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Excessive Heat in Riverside County Mountains, California
Excessive Heat August 28, 2023 – August 30, 2023 · Riverside County Mountains, California
What the National Weather Service wrote
Very hot daytime temperatures occurred across the Riverside County Mountains on August 28-30th, when Heat Advisories were in effect. Highs in the lower 90s to just over 100 degrees occurred, with Anza and Idyllwild seeing the warmest temperatures.
The wider storm
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 1133795. Narratives are written by the National Weather Service forecast office that issued the report.
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