Home / Weather News /

California atmospheric river events

04:51 PM
February 3, 2025

Snow & flooding
Moisture plume aimed at N. Calif., PNW

Very heavy rain and snow impacted the Pacific Northwest and northern California over the weekend and the atmospheric river activity aimed toward the West Coast isn't going anywhere these next several days.

It's called the Pineapple Express due to its point of origin out of the tropical Pacific. Plentiful moisture is siphoned northward thanks to low-pressure systems moving into the West Coast. These rivers of rain, or atmospheric rivers, can carry 15 times more water vapor than exits the mouth of the Mississippi! They provide the rain and snowpack that the western U.S. needs through its dry season.

Learn more about Atmospheric Riversread more

Heavy rain and snow certainly left their mark in Belden, Calif., over the weekend and more activity is on the way. The WeatherRadar shows more wet and snowy weather through the end of the week and forecast guidance shows a break on the way this coming weekend. When it comes to snow, several feet are in the forecast - like across the higher elevations of the northern Sierra.

If you've been staying up to date with the situation on the app, you will have seen heavy rain and winter weather alerts popping up on the home screen, just as pictured above. Check to make sure your alerts are switched on.

Becca Parker
More on the topic
Sunday, November 9, 2025

Find the lotion!

Dry skin season is back
full moon in the sky
Tuesday, November 4, 2025

A great celestial show

Largest full moon of the year
Time change  Fall back
Saturday, November 1, 2025

Time change

Adding an hour this weekend
All weather news
This might also interest you
Sunday, November 9, 2025

What is it?

Lake-effect snow explained
Saturday, November 8, 2025

The polar vortex

Mother Nature's refrigerator door
Friday, November 7, 2025

Daily briefing

Busy Friday ahead with rain, snow & storms
All articles
Weather & Radar

www.weatherandradar.com

instagramfacebookthreadsContact uslinkList
Privacy policy | Legal info | Accessibility statement