834
AGUS74 KWCO 101954
HMDNWC

National Hydrologic Discussion - EXPERIMENTAL
NWS National Water Center - Tuscaloosa AL
200 PM CST WED DEC 10 2025

...Locally catastrophic river flooding is expected, with considerable small
stream flooding and landslides possible across portions of the Pacific
Northwest this week... Rain and snowmelt are expected to generate urban,
small stream, and isolated minor river flooding across portions of the
Northern Rockies this week...

.Pacific Northwest...
Locally catastrophic major and/or record river flooding impacts will
continue to bring significant risk to life and property in portions of WA
state, especially along the Skagit and Snohomish rivers through at least
Thursday. Many rivers across the region are forecast to experience multiple
peaks throughout the rest of the week, with local levees likely being
overtopped. Considerable small stream flooding is also ongoing and
additional rainfall may continue to bring urban flooding impacts through
Thursday in WA and northwest OR. Soils are saturated across most of WA and
landslides are expected in areas of mountainous and steep terrain.
Confidence in locally catastrophic and considerable impacts remains high
through Thursday. Additional rainfall is forecast to renew flooding
concerns next week.

.Northern Rockies...
Additional rainfall and snowmelt will continue to generate urban and small
stream flooding impacts across portions of northern ID and southwest MT
through Thursday, with minor river flooding also forecast in northern ID.
Higher temperatures will continue to accelerate snowmelt in the low-to-mid
elevations and this, combined with additional rainfall will likely result
in small stream and river responses across the region. Confidence in
flooding impacts remains high through Thursday.

//JAW

Additional National Water Center products are available at
www.weather.gov/owp/operations

$$