026
WGUS55 KBOI 262345
FFWBOI
IDC015-270245-
/O.NEW.KBOI.FF.W.0007.250826T2345Z-250827T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BOISE ID
545 PM MDT TUE AUG 26 2025
THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN BOISE COUNTY IN SOUTHWESTERN IDAHO...
* UNTIL 845 PM MDT.
* AT 545 PM MDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS ONGOING OR
EXPECTED TO BEGIN SHORTLY.
EXCESSIVE RAINFALL OVER THE BURN SCAR WILL RESULT IN DEBRIS FLOW
MOVING THROUGH THE WAPITI BURN SCAR. THE DEBRIS FLOW CAN CONSIST OF
ROCK, MUD, VEGETATION AND OTHER LOOSE MATERIALS.
HAZARD...FLASH FLOODING CAUSED BY THUNDERSTORMS.
SOURCE...RADAR.
IMPACT...FLASH FLOODING OF SMALL CREEKS AND STREAMS, AS WELL AS
OTHER POOR DRAINAGE AND LOW-LYING AREAS.
* LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
MAINLY RURAL AREAS OF NORTHEASTERN BOISE COUNTY ALONG IDAHO
STATE HIGHWAY 21.
A LANDSLIDE HAS CLOSED IDAHO STATE HIGHWAY 21 BETWEEN GRANDJEAN AND
THE CUSTER COUNTY LINE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS, ROADS AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES, MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN, ESPECIALLY IN AND AROUND THESE AREAS.
LAT...LON 4429 11524 4430 11524 4431 11523 4425 11520
4422 11521 4420 11524 4418 11524 4418 11526
4422 11525 4425 11522
FLASH FLOOD...RADAR INDICATED
LC
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