IEM Daily Feature
Tuesday, 17 September 2013

Warning Percentages

Posted: 17 Sep 2013 05:44 AM


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The featured map presents the IEM computed percent of average number of tornado and severe thunderstorm warnings issued per NWS forecast office for the year to date. The average is computed for the same year to date period over the years 2003 to 2012. Most of the Iowa forecast offices are below average for warning counts, except LaCrosse. The largest positive departures are out west with some offices 200% of average. The southeastern US is generally below average with many offices below 50%.

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