IEM Daily Feature
Friday, 24 March 2017

Sub-Zero Time

Posted: 24 Mar 2017 05:34 AM

Continuing with the theme that very cold air has been difficult to come by for most of this winter season, the featured map displays IEM computed percentage of average for amount of time spent below 0 F. The general pattern this winter has been cold over the northwestern US and mild for the eastern. The blob that appears over and near Oklahoma is simply having a few more hours than a low average number of hours, so their percentage is high! Significant cold air continues to look unlikely as we'll mostly see springlike storm systems rolling by.

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