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Climate & Environment

Your SoCal weather report for Thursday, July 18: Extreme heatwave starts tomorrow

A geothermal map of SoCal in shades of orange, yellow and green with white numbers over different cities.
Extreme heat will come tomorrow.
(
Courtesy NWS
)

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Quick Facts

  • Today’s weather: Warm, sunny
  • Beaches: 70s
  • Mountains: 80s-90s
  • Deserts: 100-112
  • Inland: 90-100
  • Warnings and advisories: Beach Hazards statement, Excessive Heat watch

Yes, you read that headline right — another extreme heatwave kicks off tomorrow. Let's dig into it.

Today's temperatures will be similar to yesterday with a few degrees of warming over in the inland areas. Coastal areas will see highs in the 70s, up to the mid 80s for the inland coast and inland Orange County. A beach hazard statement regarding high surf remains in effect until tonight for the beaches from Ventura County south to San Diego County.

Highs for the valleys will be in the upper 80s to low 90s, mainly in the 90s to 100 degrees for Santa Clarita Valley and up to 103 degrees for the Inland Empire.

Meanwhile in the desert, between 100 to 108 degrees for high desert, and up to 112 degrees for Coachella Valley.

Tonight's lows will drop to the mid 60s, 70s for the deserts.

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About the heat

Forecasters have issued an excessive heat warning for much of the region's interior mountains, foothills, valleys away from the coast and deserts starting tomorrow morning through Wednesday. Temperatures are expected to reach between 95 to 105 degrees.

There's also a chance of dry lightning and thunderstorms these next couple of days which could spark wildfires.

Staying safe in the heat

  • Don't wait until you're thirsty to drink water or electrolyte-replacements
  • Drink cool water, not extremely cold water (which can cause cramps)
  • Avoid sweetened drinks, caffeine, and alcohol

Protect a pet from excessive heat

  • Never leave a pet or animal in a garage
  • Never leave a pet or animal in a vehicle
  • Never leave a pet or animal in the sun
  • Provide shade
  • Provide clean drinking water

Protect a human from excessive heat

Check in frequently with family, friends, and neighbors. Offer assistance or rides to those who are sick or have limited access to transportation. And give extra attention to people most at risk, including:

  • Elderly people (65 years and older)
  • Infants
  • Young children
  • People with chronic medical conditions
  • People with mental illness
  • People taking certain medications (i.e.: "If your doctor generally limits the amount of fluid you drink or has you on water pills, ask how much you should drink while the weather is hot," says the CDC)

This day in history

On this day in 1940, President Franklin Roosevelt was nominated for an unprecedented third term.

Things to do

  • Guster: Hits & Bits: Guster made a decent-sized splash in the late '90s and early 2000s, and the Boston-area band has continued to make good music and figure out unique ways to speak to their audience as they age together – partnering with comedy shows, making music for TV shows, and of course releasing new albums. The Dynasty Typewriter show promises a mix of music and comedy, with special guests Madison Cunningham, Chris Fleming, Greg Hess, Holly Laurent, Rory Scovel, and Beth Stelling.

Check out our full list of things to do this week.

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