The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.

IEM Daily Feature

Day 2 Moderates


Posted: 21 May 2024 05:30 AM, Views: 1583
Tags:   spc   moderate  
The Storm Prediction Center issued a Day 2 Moderate Risk yesterday for most of southeastern Iowa on Tuesday. The featured map presents a heat map of such risks expressed as average number of days per year at such a threshold. Much of Iowa is shown around the one day per year frequency with the highest frequencies found over Arkansas into Mississippi. The afternoon storm threat is conditional on how the morning storms play out and what surface air mass boundaries they create for later afternoon storms to deal with. All of the severe weather threats of large hail, damaging winds, and tornadoes are expected throughout much of the day and into the evening.
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