The NWS Storm Prediction Center has issued a

• Tornado Watch for portions of
  Eastern Iowa
  Extreme Northwest Illinois
  East-Central Kansas
  Northern Missouri
• Effective this Friday night and Saturday morning from 815 PM
  until 400 AM CST.
• Primary threats include…
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered large hail and isolated very large hail events to 2
  inches in diameter likely
  Scattered damaging wind gusts to 70 mph likely

SUMMARY…Multiple clusters of thunderstorms are increasing in
coverage this evening across parts of Iowa and Missouri. These
storms are forming in a strongly sheared environment that could
support the development of a few supercells capable of tornadoes,
hail, and damaging wind gusts.

The tornado watch area is approximately along and 60 statute miles
east and west of a line from 45 miles north of Cedar Rapids IA to 45
miles east southeast of Kansas City MO. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU9).

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 15…WW 16…WW 17…WW
18…

AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.

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