National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

September is National Preparedness Month!

Snow in the Bighorns
National Preparedness Month Runs from September 1st-30th

Hazards come in many forms and shapes, from weather-related issues to power-related issues and beyond. September is National Preparedness Month, and each week will host a different theme. Check this page throughout the month to learn more about what you can do to be prepared in case an emergency occurs! The tabs below will either take you to locally developed safety pages (if available), or to FEMA's preparedness pages.

Overview Flood Wildfire Winter Weather Power Outage PrepareAthon!

 

Here's a break-down of each week's focus: