Active Weather Alerts
Flash Flood Warning
Issued: 4:04 PM Sep. 17, 2026 – National Weather Service
The National Weather Service in Pocatello has issued a * Flash Flood Warning for... The Big Rock burn scar in... Southeastern Jefferson County in southeastern Idaho... South Central Madison County in southeastern Idaho... * Until 100 PM MDT. * At 1004 AM MDT, Doppler radar indicated thunderstorms mbving into the area, which will produce heavy rain over the Big Rock Burn Scar. The expected rainfall rate is 0.2 to 0.4 inches in 1 hour or less. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow moving through the Big Rock burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Big Rock Burn Scar. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Big Rock Burn Scar. * Some locations that will experience flash flooding include... Heise. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Big Rock Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...0.2-0.4 INCHES IN 1 HOUR
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