Subj : HVYRAIN: Excessive Rainfa
To   : All
From : Mike Powell
Date : Mon Jan 26 2026 09:21:58

FOUS30 KWBC 260651
QPFERD

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
151 AM EST Mon Jan 26 2026

Day 1
Valid 12Z Mon Jan 26 2026 - 12Z Tue Jan 27 2026

The probability of rainfall exceeding flash flood guidance is less
than 5 percent.

Cook


Day 2
Valid 12Z Tue Jan 27 2026 - 12Z Wed Jan 28 2026

The probability of rainfall exceeding flash flood guidance is less
than 5 percent.

Cook


Day 3
Valid 12Z Wed Jan 28 2026 - 12Z Thu Jan 29 2026

....THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL ACROSS WESTERN
WASHINGTON STATE...

Models are generally consistent in a substantial increase in
southwesterly low-level flow across western Washington State during
the D3/Wed forecast period as a broad upper trough becomes
established over the northeastern Pacific. 35-50kt 850mb flow will
become oriented favorably against local terrain for appreciable
orographic ascent for occasional moderate to heavy rainfall. Areas
of 2-5 inch rainfall totals are expected mainly across the Olympic
Peninsula (highest in favorable terrain areas). These rainfall 
totals should be sufficient for at least isolated/minor flooding in
typically favored areas.

Cook
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