Headline:
Severe Thunderstorm Warning issued July 20 at 2:51PM CDT until July 20 at 3:30PM CDT by NWS Des Moines IA
Event:
Severe Thunderstorm Warning
Urgency:
Immediate
Effective:
July 20, 2026 - 12:51pm
Expires:
July 20, 2026 - 1:30pm
Description:
SVRDMX
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Northeastern Franklin County in north central Iowa...
Northwestern Butler County in north central Iowa...
Central Cerro Gordo County in north central Iowa...
* Until 330 PM CDT.
* At 251 PM CDT, a severe thunderstorm was located near Portland, or
8 miles southeast of Mason City, 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...
Mason City, Nora Springs, Sheffield, Greene, Rockwell, Mason City
Municipal Airport, Clear Lake, Ventura, Swaledale, Aredale,
Dougherty, Burchinal, Portland, Clear Lake State Park, and McIntosh
Woods State Park.
This includes Interstate 35 between mile markers 184 and 195.
Instruction:
For your protection move to an interior room on the lowest floor of a
building.
Area Description:
Butler, IA; Cerro Gordo, IA; Franklin, IA
Forcast Office:
NWS Des Moines IA
Sender: