121
AGUS74 KWCO 062002
HMDNWC

National Hydrologic Discussion - EXPERIMENTAL
NWS National Water Center - Tuscaloosa AL
200 PM CST SAT DEC 6 2025

Considerable flooding, along with the landslides, is expected across
portions of the Pacific Northwest beginning late Monday and may linger
through the week...

.Pacific Northwest...
A series of frontal systems will bring periods of heavy rainfall through at
least the middle of next week across western WA and OR with considerable
river flooding and widespread urban and small stream flooding expected. The
flooding impacts will be greatest on Monday night through Wednesday of next
week when the heaviest rainfall (daily totals of 2 - 4") are expected.
Soils are saturated and daily rainfall through next week will sufficiently
prime the hydrologic environment. Due to the saturated soils, landslides in
the steep or mountainous terrains are possible as heavy rainfall lingers
across the region. Minor to isolated major river flooding is forecast with
rapid rises beginning to occur late Monday evening, particularly in the
foothills of the Cascades and may continue through late next week. Many of
the rivers and streams are forecast to experience multiple peaks throughout
the week as multiple rounds of rainfall move across the basins. While the
magnitude and extent of responses continues to fluctuate somewhat due to
the timing of the event, confidence in Considerable flooding impacts
remains high.

//JAC

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

$$