PROJECT ALERT NOTICE (CA) high flows in southern California

Date: Sun, 15 Jan 2023 16:53:54 EST

Summary: additional precipitation causing high flows in southern California

The latest storm brought additional precipitation to California over the last 24 hours. The highest amounts of 3 to 5 inches fell primarily in the mountains in and around Los Angeles, Orange, San Diego and west San Bernardino and Riverside Counties. The National Weather Service issued numerous flood, wind, and winter storm warnings and advisories in these areas. Coastal areas from San Francisco to San Luis Obispo are still under flood watches and warnings.

At the time of this writing, less than 20,000 people are without power. At least 18 people are reported to have died due to wind and flooding from the rapid series of storms that began Dec 31.

Today, the California Water Science Center sent 5 teams of 6 people total to measure high flows at coastal and Palm Springs streamgages to verify the upper ends of the ratings. In San Mateo County, a field person is measuring the outlet of Crystal Springs Reservoir in San Mateo County to update the rating.