418  
WGUS65 KPIH 130714  
FFAPIH  
 
URGENT - IMMEDIATE BROADCAST REQUESTED  
FLOOD WATCH  
NATIONAL WEATHER SERVICE POCATELLO ID  
114 AM MDT THU AUG 13 2026  
 
IDZ053-140400-  
/O.EXT.KPIH.FF.A.0004.260813T1800Z-260814T0400Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
UPPER SNAKE RIVER PLAIN-  
INCLUDING THE CITIES OF REXBURG, IDAHO FALLS, AND ST. ANTHONY  
114 AM MDT THU AUG 13 2026  
 
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR NOW IN EFFECT FROM  
NOON MDT TODAY THROUGH THIS EVENING...  
 
* WHAT...FLASH FLOODING AND DEBRIS FLOWS CAUSED BY EXCESSIVE RAINFALL  
CONTINUE TO BE POSSIBLE OVER THE BIG ROCK BURN SCAR.  
 
* WHERE...THE BIG ROCK BURN SCAR NEAR HEISE.  
 
* WHEN...FROM NOON MDT TODAY THROUGH THIS EVENING.  
 
* IMPACTS...HEAVY RAINFALL OVER THE BIG ROCK BURN SCAR IS POSSIBLE  
THURSDAY AFTERNOON INTO THURSDAY EVENING. ANYONE IN OR NEAR THE BIG  
ROCK BURN SCAR SHOULD PREPARE FOR POTENTIAL DEBRIS FLOW MOVING  
THROUGH THE BIG ROCK BURN SCAR. BE SURE TO STAY UP TO DATE WITH  
INFORMATION FROM LOCAL AUTHORITIES. HEAVY RAINFALL COULD TRIGGER  
FLASH FLOODING AND DEBRIS FLOWS IN AND NEAR RECENT WILDFIRE BURN  
SCARS.  
 
* ADDITIONAL DETAILS...  
- NATIONAL WEATHER SERVICE METEOROLOGISTS ARE FORECASTING HEAVY  
RAINFALL POSSIBLE OVER THE BIG ROCK BURN SCAR, WHICH MAY LEAD TO  
FLASH FLOODING AND DEBRIS FLOWS.  
- SOME LOCATIONS THAT MAY EXPERIENCE FLASH FLOODING INCLUDE...  
HEISE.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION  
SHOULD FLASH FLOOD WARNINGS BE ISSUED.  
 
 
 
 
 
13  
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