Summary
Millions in California are preparing for an atmospheric river, a weather event that can cause heavy rain, snow, and wind. This storm is expected to particularly affect Southern California starting Wednesday night.
Key Facts
- An atmospheric river is a narrow area in the atmosphere that carries water vapor, like a river in the sky.
- These storms commonly occur on the West Coast of the U.S. during winter, bringing heavy rain, snow, and strong winds.
- Southern California, including cities like Los Angeles and San Diego, could receive a month's worth of rain within days.
- More than 4 inches of rain is expected in some areas of Southern California over three days.
- In high elevation areas, more than a foot of snow could fall, especially in the Sierra Nevada mountains.
- Wind gusts may reach up to 70 mph, particularly in high elevation regions.
- The National Weather Service (NWS) advises caution and suggests delaying travel where possible due to these conditions.
