Tornado Warning Issued for Southwestern Delaware County, Iowa
This alert is no longer in effect.
NOAA issued it on August 11, 2026, 13 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Tornado Warning is in effect for southwestern Delaware County in northeastern Iowa until 9:45 PM CDT on August 10.
Read this weather record in 30 seconds
- Record type
- Tornado Warning
- Affected area
- Northeastern Iowa
- Issued
- August 11, 2026
- Issuing authority
- NWS Quad Cities IA IL
Tornado warnings are short-window notices for the named area. The issuing office is the authority on whether the warning remains active or has been replaced.
Record status: historical. It was issued 13 days ago; use the issuing agency's live warning service for current conditions in Northeastern Iowa.
Alert Details
Tornado Warning issued by NWS Quad Cities IA IL. Effective from 9:02 PM CDT August 10 until 9:45 PM CDT August 10. Severity: Extreme. Certainty: Observed. Urgency: Immediate.
Affected Areas
Southwestern Delaware County in northeastern Iowa, including the area near Ryan (8 miles south of Manchester).
What You Should Do
TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.
Expected Conditions
A severe thunderstorm capable of producing a tornado was located over Ryan and is nearly stationary. Radar indicated rotation. Hazard: Tornado. Flying debris will be dangerous. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. Max hail size up to 0.75 inches.
Timeline
Alert issued and effective at 9:02 PM CDT August 10. Expires and ends at 9:45 PM CDT August 10.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,053 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 11, 2026.
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