An increase in humidity along with very warm temperatures helped to fire afternoon thunderstorms over Iowa on Monday. Most of these storms stayed below severe levels (less than 58 MPH gusts and one inch hail). The National Weather Service issued a number of Special Weather Statements (abbreviated SPS) to cover these sub-severe storms. The NWS SPS product can be issued for a specific polygon region to highlight a sub-county region under the highest threat from the storm. The featured map presents an IEM accounting of the number of NWS issued SPS products containing a polygon on Monday. The IEM offers a number of tools for these SPS products, including a GIS Download, a search tool, and the raw text which can be downloaded in bulk as well.

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Tags:   sps