Monday, August 10, 2020

SPC Severe Thunderstorm Watch 430

WW 430 SEVERE TSTM IL IN KY MO 102330Z - 110500Z
WW 0430 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 430
NWS Storm Prediction Center Norman OK
630 PM CDT Mon Aug 10 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southern Illinois
  Southern Indiana
  Northern and western Kentucky
  Southeastern Missouri

* Effective this Monday night from 630 PM until Midnight CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...An extensive line of thunderstorms with a history of
damaging winds will continue to move southeastward through late
evening and early tonight.  The storm environment should remain
favorable for occasional downbursts with damaging outflow in the
line of storms.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 35 miles west of Cape
Girardeau MO to 60 miles north northeast of Louisville KY. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 427...WW 428...WW 429...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
32025.

...Thompson

Read more

from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0430.html

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