Thursday, August 22, 2019

| August 22, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, AUGUST 22, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

HOT, HAZY AND HUMID WITH CONDITIONS
IMPROVING IN THE AFTERNOON….

Visibility was limited throughout the day,
with 35 miles on average due to a distant haze.
Conditions were increasingly cloudy, with some
moderate cumulus clouds being seen during the 1 P.M.
observation. Wind shifted from S to W, with a peak
gust so far of 18 mph. The high so far today
is 88F, 9 degrees above the daily normal maximum
of 79F. The low since midnight is 68F, 7 degrees
above the average daily minimum of 61F.

Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 72F; Dew Point: 72F; Wind: S at 8 kts
Sea-level pressure: 29.87 ins. Hg, rising, then more rapidly
Visibility: 1/2 mile, fog
6-hr Max temp: 72F
6-hr Min temp: 68F
24-hr Precip: 0.12 ins.
BHO SA 1155 W2 X 1/2F 114/72/72/1908/987/ 8////
70012 53010 10072 20068

10 A.M.
Weather: Scattered cumulus, broken altocumulus
Temperature: 80F; Dew Point: 75F; Wind: SSW at 6 kts,
Wind: Light
Sea-level pressure: 29.87 ins. Hg, steady
Visibility: 35 miles and hazy, with 20 miles NW-NE
3-hr Precip: 0.00 ins.
BHO SA 1455 6 SCT E120 BKN 35 114/80/75/2106/987/ VSBY
NW-NE 20 HAZY WND LGT/ 8/870 53000

1 P.M.
Weather: Broken moderate cumulus and cirrostratus
Temperature: 88F; Dew Point: 71F; Wind: W at 9 kts
Sea-level pressure: 29.83 ins. Hg, falling steadily
Visibility: 35 miles, hazy
6-hr Max temp: 88F
6-hr Min temp: 72F
6-hr Precip: 0.00 ins.
BHO SA 1755 E30 BKN 250 BKN 35 103/88/71/2709/983/ HAZY/
8/208 56011 10088 20072

SUMMARY FOR WEDNESDAY, AUGUST 21, 2019

TEMPERATURE (DEGREES F)
MAX…..85   NORMAL…..79
MIN…..68   NORMAL…..61
MEAN….77   NORMAL…..70

DEPARTURE FROM 30-YEAR NORMAL………………….+7
TOTAL DEPARTURE FOR THE MONTH…………………+37 [+1.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..12   DEPARTURE………+7
TOTAL COOLING UNITS FOR THE MONTH………….169   DEPARTURE……..+31
TOTAL COOLING UNITS FOR THE SEASON…………580   DEPARTURE……..+91
TOTAL COOLING UNITS LAST SEASON TO DATE…….663   DEPARTURE……..-83

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..33 SW  AT  9:11 P.M.
AERO…………………….32 SW  AT  9:09 P.M.
ASOS…………………….33 SSW AT  8:29 P.M.
DAVIS……………………34 WSW AT  9:10 P.M. RMY 33
FASTEST MILE FOR YESTERDAY………………….25 SW  AT  9:12 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….24 SW  AT  9:28 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………24 SW  AT  9:28 P.M.
AVERAGE WIND SPEED AND DIRECTION………….13.0 S
ASOS………………….12.7
DAVIS…………………12.3 SSW [201 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.12  DEPARTURE……-0.01
ASOS…………..0.09
TOTAL PRECIPITATION FOR THE MONTH……….0.98  DEPARTURE……-1.91
ASOS…………..0.94
TOTAL PRECIPITATION FOR THE YEAR……….36.30  DEPARTURE……+2.42
ASOS………….36.21

PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

8/01  84/66/75/+3/0.00/755/87               18 NNW AERO 20 NW  RMY 17
8/02  83/61/72/0/0.00/804/93                18 WSW AERO 18 WSW RMY 18
8/03  84/66/75/+3/0.00/302/35               25 SW  AERO 26 SW  RMY 25
8/04  83/66/75/+3/0.00/732/85               21 NE  AERO 23 SW  RMY 25
8/05  81/58/70/-2/0.00/842/98               20 S   AERO 18 S   RMY 19
8/06  79/63/71/-1/0.00/282/33               15 S   AERO 14 S   RMY 17
8/07  82/66/74/+2/…./367/43               32 SSW AERO 35 SSW RMY 35
8/08  84/67/76/+4/…./588/69               30 SW  AERO 24 WNW RMY 29
8/09  82/63/73/+1/…./815/96               28 NW  AERO 25 NW  RMY 26
8/10  78/59/69/-2/…./669/79               32 NW  AERO 28 NW  RMY 28
8/11  78/55/67/-4/0.00/…/..               28 W   AERO 25 W   RMY 28
8/12  82/60/71/0/0.00/…/..                25 W   AERO 23 W   RMY 26
8/13  77/66/72/+1/0.02/…/..               25 W   AERO 24 WSW RMY 24
8/14  75/62/69/-2/…./…/..               24 ENE AERO 22 ENE RMY 22
8/15  77/59/68/-3/…./…/..               17 ESE AERO 15 SSE RMY 16
8/16  78/61/70/-1/…./../..                20 E   AERO 17 ESE RMY 18
8/17  78/67/73/+2/…./../..                14 SE  AERO 15 SE  RMY 15
8/18  88/70/79/+8/…./…/..               18 SSW AERO 18 SSW RMY 21
8/19  92/69/81/+11/…./…/..              25 WSW AERO 23 WSW RMY 25
8/20  87/66/77/+7/…./…/..               18 W   AERO 14 WSW RMY N/A
8/21  85/68/77/+7/0.12/…/..               33 SW  AERO 32 SW  RMY 33

8/22 Low temp since midnight is 68F; normal low is 62F

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 44 MPH SSW IN 1987

RECORDS FOR AUGUST 23
HIGH 88F IN 1918, 1947, 1949, 1996
LOW 45F IN 1923
PRECIP 2.09 INCHES IN 2010
PEAK GUST 60e MPH NW IN 1940

TODAY’S REPORT PREPARED BY: Benjamin Turner and Matt Douglas

Category: Daily Discussions

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