National Weather Service United States Department of Commerce

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 >

Observed and Forecast Precipitation for east Tennessee, southwest Virginia, and extreme southwest North Carolina


 

Observed Precipitation (Ground Truth):

 

Daily TVA Lake Basins Rainfall Information

 

National Daily Precipitation Totals (radar estimated)

 

  

Precipitation Forecasts:

 

 

Day 1 U.S. precipitation forecast [12Z to 12Z forecast = today/tonight] [00Z to 00Z forecast = tonight/tomorrow]

 

Day 2 U.S. precipitation forecast [12Z to 12Z forecast = tomorrow/tomorrow night] [00Z to 00Z forecast = tomorrow night/day after tomorrow]

 

Day 3 U.S. precipitation forecast [12Z to 12Z forecast = day after tomorrow/night after tomorrow night] [00Z to 00Z forecast = night after tomorrow night/two days after tomorrow]