Tuesday was yet another very warm day this year and humidity came along for the ride this time pushing heat indices over 100 for much of Iowa. This is somewhat rare to occur in September with the last occurrence for Des Moines being back in the year 2000. The featured map is a simple analysis of computed heat indices from the primary automated weather stations in the state. All of this heat and humidity helped to fire numerous rounds of severe thunderstorms over night and into this morning.

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Tags:   2012