Past IEM Features tagged: tornadoes

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First Tornado Warning

03 Apr 2014 05:40 AM
While Iowa got its first tornado of the year last week (brief and weak one near Osceola), we have yet to see a tornado warning. The featured map presents the average date that a NWS office issues their first Tornado Warning of the year. You'll want to click the image for a better view. The general pattern is a progression from south to north as the moisture rich and unstable air from the Gulf of Mexico works its way north. Iowa's tornado season gets started in April. Tornadoes are expected today, but the main threat is to our south.

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Tags:   tornadoes