Sunday, August 25, 2019

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 25, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

BREEZY AND COOL WITH INCREASING CLOUDS IN
THE AFTERNOON….

We observed significant wind in comparison to
the last few days, with a peak gust so far of
35 mph. The highest visibility seen today was
80 miles at the 10 A.M. observation. Wind has
been northeasterly for the majority of the day,
resulting in a significant sea breeze. This has
kept temperatures well below seasonal averages.
The high so far today is 66F, 12 degrees below
the daily normal maximum of 78F. The low since
midnight is 57F, 7 degrees below the average daily
minimum of 61F.

Today’s Observations:

7 A.M.
Weather: Scattered cumulus, virga offshore
Temperature: 61F; Dew Point: 56F; Wind: NNE at 10 kts
Sea-level pressure: 30.32 ins. Hg, rising, then more rapidly
Visibility: 45 miles, except 35 miles ENE-SE due to fog
6-hr Max temp: 61F
6-hr Min temp: 57F
24-hr Precip: 0.00 ins.
BHO SA 1155 45 SCT 60 269/61/56/0310/032/ DSNT FG VSBY 35
ENE-SE VIRGA OFFSHR/ 8/200 53011 10061 20057

10 A.M.
Weather: Broken cumulus
Temperature: 63F; Dew Point: 57F; Wind: NE at 10G24 kts,
Peak wind: 35 mph (30 kts) NE at 9:48 A.M.
Sea-level pressure: 30.34 ins. Hg, rising steadily
Visibility: 80 miles, except for 35 miles ENE-S due
to fog
3-hr Precip: 0.00 ins.
BHO SA 1455 E35 BKN 80 275/63/57/0510G24/034/ DSNT
FG VSBY 35 ENE-S PK WND 0530/48/ 8/800 51006

1 P.M.
Weather: Broken cumulus
Temperature: 65F; Dew Point: 55F; Wind: ENE at 14G25 kts,
Peak wind: 30 mph (26 kts) ENE at 12:12 P.M.
Sea-level pressure: 30.34 ins. Hg, rising then falling
Visibility: 60 miles
6-hr Max temp: 66F
6-hr Min temp: 61F
6-hr Precip: 0.00 ins.
BHO SA 1755 E30 BKN 60 274/65/55/0614G25/034/ PK WND
0626/12/ 8/800 58001 10066 20061

SUMMARY FOR SATURDAY, AUGUST 24, 2019

TEMPERATURE (DEGREES F)
MAX…..72   NORMAL…..78
MIN…..55   NORMAL…..61
MEAN….64   NORMAL…..70

DEPARTURE FROM 30-YEAR NORMAL………………….-6
TOTAL DEPARTURE FOR THE MONTH…………………+38 [+1.4 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE………-5
TOTAL COOLING UNITS FOR THE MONTH………….186   DEPARTURE……..+32
TOTAL COOLING UNITS FOR THE SEASON…………597   DEPARTURE……..+92
TOTAL COOLING UNITS LAST SEASON TO DATE…….679   DEPARTURE……..-82

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..25 ENE AT  1:44 P.M.
AERO…………………….21 ENE AT  3:08 P.M.
ASOS…………………….25 E   AT  1:44 P.M.
DAVIS……………………26 E   AT  1:31 P.M. RMY 22
FASTEST MILE FOR YESTERDAY………………….18 ENE AT  1:18 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….17 ENE AT  1:52 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………18 E   AT  1:36 P.M.
AVERAGE WIND SPEED AND DIRECTION………….10.1 NE
ASOS………………….10.4
DAVIS…………………10.7 ENE [48 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.02  DEPARTURE……-2.24
ASOS…………..0.97
TOTAL PRECIPITATION FOR THE YEAR……….36.34  DEPARTURE……+2.09
ASOS………….36.25

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  88/68/78/+8/0.00/…/..               25 W   AERO 21 W   RMY 26
8/23  78/60/69/-1/0.04/…/..               23 N   AERO 18 N   RMY 24
8/24  72/55/64/-6/0.00/…/..               25 ENE AERO 21 ENE RMY 22

8/25 Low temp since midnight is 57F; normal low is 61F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR AUGUST 25
HIGH 93F IN 1947, 1948, 2007
LOW 41F IN 1940
PRECIP 2.69 INCHES IN 2010
PEAK GUST 60e MPH SSW IN 1941

RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947

TODAY’S REPORT PREPARED BY: Benjamin Turner