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Damaging wind gusts expected in San Diego County Monday

A high wind warning was issued from 11 a.m. Monday to 3 a.m. Tuesday in the mountains and deserts, the National Weather Service said.

SAN DIEGO COUNTY, Calif. — Windy and cooler conditions expected Monday as a cold trough deepens, the National Weather Service said.

Damaging wind gusts were possible over the mountains on Monday, with gale force winds and rough seas into the coastal waters.

A wind advisory was issued by the weather service from 1 p.m. Monday to 3 a.m. Tuesday for San Diego County coastal and valley areas. A high wind warning was issued from 11 a.m. Monday to 3 a.m. Tuesday in the mountains and deserts. The mountains could get winds of 20-30 mph with gusts of 50-60 mph in more wind-prone areas.

Credit: KFMB Weather
Credit: KFMB

The Mountain Empire Unified School District announced a one-day closure due to weather on Monday. Click here to monitor SDG&E for outages.

Winds over the coastal waters were forecast to be very strong Monday, which may impact oil clean-up operations.

The cold front should race past Monday evening and the winds were expected to shift north-northeast Monday night. The strong winds were predicted to be confined mostly to the mountains.

An incoming west-northwest swell of 6-10 feet may generate elevated surf at San Diego beaches Monday and Tuesday. Surf of 3-6 feet was expected, with local sets to seven feet possible late Monday night.

Credit: KFMB Weather

A stronger round of northwest winds was expected Monday and Tuesday, with northwest winds of 25-30 knots and gusts of 35-40 knots, strongest later Monday, the NWS said. Combined seas were predicted to reach 10 to around 12 feet across the outer waters.

After a cool day Tuesday, temperatures start trending upward Wednesday and Thursday as high pressure starts to rebuild over the Southwest.

Friday was forecast to be warm with coastal highs in the 70s, valley highs in the 80s, mountain highs in the 50s and 60s, high desert highs in the 70s and the low deserts in the upper 80s.

There's also a 20% chance of rain in the mountain areas.

NWS officials said the gusty winds could make driving difficult for high profile vehicles, and they warned that tree limbs may fall and cause power outages. People also are urged to secure all outdoor objects that could blow away.

RELATED: Cooler temperatures and gusty winds on tap for beginning of the week