N IN 1951
TODAY’S REPORT PREPARED BY: Matt Douglas
