Overview
- The National Weather Service posted a flash flood warning for southwestern San Diego County from 6:33 a.m. to 9:30 a.m. on New Year’s Day.
- Flood advisories were issued earlier for Los Angeles County until 8:15 a.m. and for Riverside, San Bernardino, and Orange counties until 7:06 a.m.
- Forecasters reported about 1.5 inches of rain in parts of San Diego County with rainfall rates projected at 0.25 to 0.75 inches per hour.
- Areas flagged included urban low spots, underpasses, small creeks and arroyos, and named waterways such as the San Diego, Otay, Tijuana, and San Dieguito rivers and San Diego Bay.
- Officials urged residents to avoid floodwater and not drive through flooded roads, repeating the guidance to “Turn around, don’t drown.”