Tuesday, August 27, 2019

| August 27, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 27, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

INCREASING CLOUDS WITH SLIGHTLY WARMER
WEATHER ATOP GREAT BLUE HILL….

We observed a good visibility of 70 miles
throughout the day. Skies became cloudier
as the day went on, becoming completely
overcast after 1 P.M. Wind was light and
southerly, with a max gust so far of 14
mph. The high so far today is 77F, a degree below
the daily normal maximum of 78F. The low since
midnight is 54F, 6 degrees below the average
daily minimum of 60F.

Today’s Observations:

7 A.M.
Weather: Broken cirrus, few distant cumulus NE-SE-S,
few distant altocumulus WNW
Temperature: 59F; Dew Point: 52F; Wind: W at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.14 ins. Hg, falling
Visibility: 75 miles, thin smoke layer
6-hr Max temp: 59F
6-hr Min temp: 54F
24-hr Precip: 0.00 ins.
BHO SA 1155 E250 BKN 75 205/59/52/2604/014/ FEW
DSNT CU NE-SE-S FEW DSNT AC WNW THN K LYR ALQDS
WND L/V/ 8/182 56001 10059 20054

10 A.M.
Weather: Broken altocumulus and cirrus, few
distant cumulus E-SE
Temperature: 68F; Dew Point: 50F; Wind: S at 2 kts,
Wind: Light and variable
Sea-level pressure: 30.13 ins. Hg, falling steadily
Visibility: 65 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E130 BKN 250 BKN 65 201/68/50/1902/013/
FEW DSNT CU E-SE WND L/V/ 8/182 58004

1 P.M.
Weather: Broken altocumulus and cirrus
Temperature: 75F; Dew Point: 51F; Wind: SE at 6 kts,
Wind: Light
Sea-level pressure: 30.08 ins. Hg, falling
Visibility: 65 miles
6-hr Max temp: 77F
6-hr Min temp: 59F
6-hr Precip: 0.00 ins.
BHO SA 1755 E140 BKN 250 BKN 65 185/75/51/1406/008/
WND LGT/ 8/082 57016 10077 20059

SUMMARY FOR MONDAY, AUGUST 26, 2019

TEMPERATURE (DEGREES F)
MAX…..71   NORMAL…..78
MIN…..51   NORMAL…..61
MEAN….61   NORMAL…..69

DEPARTURE FROM 30-YEAR NORMAL………………….-8
TOTAL DEPARTURE FOR THE MONTH…………………+22 [+0.6 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……..+22
TOTAL COOLING UNITS FOR THE SEASON…………597   DEPARTURE……..+82
TOTAL COOLING UNITS LAST SEASON TO DATE…….689   DEPARTURE……..-82

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..25 NE  AT  9:35 A.M.
AERO…………………….21 NE  AT 10:00 A.M.
ASOS…………………….25 NE  AT  9:36 P.M.
DAVIS……………………25 ENE AT  9:35 P.M. RMY 25
FASTEST MILE FOR YESTERDAY………………….17 NE  AT 11:11 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….18 ENE AT 11:21 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………18 ENE AT  9:25 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..8.3 NE
ASOS…………………..9.0
DAVIS………………….8.9 NE [55 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……-2.47
ASOS…………..0.97
TOTAL PRECIPITATION FOR THE YEAR……….36.34  DEPARTURE……+1.86
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/…./720/85               32 NW  AERO 28 NW  RMY 28
8/11  78/55/67/-4/0.00/734/87               28 W   AERO 25 W   RMY 28
8/12  82/60/71/0/0.00/749/89                25 W   AERO 23 W   RMY 26
8/13  77/66/72/+1/0.02/059/07               25 W   AERO 24 WSW RMY 24
8/14  75/62/69/-2/…./452/54               24 ENE AERO 22 ENE RMY 22
8/15  77/59/68/-3/…./568/68               17 ESE AERO 15 SSE RMY 16
8/16  78/61/70/-1/…./732/88                20 E   AERO 17 ESE RMY 18
8/17  78/67/73/+2/…./099/12                14 SE  AERO 15 SE  RMY 15
8/18  88/70/79/+8/…./529/64               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  66/56/61/-8/0.00/…/..               31 ENE AERO 25 ENE RMY 29
8/26  71/51/61/-8/0.00/…/..               25 NE  AERO 21 NE  RMY 25

8/27 Low temp since midnight is 54F; normal low is 60F

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

RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983

RECORDS FOR AUGUST 28
HIGH 95F IN 1948
LOW 43F IN 1885
PRECIP 1.80 INCHES IN 1922
PEAK GUST 87 MPH SSE IN 1971 (DORIA)

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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