080
FGUS75 KMSO 252348 CCA
ESFMSO
IDC035-049-059-MTC023-039-061-063-077-081-093-261700-
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
1147 AM MDT MON AUG 25 2025
..ROCK AND MUDSLIDES DUE TO EXCESSIVE RAINFALL
WHERE: LEMHI, IDAHO, AND CLEARWATER COUNTIES IN IDAHO
RAVALLI, MINERAL, MISSOULA, GRANITE, DEER LODGE, POWELL, AND
SILVERBOW COUNTIES IN MONTANA
WHAT: CONFIDENCE CONTINUES TO TREND HIGHER THAT MONSOON MOISTURE
WILL BE SPREADING NORTH INTO THE NORTHERN ROCKIES BY WEDNESDAY,
BRINGING A CHANCE FOR SCATTERED THUNDERSTORMS. THESE THUNDERSTORMS
WILL BE CAPABLE OF PRODUCING RAIN RATES IN EXCESS OF ONE HALF INCH
PER HOUR. THE RESULT WILL BE THE POTENTIAL FOR ROCK AND DEBRIS
SLIDES IN STEEP TERRAIN ALONG FOREST SERVICE ROADS AND RECENT BURN
SCAR AREAS, AS WELL AS HIGHWAY 95 FROM RIGGINS TO WHITEBIRD IN IDAHO
AND SKALKAHO ROAD IN MONTANA.
CONSIDER DELAYING ANY BACKCOUNTRY TRAVEL FOR WEDNESDAY AND THURSDAY
OF THIS WEEK.
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