⚠️ Severe Thunderstorm Warning – Boone, IA; Hamilton, IA; Hardin, IA; Story, IA – Monday, July 20, 2026

Severe Thunderstorm Warning issued July 20 at 5:52PM CDT until July 20 at 6:15PM CDT by NWS Des Moines IA

Details

SVRDMX

The National Weather Service in Des Moines has issued a

* Severe Thunderstorm Warning for…
Northwestern Story County in central Iowa…
Southwestern Hardin County in central Iowa…
Southeastern Hamilton County in central Iowa…
Northeastern Boone County in central Iowa…

* Until 615 PM CDT.

* At 552 PM CDT, a severe thunderstorm was located over Randall, or
14 miles north of Ames, moving southeast at 35 mph.

HAZARD…60 mph wind gusts and quarter size hail.

SOURCE…Radar indicated.

IMPACT…Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* Locations impacted include…
Ames, Story City, Roland, Jewell Junction, Gilbert, Ellsworth,
Stanhope, Randall, and Garden City.

This includes Interstate 35 between mile markers 118 and 134.

Instructions

For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 1000 PM CDT for central Iowa.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.