An excessive heat warning will be in effect through 8 p.m. Thursday for areas of San Diego County east of Interstate 15 as unseasonably warm weather spreads across most of California, the National Weather Service said.

A new wildfire was reported today at 2:17 p.m. in San Diego County. Imperial Fire has been burning on private land. Currently, there are no details on the containment or cause of the fire.

Residents in San Diego County valleys will continue to deal with sweltering early fall temperatures through 8 p.m. Thursday, forecasters said.

San Diego County is well set to meet water demands through water year 2025, even with La Niña conditions likely to replace wet El Niño weather this winter.

The Tijuana River has been polluted for decades, but in recent years, South San Diego residents say the smell — and their respiratory illnesses — has gotten worse.

The San Diego County Water Authority, which brings in new leadership Tuesday, said that two consecutive wet winters have the area prepared for water needs, even with La Niña conditions likely to replace wet El Niño weather this winter.

A new wildfire was reported today at 5:45 p.m. in San Diego County. Arboleda Fire has been burning on private land. Currently, there is no data indicating the containment progress of the fire and its cause remains undetermined.

A fall heat wave is expected to overtake San Diego this week, sending temperatures soaring potentially into triple digits for some communities, according to forecasters.

Residents in San Diego County valleys will continue to deal with sweltering early fall temperatures through 8 p.m. Thursday, forecasters said.