Excessive Heat, Soaring Temperatures Continue In San Diego County

SAN DIEGO, CA — Most of San Diego County remains under an excessive heat warning as temperatures continue to soar in the region.

An excessive heat warning is in effect until 9 p.m. Thursday for the mountains and valleys, and until 9 p.m. Friday for the deserts, according to the National Weather Service.

"The upper ridge is over Southern California and slowly shifting to the east. This will result in the hottest inland temperatures today and Thursday with a slow decrease late week and into the weekend," NWS San Diego forecasters wrote Wednesday. "The southerly flow behind the upper high will begin to draw in tropical moisture Friday which continues into Sunday. Fog and low clouds will persist along the coast due to the strong inversion under the warm air mass increasing inland on Friday."

Dangerously hot conditions and near-record high temperatures are expected between 115 to 120 degrees in the deserts, according to the NWS. High temperatures are expected between 95 to 105 degrees in the mountains, and between 95 to 100 degrees in the valleys.

"Heat-related illnesses increase significantly during extreme heat events," the NWS said.

Forecasters reminded residents to drink plenty of fluids, stay in air-conditioned rooms, stay out of the sun, and check on relatives and neighbors. Weather officials advised people to wear lightweight and loose-fitting clothing, and limit strenuous activities to early morning or evening.

Young children and pets should never be left unattended in vehicles under any circumstances.

"Anyone overcome by heat should be moved to a cool and shaded location," the NWS said. "Heat stroke is an emergency."