Flash Flood Warning — Thurston County, Nebraska
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 13 at 5:25AM CDT until August 13 at 8:30AM CDT by NWS Omaha/Valley NE
FFWOAX The National Weather Service in Omaha/Valley has issued a * Flash Flood Warning for... Northern Monona County in west central Iowa... Thurston County in northeastern Nebraska... * Until 830 AM CDT. * At 525 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 5 inches of rain have fallen, with much of it falling in less than an hour. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Onawa, Mapleton, Walthill, Whiting, Ute, Rosalie, Castana, Thurston, Macy, Rodney, Lewis And Clark State Park, Kennebec, Omaha Reservation and Winnebago Reservation.
Effective August 13, 2026 at 6:25 AM ET · Expires August 13, 2026 at 9:30 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Omaha/Valley NE
Expires
August 13, 2026 at 9:30 AM ET
Last Checked
18 hours ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Nebraska
Flash Flood Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Tornado Warning
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Get Flash Flood Warning Alerts for Thurston 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 Flash Flood Warning mean for Thurston County, Nebraska?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (18 hours ago). It's set to expire August 13, 2026 at 9:30 AM ET.
How do I get notified about Flash Flood Warning alerts for Thurston County?
Download StormCast free on Google Play and set Thurston County, Nebraska 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.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Monona County.