Excessive Heat Warning as Southern California Temperatures Spike

Laura Christensen
August 29, 2017

Record-breaking heat is expected to descend upon Southern California Monday, with temperatures ratcheting up over the next three days and remaining high but tapering off just a bit through the end of the week.

A heat advisory will be in effect for coastal San Diego County from 10 a.m. Monday to 10 p.m. Wednesday.

As triple-digit temperatures ramp up across San Diego County this weekend, the National Weather Service has issued a heat advisory that will remain in place through early next week.

The high today for Fallbrook is expected to hit 89 degrees, but by Tuesday, highs are predicted to hit triple digits.

The weather service attributed the heat wave to a "strong upper-level high-pressure system over the region combined with weakening onshore flow".

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On Tuesday, San Diego is forecasted to hit 91 degrees, which would break the previous August 29 record of 88.

Alpine also set a new record low of 76 degrees on Thursday, while both Vista and Ramona both tied their previous records for the day.

Temperatures reached 106 in Woodland Hills on Sunday and 105 in Lancaster.

A grueling, scorching heat wave is expected to grip the county at least throughout the week, with highs of 108 and 107 expected Monday and Tuesday, respectively. Highs will hover around the 100 degree mark for the remainder of the week.

The NWS said it is certain that even coastal areas "will also warm significantly during this heat wave, with highs mostly in the 80s near the beaches and between 90 and 100 across inland portions of the coastal plain, including Downtown Los Angeles". "Some heat related illnesses are serious enough to require hospitalization and could become fatal if left untreated".

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