RADAR and Satellite Data
This page collects current IEM radar mosaics, raw NEXRAD Level II data sources, GIS web mapping tools, and satellite archive links in one place.
Use these links to move between realtime viewing tools, archived mosaic products, and external raw-data services.
Mosaic Products
The IEM generates mosaics from NWS NEXRAD data. These mosaics drive several realtime and archive products across the site.
- IEM One
Modern interactive map interface. - Midwest mosaic with warnings
- CONUS mosaic
- Convective Watches Overview
- Yesterday (GMT) CONUS max dBZ mosaic
- Yesterday (GMT) Iowa max dBZ mosaic
Raw Level II Data
NWS-operated WSR-88D radars publish products in multiple formats. Level II data preserves high-resolution information before much of the processing applied to Level III products.
GIS Web Mapping Apps
These applications use IEM-generated NEXRAD mosaics for archive review and operational situational awareness.
- Iowa RADAR comparisons
- Current and archived mosaic loop
- Nationwide Weather Warnings
Optimized for NWS WFO workflows. - Storm Prediction Center watches since 1997
- VTEC product browser
Satellite Products
Satellite browsing remains separate from the radar applications, but this archive pairs well with the mosaic tools above.