278  
NWUS55 KMSO 172303  
LSRMSO  
 
PRELIMINARY LOCAL STORM REPORT  
NATIONAL WEATHER SERVICE MISSOULA MT  
503 PM MDT FRI JUL 17 2026  
   
.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON
 
   
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.
 
 
..REMARKS..  
 
0502 PM FLASH FLOOD 1 SE DRUMMOND 46.66N 113.13W  
07/17/2026 GRANITE MT EMERGENCY MNGR  
 
FLOODING ACROSS I-90 WB LANE BETWEEN MILE  
MARKER 155-156, EAST OF DRUMMOND MT.  
 

 
 

 
 
BEC  
 
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