Dry, windy conditions heightened the risk of wildfire in San Diego County Friday at the same time as big waves threatened the coastline, meteorologists said.
The National Weather Service issued a red flag warning for the inland valleys and mountain areas until 8 p.m., saying sustained east winds of 15 to 30 miles per hour and gusts up to 45 mph were likely, along with 10 to 15 percent humidity.
A red flag warning is the agency's most serious fire-related warning. A less-serious wind advisory signaling winds that could make driving difficult was also in effect Friday for the inland valleys and mountain areas. The wind advisory was scheduled to expire at 2 p.m.
Along the coast, a high surf advisory was scheduled from 2 a.m. Friday to 2 a.m. Sunday.
The weather service said widespread waves of 7 to 10 feet and occasional sets of up to 12 feet were likely south of Del Mar. Strong rip currents and beach erosion were also expected.
"High surf and strong rip currents will be dangerous for swimmers, especially those that are inexperienced,'' an NWS advisory said. "Moderate to significant beach erosion is likely.''
The agency also said that the large waves may pose a threat to people standing on jetties, rocks or sea walls near the water's edge.
