• Leavenworth Christmastown festival cancelled as historic flooding and power disruptions hit Washington, U.S.

    ByRishav Kothari

    The Leavenworth Christmastown festival was cancelled after historic Washington floods triggered widespread power outages across Chelan County. Over 5 000 customers across the county, accounting for more than 11 000 people, were left without power due to the impacts of a major atmospheric river (AR). Power is expected to be restored for most customers by the evening of December 13, 2025, while debris cleanup and recovery efforts are expected to continue until next weekend.

  • After historic flooding in Washington, a new atmospheric river is forecast to impact the U.S. West Coast

    ByTeo Blašković

    Historic flooding caused by a major atmospheric river earlier this week impacted large parts of western Washington state, prompting evacuations, emergency declarations, and record river levels. As impacts from that event persist, another strong atmospheric river is forecast to reach the Pacific Northwest on Sunday, December 14, 2025, bringing a prolonged period of precipitation to Washington, Oregon, and northern California through mid-week.

  • Two atmospheric rivers forecast to bring heavy rain to the Pacific Northwest through early November

    ByTeo Blašković

    Two atmospheric rivers are forecast to affect the Pacific Northwest between October 28 and November 2, 2025, bringing periods of heavy rainfall to western Washington and northern Oregon. The first system is expected to reach AR1 strength, while the second could intensify to AR3 or AR4 as it moves inland later in the week. Hydrologic models indicate notable river rises but no significant flooding at this time.

  • Moderate-to-strong atmospheric river forecast to impact coastal Washington and Oregon, U.S.

    ByRishav Kothari

    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.

  • Series of atmospheric rivers to bring heavy rain to Washington, Oregon, and northern California through early October

    ByRishav Kothari

    A series of atmospheric rivers (AR) is forecast to hit the U.S. West Coast from late September through early October, beginning with a strong AR that made landfall over British Columbia on September 26, 2025. Forecasts show moderate AR conditions in Washington, Oregon, and northern California on September 28, followed by a stronger system making landfall on September 30 and potentially continuing into October 7.

  • Earthquake swarm detected beneath Mount Rainier, Washington

    ByTeo Blašković

    A swarm of hundreds of small earthquakes was detected beneath the summit of Mount Rainier, Washington, starting at 01:29 LT (08:29 UTC) on July 8, 2025, prompting increased monitoring by the USGS Cascades Volcano Observatory and the Pacific Northwest Seismic Network.