Hydrologic Outlook

Hydrologic Outlook
WAC007-047-070430-

Hydrologic Outlook
National Weather Service Spokane WA
816 PM PST Fri Dec 5 2025

...RIVER RISES AND AN INCREASED RISK OF MUD AND ROCK SLIDES NEXT
WEEK FOR THE CASCADES...

A series of warm, wet, and breezy weather systems will result in
periods of high mountain snow and heavy low to mid elevation rain
for the Washington Cascades next week. Snow levels will fluctuate
between 3000 and 5000 feet. Lower elevation snowmelt in addition to
the rainfall will lead to rises on small creeks and streams. This
will also bring an increased risk for mud and rock slides in areas
of steep, snow-free terrain and recently burned areas.
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OTX

Hydrologic Outlook
WAZ027-522-523-070015-

Hydrologic Outlook
National Weather Service Pendleton OR
303 PM PST Thu Dec 4 2025

...RIVERS RISING IN THE WASHINGTON CASCADES EARLY NEXT WEEK...

A series of weather systems will bring rain and rising river levels
to the area, especially the Washington Cascades, through this
weekend. Another system fed by a strong atmospheric river early next
week will bring heavier rain amounts. Currently a few locations on
the Naches and Yakima Rivers are forecast to reach action stage
starting Tuesday and Wednesday but the chances of reaching minor
flood stage are very low.


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GP