Extreme Heat and Coastal Flood Advisories Issued for San Diego County
San Diego County is under multiple weather advisories this weekend, including an extreme heat warning and a coastal flood advisory. The extreme heat warning, which began Thursday, affects the deserts and mountains through 8 p.m. Sunday, with inland valleys joining the warning on Friday. Coastal areas are under a heat advisory through Sunday. Additionally, a high surf advisory is in effect until 5 p.m. Saturday, with waves reaching 5 to 8 feet and sets up to 9 feet at south-facing beaches like Mission Beach and Windansea Beach. A coastal flood advisory is also active until 3 p.m. Saturday, with potential flooding in low-lying beach parking lots, boardwalks, and roads due to onshore winds and high tides (NBC 7 San Diego, 2026-07-30).