NWS Text Products Please visit this dedicated page for information about the IEM's text product archives.

You will need to rename the world file to match the filename of the RADAR layer before loading into your GIS. You may also be interested in the conversion of color index values to dBZ and …

GIS Web-Mapping Apps: These applications utilize the NEXRAD mosiacs generated by the IEM. Iowa RADAR comparisons Current/Archived Mosaic Loop Nationwide Weather Warnings. …

The services mentioned on this page provide access to products that contain data from one RADAR site for one level3 product at one volume scan time! The archive for these products …

About IEM One IEM One is an interactive weather data visualization tool that provides access to radar imagery and weather warnings. Exit to IEM Homepage Recent Changes 26 July 2025: …

Jan 13, 2004 · Each NEXRAD site reports the value for a different timespan. Basically, once the radar detects rain, it will begin to accumulate the rainfall in the NTP product. Once it stops …

Warning geography: Short term warnings (SVR,TOR,SMW) have a storm based and county geography associated with them. You can pick which or both to display: Warnings Valid at: 26 …

2 days ago · The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on …

Download Archived NWS Warnings Generate a GIS shapefile of weather warnings for a time period of your choice! Summary of Polygon Sizes View storm based warning size summary …

This application allows you to search the IEM's archive of NWS WWA products. Our archive is not complete, but there are no known holes since 12 November 2005. This archive is of those …