The NWS Storm Prediction Center has issued a

• Tornado Watch for portions of
  South-Central and Eastern Iowa
  Far Northwest Illinois
  Far Eastern Kansas
  Northern and West-Central Missouri
• Effective this Wednesday afternoon and evening from 335 PM
  until 900 PM CDT.
• Primary threats include…
  A couple tornadoes possible
  Scattered large hail and isolated very large hail events to 2.5
  inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY…Supercells should pose a threat for mainly large to very
large hail initially (up to 1.5-2.5 inches in diameter). With time,
upscale growth into one or more clusters should result in a greater
threat for scattered severe/damaging winds as thunderstorms move
eastward this evening. A couple of tornadoes also appear possible,
especially with any cells that can remain at least semi-discrete
into the evening hours.

The tornado watch area is approximately along and 60 statute miles
east and west of a line from 35 miles west northwest of Dubuque IA
to 55 miles south southeast of Olathe KS. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU2).

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.

&&

OTHER WATCH INFORMATION…CONTINUE…WW 119…WW 120…WW 121…

AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25035.