Severe Thunderstorm Warning — Howard County, Iowa
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued August 21 at 3:17AM CDT until August 21 at 4:00AM CDT by NWS La Crosse WI
At 317 AM CDT, a severe thunderstorm was located 7 miles northeast of Lime Springs, or 11 miles southwest of Preston, moving east at 35 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe storm will be near... Harmony around 325 AM CDT. Canton around 330 AM CDT. Mabel around 345 AM CDT. Other locations impacted by this severe thunderstorm include Granger, Newburg, Hesper, York, Bristol, Burr Oak, and Lenora.
Effective August 21, 2026 at 4:17 AM ET · Expires August 21, 2026 at 5:00 AM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS La Crosse WI
Expires
August 21, 2026 at 5:00 AM ET
Last Checked
3 hours ago
What To Do
📋 Official NWS Guidance
For your protection move to an interior room on the lowest floor of a building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in La Crosse.
Other Active Alerts in Iowa
Flash Flood Warning
Flash Flood Warning
Flash Flood Warning
Flood Advisory
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Get Severe Thunderstorm Warning Alerts for Howard County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for Howard County, Iowa?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (3 hours ago). It's set to expire August 21, 2026 at 5:00 AM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Howard County?
Download StormCast free on Google Play and set Howard County, Iowa as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.