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Unusual Late Severe Weather Event Possible Tomorrow

4CAST 11162013

I assumed the last time we had a severe weather event would be our last of the season, but as usual, Iowa is known to have ever-changing weather, where you can have snow one week and severe weather the next. It looks like that first part of the saying has already been completed, but the second part is yet to come. The Storm Prediction Center in Norman, Oklahoma has posted an elevated risk of severe weather over eastern and central Iowa tomorrow. An interesting atmosphere is expected to be in place, where weak instability, strong upper-level forcing, and other ingredients will contribute to thunderstorms, possibly severe, developing across eastern Iowa.

Non-severe thunderstorms are expected to be ongoing in the morning before moving out later in the day. Highs will be mild for this time of years, ranging from the low 50’s northwest to nearly 70 southwest. Storms are expected to start firing in the evening and continue into the early morning hours on Sunday. Large hail, damaging winds, and an isolated tornado will be possible. Large hail in excess of 2″ in diameter is expected to be the primary threat with this system, unless it becomes more surface based, in which damaging winds and large hail would have better potential.

Stay tuned to the Iowa Weather Network for the latest information.