Hydrologic Outlook

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

Hydrologic Outlook
WAC009-027-029-031-033-035-041-045-053-055-057-061-067-073-051200-

Hydrologic Outlook
National Weather Service Seattle WA
1256 PM PST Thu Dec 4 2025

...THREAT OF RIVER FLOODING ACROSS WESTERN WASHINGTON EARLY NEXT
WEEK...

A series of atmospheric rivers will provide rounds of increasingly
impactful rainfall starting on Friday and continuing through early
next week. Snow levels will remain around 5000 to 6000 feet. Expect
rising rivers with potential for flooding especially for rivers
flowing off the Olympics and Cascades. Urban flooding and landslides
are also possible throughout this period as the soil conditions
remain wet.
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