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Heat is the culprit, thousands of people are without power in San Diego County

    SAN DIEGO (FOX 5/KUSI) — The heat wave plaguing Southern California will last at least another day and the power grid is doing everything it can to keep up.

    The National Weather Service (NWS) reports that record high temperatures will continue through Monday evening in all parts of San Diego County.

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    An extreme heat warning is in effect until 8 p.m. Monday for the San Diego Valley areas, including Santee, El Cajon, Escondido, La Mesa, Poway and San Marcos, with temperatures expected to range from 100 to 110 degrees Fahrenheit.

    While coastal areas of San Diego are under heat warnings through 8 p.m. Monday — San Diego, Oceanside, Vista, Chula Vista, Carlsbad, Encinitas and National City. NWS says high temperatures are expected in the upper 80s and low 90s near the coast, and 90 to 100 degrees just a few miles inland.

    NWS forecast for Southern California on Monday as heat warnings remain in effect (Photo: National Weather Service)NWS forecast for Southern California on Monday as heat warnings remain in effect (Photo: National Weather Service)

    NWS forecast for Southern California on Monday as heat warnings remain in effect (Photo: National Weather Service)

    As San Diego's power grid scrambles to keep up with demand for electricity amid record temperatures, tens of thousands of people in the region were left without power on Sunday.

    A spokesperson for San Diego Gas and Electric (SDG&E) told FOX 5/KUSI Sunday afternoon that he believes the heat is related to the widespread power outages in the region, but he is still investigating the cause.

    The spokesperson also took the opportunity to thank customers for their patience and said SDG&E crews are working day and night in the heat to restore power to everyone affected.

    Heat wave in Southern California brings record temperatures to these areas

    According to SDG&E, more than 10,000 people in the Jamaica region were without power on Sunday.

    SDG&E's power outage map shows power outages in San Diego County on Sunday as record heat continues to batter the region (Photo: SDG&E) SDG&E's power outage map shows power outages in San Diego County on Sunday as record heat continues to batter the region (Photo: SDG&E)

    SDG&E's power outage map shows power outages in San Diego County on Sunday as record heat continues to batter the region (Photo: SDG&E)

    As of 5 p.m. Sunday, the SDG&E Outage Map reports the following outages in San Diego County:

    • San Juan Capistrano

    • City Heights/Chollas Creek/Oak Park

    • University Heights/North Park/Normal Heights

    • Granite Hills/Bostonia/E El Cajon

    • N-view

    • Mysterious

    • The Cajon

    • City Heights/Chollas Creek/Oak Park

    • City Heights/Chollas Creek/Oak Park

    • University Heights/North Park/Normal Heights

    • Fletcher Hills/El Cajon

    • Blossom Valley/El Monte

    • Lemon grove

    • NE Escondido/Dixon Lake/Daley Ranch

    • University Heights/North Park/Normal Heights

    • Lemon grove

    • La Presa/ Spring Valley/ Rancho San Diego

    SDG&E reports that most of these outages are weather related, with the remainder still under investigation.

    Meanwhile, many areas of Southern California have been experiencing severe weather amid the high temperatures, with parts of the county experiencing thunderstorms with high winds, heavy rain and hail this weekend.

    If the power goes out during extreme heat, there are several steps you can take to stay cool.

    According to the CDC, residents can wear light clothing, keep their homes cool with battery-powered fans, drink plenty of fluids, exercise less, take cold showers, keep refrigerators and freezers closed to preserve food, close blinds and curtains to keep the sun out, and find alternative ways to prepare food, such as grilling outdoors.

    For more information about what to do in the event of a power outage in warm weather, call 800-CDC-INFO.

    People in San Diego County affected by the outage can find more information, check the status of an outage, and report an outage via SDG&E's power outage map.

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