455 AM CDT FRI APR 13 2012 National Weather Service/Des Moines

DAY ONE…TODAY AND TONIGHT: ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THROUGHOUT THE DAY TODAY. HOWEVER…NO SEVERE WEATHER IS FORECAST TODAY. ANOTHER ROUND OF THUNDERSTORMS ARE EXPECTED ACROSS SOUTHERN IOWA TONIGHT…WITH AN ISOLATED SEVERE STORM POSSIBLE. THE MAIN THREAT WILL BE LARGE HAIL.

 DAYS TWO THROUGH SEVEN…SATURDAY THROUGH THURSDAY: 

THERE IS THE POTENTIAL FOR WIDESPREAD SEVERE WEATHER SATURDAY AFTERNOON AND EVENING…WITH THE STRONGEST STORMS LIKELY LOCATED SOUTH OF INTERSTATE 80 AND WEST OF INTERSTATE 35. LARGE HAIL…DAMAGING WINDS…AND ISOLATED TORNADOES WILL ALL BE POSSIBLE. LOCALLY HEAVY RAIN IS EXPECTED WITH THESE STRONG STORMS.

ANOTHER ROUND THUNDERSTORMS IS FORECAST SUNDAY AFTERNOON…MAINLY EAST OF INTERSTATE 35. THERE IS STILL SOME UNCERTAINTY WITH THE AMOUNT OF SEVERITY AT THIS TIME…BUT STRONG WINDS AND LARGE HAIL CANNOT BE RULE OUT.

SPOTTER INFORMATION STATEMENT… 

SPOTTER ACTIVATION WILL LIKELY BE NEEDED SATURDAY AFTERNOON INTO SATURDAY NIGHT…AND POSSIBLE AGAIN ON SUNDAY.