IEM Daily Feature
Monday, 18 May 2020

Ottumwa Tied May Record

Posted: 18 May 2020 04:11 AM

The big hail producing storm last Thursday also dumped significant amounts of rainfall. Ottumwa received 4.43 inches and tied their all-time May record for daily precipitation. The featured chart presents the maximum daily precipitation by month. Having such extreme precipitation totals are a function of how much water the atmosphere can hold. Thus the reason such large values are confined to the warm half of the year as cold air has less capacity to hold water vapor.

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