"Severe Storms Threaten Pacific Northwest and California with Heavy Rain and Debris Flows"

A bomb cyclone, fueled by an atmospheric river, is set to bring heavy rain to the Pacific Northwest, with 3-5 inches expected in coastal areas and up to 8 inches in higher elevations. This storm system meets the criteria for a bomb cyclone, with a significant drop in central pressure. The region is preparing for the first atmospheric river of the season, which could cause debris flows in areas affected by recent wildfires. The storm is occurring during an El Niño year, increasing the likelihood of atmospheric river events.