The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Active Week Continues
Posted: 17 Apr 2026 05:30 AM, Views: 2389It has been a very active week for severe weather over Iowa. While Thursday was a very welcome break from the rough weather this week, strong thunderstorms are very likely Friday with eastern Iowa that primary target for the worst of the storms. The featured chart presents the daily number of combined Tornado and Severe Thunderstorm Warnings issued by the National Weather Service for counties within Iowa. It is likely that four days for this week will have a higher total of such warnings than any previous day so far this year!
Updated: The featured chart was regenerated to show the Friday total of 74 warnings.
Rate Feature
Previous Years' Features
2023An Average April
201710% Tornado Risk
2015Wet Weekend
2011Severe April
2006A quiet Thursday
2005Storms continue
Tipton I-80 West, IA Webcam:
Most Popular (List Apps)
1 April IEM Outage [resolved]
Posted: 2 Apr 10:55 AM
Tracking TAF Amendments
Posted: 13 Feb 10:28 AM
IEM Archival Update
Posted: 24 Sep 11:07 PM
TAF Archive Fixes
Posted: 22 Aug 7:28 AM
Website Update
Posted: 13 Jun 12:45 PM
Sign up for the Daily Bulletin
Current Website Performance:
Bandwidth: 48.8 MB/s
Total Website: 2,705 req/s
API/Data Services: 70.3 req/s
API Success: 100%
Soil Temperatures
Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.




