Northern California Gets Unprecedented Rainfall and Flooding Threats

Northern California is experiencing record-breaking rainfall due to a mighty atmospheric river, following a historically intense bomb cyclone.

Published on November 22, 2024

Northern California
CHICO, CALIFORNIA - FEBRUARY 20: An atmospheric river extreme weather event causes the Sacramento River to flood nearby farmland on February 20, 2017 in Chico, California.

Northern California is experiencing record-breaking rainfall due to an atmospheric river, following a historically intense bomb cyclone. The Weather Prediction Center issued a level 4 out of 4 high-risk flooding alert, warning of life-threatening flooding along the northwest California coast. Torrential rain and debris flows have triggered landslides, affecting highways like Highway 281.

Rainfall totals are staggering, with up to 16 inches expected through Thursday. Over a foot of rain has already been recorded in parts of the Coastal Range north of the San Francisco Bay Area since Tuesday. Santa Rosa is facing widespread flooding and road closures, urging residents to travel only if necessary.

Snowfall and Hazardous Driving Conditions

Heavy snowfall is affecting the Northern California mountains and the Oregon Cascades, with over a foot of snow already fallen and more expected through the weekend. Combined with heavy rain, many roads are covered in snow, creating hazardous driving conditions. Authorities are urging residents to drive cautiously and increase the distance between vehicles.

Washington State Struggles with Power Outages

Washington state is facing the aftermath of the bomb cyclone, which brought hurricane-force winds earlier this week. Over 300,000 residents are still without power, with restoration efforts hampered by blocked roads and fallen trees. Utility crews from other states and Canada are helping, but challenges remain, particularly in King County, which includes Seattle.

High winds damaged both local power lines and larger transmission lines that supply entire communities. Efforts to clear blocked roads and repair power lines continue, as the region braces for another incoming storm.

A New Storm on the Horizon

Another storm is expected to approach the Northwest on Friday. While it may not match the intensity of the previous bomb cyclone, it will bring more rain, gusty winds, and snow, adding to the challenges in Northern California and Washington. Authorities have urged residents to prepare for additional power outages and possible new damage.

Deadly Consequences of the Bomb Cyclone

The bomb cyclone proved deadly, with at least two people killed in Washington due to strong winds that toppled trees. Emergency crews have been working tirelessly to clear fallen trees from roads, homes, and other structures. In Maple Valley, two people were rescued from their trailer after it was crushed by a falling tree.

Ongoing Efforts and Community Resilience

Crews are working day and night to restore power, remove debris, and make roads passable. Amtrak resumed services after a train collided with a fallen tree north of Seattle, with no reported injuries among passengers. As Northern California and the Pacific Northwest brace for more rain and wind, residents are urged to stay vigilant and follow local advisories.

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