‘Bomb cyclone’ knocks out power to over 600,000 across northwest US

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SEATTLE (AP) – A major storm swept across the northwest United States (US), battering the region with strong winds and rain and causing widespread power outages and downed trees that killed at least one person.

The Weather Prediction Centre issued excessive rainfall risks and hurricane-force wind warnings were in effect as the strongest atmospheric river – a large plume of moisture – that California and the Pacific Northwest has seen this season overwhelms the region. The storm system is considered a ‘bomb cyclone’, which occurs when a cyclone intensifies rapidly.

Downed trees struck homes and littered roads across northwest Washington. In Lynnwood, Washington, a woman died on Tuesday night when a large tree fell on a homeless encampment, South County Fire said in a statement on X. In Seattle, a tree fell onto a vehicle, temporarily trapping a person inside, the Seattle Fire Department reported. The agency later said the individual was in stable condition.

“Trees are coming down all over the city and falling onto homes,” the fire department in Bellevue, about 16 kilometres east of Seattle, posted on the social platform X. “If you can, go to the lowest floor and stay away from windows. Do not go outside if you can avoid it.”

Early yesterday, over 600,000 houses in Washington State were reported to be without power on poweroutage.us. But the number of outage reports fluctuated wildly throughout the evening likely due in part to several weather and utility agencies struggling to report information on the storm because of internet outages and other technical problems. It wasn’t clear if that figure was accurate. More than 15,000 had lost power in Oregon and nearly 19,000 in California.

As of 8pm, the peak wind speed was in Canadian waters, where gusts of 163 kilometres per hour (kph) were reported off the coast of Vancouver Island, according to the National Weather Service in Seattle. Along the Oregon coast, there were wind gusts as high at 127kph on Tuesday evening, according to the National Weather Service in Medford, Oregon, while wind speed of 124 kph was recorded at Mount Rainier in Washington.

A tree resting on the roof of a house during a major storm in Issaquah, Washington, United States. PHOTO: AP