Sunday, August 16, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, AUGUST 16, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
ANOTHER OVERCAST AND COOL DAY WITH TRACE
AMOUNTS OF RAINFALL….
Today was overcast, with some very light drizzle
falling between 7-9 A.M. Precipitation began
again around noontime, only amounting to 0.02 ins.
by the 1 P.M. observation. Visibility was limited
to 20 miles on average due to a distant fog. Wind is
from the northeast at 15 mph, providing the summit
with a cool sea breeze. Skies are again overcast,
with a couple breaks being noticed around 11 A.M.
The high so far today is 69F, 11 degrees below the
daily normal maximum of 80F. The low since midnight
is 62F, the same as the normal minimum.
The summit of Blue Hill is reaching a drought, with
the monthly rain total being 1.87 inches below
normal. Supporting evidence is the annual rain
deficit of -3.79 inches.
Today’s Observations:
7 A.M.
Weather: Scattered stratus fractus, overcast nimbostratus
Temperature: 64F; Dew Point: 62F; Relative Humidity: 93%
Wind: ENE at 10G15 kts
Sea-level pressure: 30.08 ins. Hg: rising then steady
Visibility: 10 miles, thin fog
6-hr Max temp: 64F
6-hr Min temp: 62F
24-hr Precip: Trace
BHO SA 1155 20 SCT 120 OVC 10 187/64/62/0610G15/008/ THN
FG ALQDS/ 8/72/ 53001 10064 20062
10 A.M.
Weather: Scattered stratus fractus, overcast altocumulus
Temperature: 68F; Dew Point: 61F; Relative Humidity: 78%
Wind: ENE at 13G23 kts
Sea-level pressure: 30.09 ins. Hg: falling steadily
Visibility: 20 miles, thin fog
3-hr Precip: Trace
BHO SA 1455 25 SCT 120 OVC 20 190/68/61/0713G23/009/ THN FG
ALQDS/ 8/72/ 600// 58003
1 P.M.
Weather: Scattered stratus fractus, overcast nimbostratus,
light rain beginning within the hour
Temperature: 66F; Dew Point: 64F; Relative Humidity: 90%
Wind: E at 9G15 kts
Sea-level pressure: 30.07 ins. Hg: falling, then steady
Visibility: 9 miles, distant rainfall
6-hr Max temp: 69F
6-hr Min temp: 64F
6-hr Precip: 0.02 ins.
BHO SA 1755 20 SCT 120 OVC 9R- 182/66/64/0809G15/007/
VIRGA ALQDS R-BUKN/ 8/72/ 6002/ 55008 10069 20064
SUMMARY FOR SATURDAY, AUGUST 15, 2020
TEMPERATURE (DEGREES F)
MAX…..67 NORMAL…..80
MIN…..62 NORMAL…..62
MEAN….65 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL……………..-6
TOTAL DEPARTURE FOR THE MONTH……………..+86 [+5.5 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE…….-6
TOTAL COOLING UNITS FOR THE MONTH…………….185 DEPARTURE……+82
TOTAL COOLING UNITS FOR THE SEASON……………672 DEPARTURE…..+218
TOTAL COOLING UNITS LAST SEASON TO DATE……….513 DEPARTURE…..+159
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..33 NNE AT 6:52 A.M.
AERO…………………….32 NNE AT 7:46 A.M.
ASOS…………………….33 NE AT 6:52 A.M.
DAVIS……………………33 ENE AT 6:51 A.M
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….23 NNE AT 6:04 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….20 NNE AT 6:05 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………21 NE AT 6:49 A.M.
AVERAGE WIND SPEED AND DIRECTION…………….12.8 NE
ASOS…………………….12.4
DAVIS……………………13.0 NE [50 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….Trace DEPARTURE……-0.13
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….0.23 DEPARTURE……-1.87
ASOS…………..0.24
TOTAL PRECIPITATION FOR THE YEAR……….29.30 DEPARTURE……-3.79
ASOS………….30.05
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
08/01 87/66/77/+5/0.00/…/.. 18 S AERO 21 S RMY 19
08/02 85/69/77/+5/0.02/…/.. 36 S AERO 37 S RMY 38
08/03 91/75/83/+11/0.00/…/.. 36 WSW AERO 38 SW RMY 36
08/04 83/71/77/5/0.21/…/.. 67 SSE AERO 71 S RMY 70
08/05 90/68/79/+7/0.00/…/.. 28 SW AERO 30 SW RMY 29
08/06 84/65/75/3/0.00/…/.. 20 W AERO 17 W RMY 19
08/07 79/65/72/0/T/…/.. 16 NE AERO 16 NE RMY N/A
08/08 83/64/74/+2/0.00/…/.. 20 S AERO 20 S RMY 19
08/09 90/65/78/+6/0.00/…/.. 26 SSW AERO 26 SSW RMY 26
08/10 94/69/82/+11/0.00/…/.. 22 W AERO 20 W RMY 20
08/11 92/72/82/+11/0.00/…/.. 31 SSW AERO 35 SSW RMY 31 TSTM
08/12 93/74/84/+13/0.00/…/.. 22 SSW AERO 22 SW RMY 19
08/13 88/71/80/+9/0.00/…/.. 18 ENE AERO 18 NE RMY 18
08/14 82/67/75/+4/0.00/…/.. 23 ENE AERO 23 ENE RMY N/A
08/15 67/62/65/-6/T/…/.. 33 NNE AERO 32 NNE RMY N/A
08/16 The low since midnight is 62F, the daily normal low is 62F
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 1.47 INCHES IN 1926
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: Benjamin Turner
