By mid-May, severe weather season is typically well underway for Iowa. This year has been a bit different with cool temperatures and limited amounts of surface moisture which both limit available instability for severe thunderstorms to thrive. The featured chart displays the year to date accumulated Tornado and Severe Thunderstorm Warnings for the state of Iowa since 2008. This year's total is the lowest shown by a considerable margin. The near term forecast has an increase in heat and humidity, so also an increasing chance of thunderstorms.

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Good = 11
Bad = 0
Abstain = 1

Tags:   nws