Tornado Warning — Johnson, IA; Linn, IA

Tornado Warning — Johnson, IA; Linn, IA was recorded by Global Incident Tracker on Wednesday, 9 September 2026 at 01:54 UTC. The event is classified as a tornado incident with a severity rating of Extreme, and was detected through the US National Weather Service (NWS).

Tornado Warning issued September 8 at 8:54PM CDT until September 8 at 9:15PM CDT by NWS Quad Cities IA IL At 854 PM CDT, a severe thunderstorm capable of producing a tornado was located near Cedar Rapids Municipal Airport, or near Cedar Rapids, moving northeast at 45 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. This dangerous storm will be near... Cedar Rapids, Marion, Bertram, Marion Airport, and Wanatee Park around 900 PM CDT. Springville and Paralta around 905 PM CDT. This includes Interstate 380 between mile markers 10 and 23.

Where this happened

The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.

Approximate coordinates of the reported event are 41.956°, -91.614°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.

Understanding tornado events

Violently rotating columns of air producing concentrated destruction. Tornado intensity is rated on the Enhanced Fujita (EF) scale from observed damage. Because warning times are typically measured in minutes, the difference between injury and safety is usually whether people can reach an interior room on the lowest floor.

How severity is rated

Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Extreme. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.

Safety guidance for tornado situations

• Go to the lowest floor, in an interior room, away from windows — a basement or reinforced room is best.
• Cover your head and neck; most injuries come from flying debris.
• A vehicle or mobile home is not shelter; leave for a sturdy structure if there is time.
• Keep a weather-alert app or radio active during watch periods.
• Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.

Data and verification

This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.

Keep watching the situation on our live world incident map, browse every tornadoes we track on the Tornado tracker, or see today's global picture on the incidents today page.

Timeline and sources

1. 9 Sep 2026, 02:01 UTC · received · event time 9 Sep 2026, 01:54 UTC
   First report Official warning

   First recorded from U.S. National Weather Service.

   U.S. National Weather Service ↗

Times are when this site received each report, in UTC; the event time is shown where the source gave one. Copies of one syndicated story count as one report.

Conditions at the time