Severe · Flash Flood WarningActive alert
Flash Flood Warning issued September 17 at 10:00PM MDT until September 18
Affecting Bonneville, ID; Jefferson, ID
In effect until: Sep 18, 2026, 8:00 AM
Bonneville, ID; Jefferson, ID
Likely impact across 2 counties in ID; effects through 8:00 AM.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Read the original bulletin (official text)
FFWPIH The National Weather Service in Pocatello has issued a * Flash Flood Warning for... North Central Bonneville County in southeastern Idaho... South Central Jefferson County in southeastern Idaho... * Until 200 AM MDT. * At 1000 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across 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... Idaho Falls, Rigby, Lorenzo, Ucon, Menan and Lewisville.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™