Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

Together with the Southwest U.S. NWS offices, NWS Grand Junction presents this year's Monsoon Awareness Week!

This year's theme is "Stay Weather Aware, Time to Prepare!" with the following daily topics that will be discussed this week:

> Sunday, June 11: Intro to the Monsoon/Extreme Heat
> Monday, June 12: Lightning
> Tuesday, June 13: Downburst Winds & Dust Storms
> Wednesday, June 14: Hiking & Camping During the Monsoon
> Thursday, June 15: Flash Flooding
> Friday, June 16: Wildfires & Debris Flow
> Saturday, June 17: Boating Hazards During the Monsoon