Four atmospheric rivers (ARs) are forecast to impact the Pacific Northwest from Tuesday, January 28 through January 31, 2026, bringing several days of moderate to heavy precipitation, with rainfall totals reaching 125–250 mm (5–10 inches) over the Olympic Peninsula and 50–125 mm (2–5 inches) across the Willapa Hills, northern Oregon Coast Ranges, and Washington Cascades.
At least 2 people were killed by an avalanche near Long Pass in Washington’s Cascade Mountains on January 9, 2026, while two others were safely rescued.
An atmospheric river (AR) is expected to reach the Pacific Northwest (PNW) on Saturday, October 18, 2025, bringing heavy rain and elevated freezing levels above 2 400 m (8 000 feet) before lowering as the system moves east. 25–100 mm (1–4 inches) of rainfall is forecast over coastal Washington and Oregon, with orographic enhancement expected on the Olympic Peninsula and Northern Cascades.
ER reports that elevated seismicity continues at Mount Rainier (station STAR) and near Mount Saint Helens (station SHW) volcanoes in the Washington Cascades, US.
Event depths at Mount Saint Helens average around 13 km and form a radial pattern in
