Tuesday, August 22, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, AUGUST 22, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0459E
SUNSET: 1835E
MOSTLY CLEAR SKIES WITH DRY AIR GIVES WAY FOR LOWER DEW POINTS
AND MORE FAVORABLE CONDITIONS TODAY…
Today has been a picture perfect summer day! Mostly clear skies
and warm sunshine have been paired with breezy NNE winds cooling
the region down to bring us just below the average temperature.
Fair weather cirrus clouds have been present all day with the
occasional cumulus clouds forming with the warming by the sun.
Along with last night’s rain, a dry air mass moved into the area
giving us some reprieve from the higher dew points. Today we
have been hovering in the mid 50’s which feels considerably better
than what we experienced yesterday. Today has been an ideal day for
any outdoor activities.
We had a peak gust late last night from the ENE and it stayed
rather breezy through the overnight hours, with a peak gust today
so far around 29mph just after 2am. Wind has mainly been out of the
NE and NNE directions today with an average of about 10mph.
Visibility has been in the 50-60 mile range today, thanks in part
to the lower dew points and relative humidity.
The maximum temperature so far today has been 74F, which is
6 degrees below the normal high of 80F. The minimum temperature
since midnight is 59F, which is 3 degrees below the normal low
of 62F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus E-SE-S, few cirrus all quadrants
Temperature: 62F; Dew Point: 56F; Relative Humidity: 79%
Wind: N @ 8 kts
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: rising, then more
slowly
Visibility: 50 miles
6-hr Max temp: 64F
6-hr Min temp: 59F
24-hr Precip: 0.85 inches
BHO SA 1155 CLR 50 189/62/56/0108/009/ FEW AC E-SE-S FEW CI ALQDS/
8/051 51017 70085 10064 20059
10 A.M.
Weather: Clear, few cumulus distant S-W-N, few cirrus all quadrants
Temperature: 69F; Dew Point: 56F; Relative Humidity: 62%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1019.8 mb; 30.11 in. Hg: rising steadily
Visibility: 50 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 50 198/69/56/0306/011/ FEW DSNT CU S-W-N FEW CI ALQDS
WND LGT/ 8/101 52009
1 P.M.
Weather: Clear, few cumulus distant SW-W-N, few cirrus SSE-S-NW
Temperature: 73F; Dew Point: 53F; Relative Humidity: 49%
Wind: ENE @ 6 kts, wind light
Sea-level pressure: 1018.6 mb; 30.08 in. Hg: falling unsteadily
Visibility: 60 miles
6-hr Max temp: 74F
6-hr Min temp: 62F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 60 186/73/53/0606/008/ FEW CU DSNT SW-W-N
FEW CI SSE-S-NW WND LGT/ 8/101 57012 10074 20062
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SUMMARY FOR MONDAY, AUGUST 21, 2023
TEMPERATURE (DEGREES F)
MAX…….84 NORMAL…..80
MIN…….64 NORMAL…..62
MEAN……74 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+3
TOTAL DEPARTURE FOR THE MONTH…………………-34 [-1.4 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……..-5
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE…….-12
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….9 DEPARTURE……..+3
TOTAL COOLING UNITS FOR THE MONTH…………..116 DEPARTURE…….-38
TOTAL COOLING UNITS FOR THE SEASON………….538 DEPARTURE……..-2
TOTAL COOLING UNITS LAST SEASON TO DATE……..747 DEPARTURE……-209
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 NE @ 10:56 P.M.
VECTOR #1 (1-Sec)……….30 ENE @ 10:55 P.M.
VECTOR #2 (1-Sec)……….30 ENE @ 10:50 P.M.
DAVIS #1……………….27 NE @ 10:49 P.M.
DAVIS #2 ………………27 ENE @ 10:50 P.M.
RMY #1 (Instantaneous)…..29 ENE @ 10:55 P.M.
RMY #2 (Instantaneous)…..30 ENE @ 10:53 P.M.
MERLIN…………………27 NE
RICHARDS (C5C) (Inst)……27 @ 10:55 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL……………….19 ENE @ 10:55 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE……………18 @ 10:51 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE……………19 @ 10:51 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…………….20 ENE @ 10:56 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE…………….19 ENE @ 10:56 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE………………18 ENE @ 10:51 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE………………18 ENE @ 10:56 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……….18 @ 10:51 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……….8.2 WSW [196 total miles]
VECTOR #1………………..8.4
VECTOR #2………………..9.0
DAVIS #1…………………8.5 WNW
DAVIS #2…………………8.8 WNW
RMY #1…………………..8.5 N
RMY #2…………………..9.1 N
RICHARDS (C5C)……………8.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.85 DEPARTURE…..+0.73
TOTAL PRECIPITATION FOR THE MONTH…………..3.80 DEPARTURE…..+1.10
TOTAL PRECIPITATION FOR THE YEAR…………..38.57 DEPARTURE…..+5.17
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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 68/64/66/-6/T/000/00 18 ESE VEC1 19 ENE RMY 18
8/17 70/62/66/-6/T/116/14 15 E VEC1 14 E RMY 14
8/18 79/61/70/-1/1.48/298/36 32 W VEC1 34 W RMY 33 TSTM
8/19 72/57/65/-6/0.00/371/45 29 W VEC1 30 W RMY 30
8/20 81/59/70/-1/0.00/764/93 23 W VEC1 22 W RMY 21
8/21 84/64/74/+3/0.85/…/.. 29 NE VEC1 30 ENE RMY 29
8/22 The low since midnight is 59F, the daily normal low is 62F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 22
HIGH 90F IN 1939
LOW 42F IN 1894
PRECIP 2.28 INCHES IN 1935
PEAK GUST 47 MPH ESE IN 2021 [TROPICAL STORM HENRI]
RECORDS FOR AUGUST 23
HIGH 89F IN 2020
LOW 45F IN 1923
PRECIP 2.21 INCHES IN 2020
PEAK GUST 60e MPH NW IN 1940, 60 WNW IN 2020* [*THUNDERSTORM]
TODAY’S REPORT PREPARED BY: Amanda Joly
