Two successive atmospheric river pulses are affecting the Pacific Northwest this week, delivering multi-day heavy rainfall and flooding risk across western Washington and northwestern Oregon. The first made landfall early December 9, and a stronger second pulse is forecast to arrive late December 9–early December 10, maintaining high integrated vapor transport and major flood potential through December 11.
An intense extratropical cyclone is forming on Tuesday, December 9, 2025, over Rio Grande do Sul, bringing widespread rainfall, severe thunderstorms, and damaging winds across southern Brazil.
Large portions of the northern United States are under winter storm warnings as a strong Alberta clipper advances into the Upper Midwest and separate winter storms persist across the northern Rockies from Tuesday morning through early Wednesday, December 9-10, 2025.
At least 23 people have been reported injured due to the major M7.6 earthquake that struck Japan on December 8, 2025, prompting over 90 000 evacuations and alert for a potential mega quake.
A rapidly deepening Atlantic low, named Storm Bram, is forecast to pass close to the western coasts of Ireland, Northern Ireland and the Outer Hebrides on Tuesday, December 9, 2025, bringing very strong southerly winds, heavy rain and exceptionally high seas. The system forms part of an active North Atlantic storm train linked to recent Polar Vortex disruption.
Health complications are spreading in flood-hit in the provinces of North Sumatra, West Sumatra, and Aceh, as medical facilities face severe disruptions. Officials confirm 940 deaths and 276 people missing following Cyclone Senyar’s impact in Indonesia as of Sunday, December 7.
A major earthquake registered by the Japan Meteorological Agency (JMA) and USGS as M7.6 struck off the east coast of Aomori Prefecture, Japan, at 14:15 UTC (23:15 JST) on December 8, 2025. Both agencies are reporting a depth of 50 km (31 miles). According to the Pacific Tsunami Warning Center (PTWC), hazardous tsunami waves are possible within 1 000 km (620 miles) of the epicenter.
A small meteotsunami was observed along New Zealand’s East Coast and Lake Taupō last week as a strong weather system swept across the upper North Island, GeoNet reported on December 8, 2025.
A strong Alberta clipper will bring heavy snow and gusty winds to the northern Plains and Upper Midwest from Tuesday, December 9, through early Wednesday, December 10, 2025, prompting winter storm watches across multiple states.
A 59-year-old firefighter from New South Wales National Parks and Wildlife Service died late Sunday, December 7, 2025, at Nerong, Bulahdelah after being struck by a falling tree while working on a wildfire burning across the state’s Mid North Coast.
