Today looks to be a very warm day with a high temperature expected to reach 100 degrees for Des Moines! If this happens, it would be the first time since 2006 for the site. The featured chart presents the frequency of other sites in the Midwest hitting 100 degrees on the same day Des Moines does. Des Moines itself shows up on the chart as 100% for illustrative purposes. The general pattern is rather clear with a southwest to northeast oriented axis of higher frequencies (more likely that locations to Des Moines southwest will also be above 100 as well). This region is a source of hot and dry air for Iowa, so it makes sense that it would also be associated with the warmest temperatures. The air mass arriving into Iowa has been destroying June and even all time record high temperatures over the plains states. Is Iowa next?

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Tags:   100