From NWS:
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Eastern Arkansas
Southern Illinois
Southwest Indiana
Western Kentucky
Southeast Missouri
Northwest Mississippi
West Tennessee
* Effective this Wednesday morning and afternoon from 840 AM
until 400 PM CDT.
* Primary threats include...
A few tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
SUMMARY...A line of strong to severe thunderstorms will track
eastward across the watch area through the day, with a few
supercells and bowing line segments possible. Damaging winds are
the main threat, but a few tornadoes are also possible.
The tornado watch area is approximately along and 85 statute miles
east and west of a line from 15 miles east northeast of Mount Vernon
IL to 55 miles west southwest of Monticello AR. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.