Potent atmospheric river threatens California, West Coast with flooding rain, high winds, mountain snow

Potent atmospheric river threatens California, West Coast with flooding rain, high winds, mountain snow

A potent atmospheric river will threaten California and much of the West Coast by midweek with flooding rain, high winds and mountain snow. NOAA's Weather Prediction Center has already issued a Level 2 out of 4 flash flooding risk for Wednesday in Northern California, with a Level 1 out of 4 risk posted for Thursday in Southern California.