A powerful mid-latitude cyclone is set to impact the West Coast of the United States this week, bringing with it a strong atmospheric river that will primarily affect Oregon and California. This low-pressure system is undergoing a process known as bombogenesis, characterized by a rapid intensification typically involving a pressure drop of at least 24mb within a 24-hour period. In this case, the storm is forecasted to experience an unprecedented pressure drop between 50-60mb in less than a day.
The cyclone is expected to hit the West Tuesday through Thursday, leading to significant weather disruptions. Regions in the Northwest and northern California can anticipate heavy rainfall, powerful winds, and high swells. As the storm strengthens, it will draw in a significant amount of sub-tropical moisture, forming an atmospheric river. This phenomenon is capable of causing extreme levels of precipitation alongside gusty winds, with the Weather Prediction Center issuing a HIGH RISK warning for excessive rainfall in Northern California.
From Tuesday to Thursday, heavy rainfall is forecasted, with totals potentially exceeding a foot in Northern California and Southern Oregon. Flooding, particularly in low-lying areas, is a significant concern, as the risk for both river flooding and flash flooding remains high. Residents in prone areas should prepare for possible evacuations if flash flood warnings are issued. Coastal areas may also experience strong winds capable of uprooting trees and downing power lines, especially from Tuesday into Wednesday.
Additionally, Winter Storm Warnings have been issued for the higher elevations of Northern California, where heavy snowfall is expected to continue through Wednesday.
Stay updated with WeatherNation for ongoing coverage of this formidable storm system.
This alert serves as a reminder of nature’s power and the importance of preparedness in the face of severe weather. While the impending storm may bring hazardous conditions, it also has the potential to replenish water supplies and promote ecological resilience in the affected regions in the long run.