Temperatures across Southern California could soar into the 90s in many coastal and valley communities Thursday — about 25 degrees above normal — as a significant early-season heat wave grips the region.
“Based on the current forecast, many of the official climate sites will be very close to breaking daily records, and some may break them by 3 or more degrees,” forecasters said.
Meteorologists said a combination of strong high pressure, offshore flow and very warm air could push widespread temperatures into the 90s across coastal and valley areas Thursday afternoon.
Patchy fog may still develop along the coast during the morning hours before skies clear, forecasters said.
Some gusty Santa Ana winds could develop Thursday morning and early afternoon, though winds are expected to remain relatively light, the NWS said.
Heat risk is expected to increase to moderate levels across much of the coast and valleys, meaning heat-related illness may become more likely for sensitive populations.
The National Weather Service has issued a Heat Advisory for much of the region from 10 a.m. Thursday through 8 p.m. Friday.
Cal/OSHA urged employers Wednesday to take precautions to protect workers as temperatures rise across the state.
“This is one of the first heat waves of the year, with temperatures rising above the seasonal average,” the agency said in a statement. “Employees may not yet be acclimatized to high heat and may need additional breaks and interventions when they adapt to the conditions. Cal/OSHA reminds employers to be vigilant, especially with newer employees, and ensure that employees have shade, water and rest breaks to prevent heat illness.”
Forecasters said record or near-record heat may continue across inland areas into next week as high pressure remains over the region.