422 
WGUS55 KPIH 180400
FFWPIH
IDC019-051-180800-
/O.NEW.KPIH.FF.W.0010.260918T0400Z-260918T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pocatello ID
1000 PM MDT Thu Sep 17 2026

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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4375 11200 4375 11195 4376 11195 4376 11191
      4374 11189 4374 11187 4373 11187 4346 11200
      4351 11207 4351 11210

FLASH FLOOD...RADAR INDICATED

$$

GK


372 
WGUS55 KPIH 180425
FFWPIH
IDC051-065-180830-
/O.NEW.KPIH.FF.W.0011.260918T0425Z-260918T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pocatello ID
1025 PM MDT Thu Sep 17 2026

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 230 AM MDT.

* At 1025 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain over the Big Rock Burn Scar. 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.

&&

LAT...LON 4366 11172 4367 11173 4368 11172 4366 11170
      4366 11167 4367 11165 4365 11163 4364 11164
      4364 11165 4363 11166 4363 11169 4364 11169
      4365 11171

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

GK