Hydrologic Outlook issued December 23 at 4:24PM PST by NWS Seattle WA

ESFSEW

An atmospheric river will bring significant rainfall to the Olympic
Peninsula Wednesday into Thursday. Widespread rainfall totals of 4
to 6 inches are expected in the mountains, with locally over 6
inches over the highest peaks. Snow levels will begin around 3000 ft
during this time frame.

An extended wet period with snow levels above 4000 ft Thursday
through next weekend over the Olympics and into portions of
southwestern Washington. The area of concern for additional river
flooding impacts may expand east to include rivers in Thurston and
Lewis counties.

Please monitor the latest river forecasts from the National Weather
Service for additional information.