Excessive Heat — Orange County Inland, California

2023-08-28 to 2023-08-30 · Orange County Inland, California

Event narrative

Very hot daytime temperatures occurred across inland portions of Orange County on August 28-30th, when Heat Advisories were in effect. Highs between 91 and 103 degrees occurred each day, with Yorba Linda and Anaheim seeing the hottest temperatures, both exceeding 100 degrees on the 28th and 29th.

Wider weather episode

An upper level area of high pressure caused very hot daytime temperatures to occur in late August 2023. It also caused the daily marine layer low clouds/fog to become more confined to the coast, which resulted in dense fog impacting San Diego International Airport for an extended period of time, resulting in a large number of delays.

Source: NOAA Storm Events Database, event_id 1133792. Narrative written by the NWS forecast office that issued the report.