Hydrologic Outlook

Hydrologic Outlook
WAC007-047-080415-

Hydrologic Outlook
National Weather Service Spokane WA
812 PM PST Sat Dec 6 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
high elevation mountain snow and mid to low elevation rain in the
Washington Cascades next week. Snow levels will fluctuate between
3000 and 5000 feet. Mid to 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, as well as to recently burned areas and
any burn scars.
$$

OTX

Hydrologic Outlook
WAZ027-522-523-080000-

Hydrologic Outlook
National Weather Service Pendleton OR
709 PM PST Sat Dec 6 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.
$$

MR

Hydrologic Outlook
ORC011-019-080000-

Hydrologic Outlook
National Weather Service Medford OR
1132 AM PST Sat Dec 6 2025

...Flood Potential Outlook for quick rises on rivers, creeks and
streams in portions of Coos and Douglas counties in Oregon...

A persistent storm track into the Pacific Northwest will bring
periods of rain, some heavy, to Coos and Douglas counties Sunday
through Wednesday. The time frame for heaviest rainfall appears to
be Monday night to Wednesday. Right now, rain amounts of 2 to 4
inches are most likely with the heaviest amounts across northern
Coos County and northern Douglas County along the Lane County
border. Lesser amounts are expected in the Umpqua Basin south of
Roseburg. Heavier rain amounts and flood impacts are more likely
farther north.

Main stem rivers in our area are currently running very low for this
time of year and we are not expecting river flooding. In fact, none
of the local river gauges are currently forecast to even get close
to flood stage. However, water levels could rise quickly, especially
around mid week and around some of the flashier creeks. This could
be dangerous for anyone near the water. Local ponding of water on
roadways could also be a hazard.

Please be aware that forecasts could change. While we are not
anticipating any watches or warnings at this time, watches and
warnings may be issued by the National Weather Service if the
situation worsens. This product will be updated or be allowed to
expire as new information becomes available.
$$

MAS