NWS Pocatello IDFF.W 0008September 17, 2026
Flash Flood Warning: Jefferson and Madison, ID
The National Weather Service office in Pocatello issued a flash flood warning for Jefferson and Madison in Idaho, which was in force until 1:00 p.m. local time on September 17. It was the 8th flash flood warning the NWS office in Pocatello issued in 2026. Idaho had 10 flash flood warnings in September 2026, against 3 in an average September of 2008-2025 (Idaho's flash flood warnings by year).
ExpiredWarning
In force for 2.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Pocatello ID
- Area
- Jefferson and Madison
- State
- Idaho
- Level
- Warning
- Issued
- 10:04 a.m. MDT, September 17, 2026
- Expires
- 1:00 p.m. MDT, September 17, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KPIH FF.W 0008
- Official source
- National Weather Service: the notice at its source
Flash Flood Warnings in Idaho since 2008Every warning type in Idaho
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWPIH 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.
What the agency told people to do
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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.