Wednesday, August 16, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, AUGUST 16, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0452E
SUNSET: 1844E
ANOTHER OVERCAST AND COOL DAY WITH INTERMITTENT LIGHT DRIZZLE…
Today is another day in which no sunshine has been recorded,
at least so far. Overcast skies have dominated with intermittent
patches of light drizzle occurring since early this morning.
With the cloud cover and continued onshore flow, the temperature
has once again been held in the mid to upper 60s so far. As a
matter of fact, there has not been much range between the high
and low, with the difference so far only 4 degrees.
The wind has been light and gradually backing from the east-
southeast to north-northeast with an average speed for the day
of only around 6mph.
Visibility has of course been limited today with the drizzle and
thin fog this morning. It’s generally been variable with views
of 15 miles or less through the morning hours, but has improved
to around 30 miles early this afternoon.
The maximum temperature so far today has been 68F, which is
12 degrees below the normal high for today of 80F. 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 stratus
Temperature: 64F; Dew Point: 64F; Relative Humidity: 97%
Wind: ESE @ 9 kts
Sea-level pressure: 1015.0 mb; 29.97 in. Hg: rising, then more slowly
Visibility: 15 miles, 6 miles SSW-WSW, 10 miles N, 20 miles NW and NE-ENE
6-hr Max temp: 64F
6-hr Min temp: 64F
24-hr Precip: 0.29 inches
BHO SA 1155 E5 BKN 15 OVC 15 150/64/64/1109/997/ FEW LWR STFRA ALQDS
THN F ALQDS L-B02E40 VSBY 6 SSW-WSW 10 N 20 NW AND NE-ENE/
8/6// 51018 6000/ 70029 10064 20064
10 A.M.
Weather: Overcast stratus, very light intermittent drizzle
Temperature: 66F; Dew Point: 64F; Relative Humidity: 95%
Wind: E @ 3 kts, wind light
Sea-level pressure: 1015.8 mb; 30.00 in. Hg: falling, then rising
Visibility: 15 miles, 6 miles W-NNE, thin fog
3-hr Precip: Trace
BHO SA 1455 E6 OVC 15L- 158/66/64/1003/000/ THN F ALQDS INTMT L-
PCPN VRY LGT VSBY 6 W-NNE WND LGT/ 8/6// 53008 6000/
1 P.M.
Weather: Broken stratus fractus, overcast stratus
Temperature: 68F; Dew Point: 64F; Relative Humidity: 88%
Wind: NE @ 5 kts, wind light
Sea-level pressure: 1015.8 mb; 30.00 in. Hg: rising, then falling
Visibility: 30 miles
6-hr Max temp: 68F
6-hr Min temp: 64F
6-hr Precip: Trace
BHO SA 1755 E7 BKN 15 OVC 30 158/68/64/0405/000/ WND LGT/
8/6// 50000 6000/ 10068 20064
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SUMMARY FOR TUESDAY, AUGUST 15, 2023
TEMPERATURE (DEGREES F)
MAX…….70 NORMAL…..81
MIN…….64 NORMAL…..63
MEAN……67 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-5
TOTAL DEPARTURE FOR THE MONTH…………………-17 [-1.3 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…………….2 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE MONTH……………95 DEPARTURE…….-19
TOTAL COOLING UNITS FOR THE SEASON………….517 DEPARTURE…….+17
TOTAL COOLING UNITS LAST SEASON TO DATE……..692 DEPARTURE……-175
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)……….E28 NE @ 10:07 A.M.
VECTOR #1 (1-Sec)……….27 NE @ 10:10 A.M.
VECTOR #2 (1-Sec)……….29 NE @ 10:07 A.M.
DAVIS #1……………….26 ENE @ 10:10 A.M.
DAVIS #2 ………………26 ENE @ 10:21 A.M.
RMY #1 (Instantaneous)…..28 NE @ 10:21 A.M.
RMY #2 (Instantaneous)…..29 NE @ 10:07 A.M.
MERLIN…………………26 NE
RICHARDS (C5C) (Inst)……27 @ 10:21 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 NE @ 10:33 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 @ 10:27 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 10:27 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 E @ 08:21 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 ENE @ 10:28 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 E @ 08:11 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 NE @ 10:27 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 08:21 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.3 ENE [199 total miles]
VECTOR #1………………8.1
VECTOR #2………………8.9
DAVIS #1……………….8.8 E
DAVIS #2……………….8.7 E
RMY #1…………………8.4 ENE
RMY #2…………………8.7 E
RICHARDS (C5C)………….8.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.29 DEPARTURE…..+0.16
TOTAL PRECIPITATION FOR THE MONTH…………..1.47 DEPARTURE…..-0.49
TOTAL PRECIPITATION FOR THE YEAR…………..36.24 DEPARTURE…..+3.58
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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/+0/0.07/810/96 36 W VEC1 36 W RMY 38
8/12 84/61/73/+1/0.00/733/87 26 SSW VEC1 26 SSW RMY 26
8/13 84/68/76/+4/0.07/629/75 26 SSW VEC1 26 SSW RMY 27 TSTM
8/14 82/63/73/+1/T/536/64 25 W VEC1 24 W RMY 29
8/15 70/64/67/-5/0.70/000/00 28 NE VEC1 27 NE RMY 28
8/16 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 16
HIGH 95F IN 1944
LOW 50F IN 1927
PRECIP 1.31 INCHES IN 1951
PEAK GUST 45e MPH N IN 1951
RECORDS FOR AUGUST 17
HIGH 97F IN 1944
LOW 48F IN 1902
PRECIP 2.17 INCHES IN 1998
PEAK GUST 50e MPH SSW IN 1952, 50 MPH WNW IN 1962
TODAY’S REPORT PREPARED BY: Matt Douglas
