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 >

 

Heavy Rainfall this Weekend and Below Normal Temperatures on the Horizon

Widespread showers and scattered thunderstorms will bring heavy rainfall to parts of the region for Sunday into Monday. Later in the week and into Labor Day weekend, cooler than normal weather is expected.

WPC Excessive Rainfall Outlook shows a Slight Risk of Heavy Rain along the Red River Valley for Sunday 

 

WPC Days 1-2 Rainfall Forecast valid from 7:00 AM Saturday through 7:00 AM Monday

WPC Day 3 Rainfall Forecast valid from 7:00 AM Monday to 7:00 AM Tuesday

Below are the latest outlooks from the Climate Prediction Center (CPC). These outlooks are favoring below normal temperatures through late August and into early September. For late August through mid September, climatological averages for the area are generally highs in the 70s with lows in the 50s falling to the upper 40s by mid September. Precipitation averages are generally between 0.50 and 1.00 inches over the course of a week.