Severe Thunderstorm Warning Issued for Grundy, Marshall, Tama Counties IA
This alert is no longer in effect.
NOAA issued it on July 18, 2026, 5 weeks 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.
NWS Des Moines has issued a Severe Thunderstorm Warning for parts of central Iowa until 6:30 AM CDT June 17, with 60 mph winds and penny-size hail observed.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Central Iowa
- Issued
- July 18, 2026
- Issuing authority
- NWS Des Moines IA
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 5 weeks ago; use the issuing agency's live warning service for current conditions in Central Iowa.
Alert Details
A Severe Thunderstorm Warning (SVR) has been issued by the National Weather Service in Des Moines IA. The alert is effective from 5:43 AM CDT to 6:30 AM CDT on June 17, 2026.
Affected Areas
The warning covers Northeastern Marshall County, Northern Tama County, and Southeastern Grundy County in central Iowa. Locations impacted include Traer, Reinbeck, Dysart, Conrad, Gladbrook, Clutier, Beaman, Lincoln, and Tf Clark State Park.
What You Should Do
For your protection move to an interior room on the lowest floor of a building.
Expected Conditions
At 5:43 AM CDT, a severe thunderstorm was located over Beaman, or 8 miles south of Grundy Center, moving east at 50 mph. Hazards include 60 mph wind gusts and penny size hail (0.75 inch). Expect damage to roofs, siding, and trees. Source: Radar indicated.
Timeline
The warning is in effect from 5:43 AM CDT until 6:30 AM CDT on June 17, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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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 (925 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 18, 2026.
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