Johnston, IA Alerts
Severe Thunderstorm Warning issued April 15 at 8:31PM CDT until April 15 at 9:30PM CDT by NWS Des Moines IA
Headline
Severe Thunderstorm Warning issued April 15 at 8:31PM CDT until April 15 at 9:30PM CDT by NWS Des Moines IA
Description
SVRDMX
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Northern Polk County in central Iowa...
Southern Story County in central Iowa...
Southwestern Marshall County in central Iowa...
Southeastern Boone County in central Iowa...
Northeastern Dallas County in central Iowa...
* Until 930 PM CDT.
* At 831 PM CDT, a severe thunderstorm was located near Sheldahl, or
11 miles southwest of Ames, moving northeast at 40 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, Nevada, Huxley, Madrid, Slater, State Center, Big Creek Lake,
Iowa State Center, Saylorville Lake, Maxwell, Colo, Cambridge,
Collins, Alleman, Sheldahl, Kelley, Rhodes, Luther, Big Creek State
Park, and Ames Municipal Airport.
This includes Interstate 35 between mile markers 99 and 114.
Instructions
For your protection move to an interior room on the lowest floor of a
building.
Additional Details
| Type | Alert |
| Phenomena | Severe Thunderstorm |
| Severity | Warning |
| Event Code | SVR |
| Area | Boone, IA; Dallas, IA; Marshall, IA; Polk, IA; Story, IA |
| Sent | Wednesday, April 15, 2026 8:31 PM CDT |
| Expires | Wednesday, April 15, 2026 9:30 PM CDT |
| Sender | NWS Des Moines IA |
| Id | urn:oid:2.49.0.1.840.0.d82c41d898e28ed8e54e9682cdb2093b7bbf578f.001.1 |