⚠️ Severe Thunderstorm Warning – Polk, IA – Saturday, July 4, 2026

Severe Thunderstorm Warning issued July 4 at 1:46AM CDT until July 4 at 2:15AM CDT by NWS Des Moines IA

Details

SVRDMX

The National Weather Service in Des Moines has issued a

* Severe Thunderstorm Warning for…
Northwestern Polk County in central Iowa…

* Until 215 AM CDT.

* At 146 AM CDT, a severe thunderstorm was located over Saylorville
Lake, or near Johnston, moving southeast at 25 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

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

* Locations impacted include…
Des Moines, Ankeny, Johnston, Polk City, Saylorville, Granger,
Saylorville Lake, Big Creek Lake, Margo Frankel Woods State Park,
Ankeny Regional Airport, and Big Creek State Park.

This includes the following highways…
Interstate 35 between mile markers 88 and 96.
Interstate 80 between mile markers 133 and 137.

Instructions

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

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