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

Event	Severe Thunderstorm Warning
Severity	Severe
Urgency	Immediate
Certainty	Observed
Area	Boone, IA; Story, IA
Effective	7/20/2026, 6:34:00 PM CDT
Expires	7/20/2026, 7:00:00 PM CDT

Severe Thunderstorm Warning issued July 20 at 6:34PM CDT until July 20 at 7:00PM CDT by NWS Des Moines IA

SVRDMX

The National Weather Service in Des Moines has issued a

* Severe Thunderstorm Warning for…
Southwestern Story County in central Iowa…
Southeastern Boone County in central Iowa…

* Until 700 PM CDT.

* At 634 PM CDT, a severe thunderstorm was located over Slater, or 9
miles southwest of Ames, moving south at 30 mph.

HAZARD…60 mph wind gusts and nickel size hail.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Ames, Huxley, Madrid, Slater, Woodward, Sheldahl, Kelley, and
Luther.

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.