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Potentially Dangerous Temps Expected During Heat Wave


The first major heat wave of the summer is expected to bring sweltering, potentially dangerous temperatures to San Diego County Friday, the National Weather Service said. 

An excessive heat warning was issued by the National Weather Service for the deserts and foothills while a heat advisory is also in effect until 9 p.m. Friday for communities like Vista, Chula Vista, National City and San Diego.

Extreme temperatures are due to high pressure building over the country’s southwest region, the NWS said. 

While the advisory is in effect, elevated temperatures and high humidity can create dangerous situations where heat-related illnesses are common.

The Weather Channel says humidity in San Diego will be around 45 percent during this period of extreme heat.

San Diego’s coastal areas will likely see temperatures in the 90s and inland areas can expect temperatures breaking 100 degrees Friday and Saturday, NBC 7’s weather anchor Whitney Southwick said.

San Diego’s valleys are expected to be between 102 and 107 degrees. Temperatures around the coast will be anywhere from 85-95 degrees and mountains will see temperatures up to 105 degrees.

Escondido, Ramona and Alpine are expected to see temperatures more than 20 degrees above average for this time of year. Those areas may see high temperatures that break their current records, the NWS said. 

A NWS high surf advisory is also in effect for San Diego’s coastline until 9 p.m. Friday, which means high surf and strong currents could create dangerous conditions for swimmers. 

“If you’re headed to the beach to find some relief in the water, remember there is still high surf, especially in the north county,” Southwick said.

During the advisory period, surf may reach up to 8 feet with some swells up to 12 feet.

The immediate coast and mountains above 6,000 feet will not experience the same extreme weather but there is a slight chance they will be met with thunderstorms, Southwick said.

According to the National Weather Service’s heat watch map, potential heat risks are in the moderate to high range for most of San Diego County, while parts of Los Angeles rank as very high.

In order to prepare for the heat, the National Weather Service suggests residents drink plenty of water and stay in air-conditioned rooms when possible.

Avoiding prolonged sun exposure and checking in on neighbors and relatives are also advisable.

Southwick said some relief is ahead. Temperatures Saturday, while still above average and sweltering, are expected to be about 10 degrees cooler than Friday.  


Source: NBC San Diego

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