A line of weak thunderstorms entered into north central Iowa Wednesday evening. This line of storms was able to produce brief funnels, and weak landspouts, prompting the National Weather Service in Des Moines to issue a tornado warning.
However, this year has been the most inactive severe weather season in the Des Moines National Weather Services forecasting area. The National Weather Service in Des Moines has only issued 115 severe thunderstorm and tornado warnings this year. Last year is not far behind. Only 150 warnings were issued last year. Since 2003, on average 315 warnings are issued each year.
While July is typically quite for severe weather, we typically see a late severe weather season as the temperatures begin to change in September and October.