SAN DIEGO – It’s shaping up to be a warm week as temperatures soar 20 degrees above average for parts of the region.

The biggest warm-up is expected in the inland valleys and lower deserts Tuesday as the marine layer thins out and high-pressure builds. A weak coastal eddy will favor patchy low clouds along the beach tonight and Wednesday morning, but clouds will almost disappear for the second half of the workweek.

Thursday will likely be the warmest day, especially at the coast where temperatures will reach the upper 80s and upper 90s with the possibility of temps going up into the 100s in East County.

This has triggered a heat advisory for our beaches and inland valleys starting Wednesday at 11 a.m. until Friday at 6 p.m.

Chula Vista, El Cajon, Lake Cuyamaca, and Palomar Mountain are on track to break temperature records on Thursday. Record highs also are possible Friday in San Diego, Escondido, El Cajon, Alpine and Big Bear Lake.

Gusty Santa Ana winds return Wednesday and Thursday. For now, they are below advisory levels.
Sunday and early next week will be much cooler as a low-pressure system develops, bringing with it windy conditions and our next chance of rain.