The first major and widespread severe weather day of the year happened on Thursday with large hail and tornadoes reported from Texas to Ohio. The featured chart presents an unofficial IEM accounting of the number of Severe Thunderstorm, Tornado, and Flash Flood Warnings active per minute during Thursday. The maximum of 16 simultaneous Tornado Warnings ranked in the top 10 largest for March events since 1986. The chart nicely illustrates the transition that often happens during most severe weather events as night time boundary layer stabilization leads to a decreased severe thunderstorm and tornado threat, while the flash flooding threat increases as rainfall totals pile up and thunderstorms train over the same locations.

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