Southern California is bracing for an intense heat wave this week, with temperatures projected to reach perilous heights. The National Weather Service has issued an extreme heat warning that will be in place from Tuesday at 10 a.m. to Thursday at 8 p.m., with the peak heat expected on Wednesday.
L.A. County: Interior valleys and mountainous areas might experience temperatures soaring into the triple digits, nearing 110 degrees in some locations. Inland coastal zones, including downtown Los Angeles, could see temperatures in the upper 90s, while beach areas are likely to reach the upper 80s, potentially hitting 90 degrees.
Orange County: Most inland areas are anticipated to be in the 90s, with some spots possibly reaching 100 degrees. Beach temperatures in O.C. are expected to remain slightly cooler, around 80 degrees.
The Inland Empire: Riverside and San Bernardino Counties should brace for temperatures over 100 degrees, with certain areas approaching 110 degrees.
The Coachella Valley: A heat warning isn’t in place here, but desert highs could climb to 115 degrees.
The soaring temperatures pose a significant risk of heat-related illnesses, especially for vulnerable groups such as seniors, young children, and others sensitive to heat. Those working outdoors or lacking air conditioning are also at higher risk. “The biggest concern is heat exhaustion or even heat stroke,” stated Devin Black, a meteorologist with the NWS office in Oxnard. “Best course of action is: try to stay hydrated and stay indoors as much as possible. If you have to go outside, limit your activity.”
In addition to health risks, the heat wave is expected to heighten wildfire risks, with the greatest danger anticipated late Wednesday. This heat wave follows a hot, humid weekend, with a pre-existing heat advisory from the National Weather Service that will remain until the extreme heat warning takes effect Tuesday morning.
The humidity factor
This week’s heat is compounded by high humidity, making conditions feel muggier than usual. Many Southern Californians experienced this over the weekend, with overcast skies and occasional rain contributing to the damp air. The humidity will exacerbate the heat as the week progresses, keeping nights warm and offering little relief from daytime heat.
The current heat is largely due to a high-pressure system over the southwestern U.S. This system traps and compresses warm air, further increasing temperatures. Positioned to the northeast of Southern California, the system draws tropical moisture from Mexico, boosting humidity levels.
Such monsoonal moisture is typical for this season, yet the combination of high humidity, warm offshore winds, and a diminished marine layer are driving this week’s unusually high temperatures, as explained by National Weather Service meteorologists. Relief is expected by the weekend, with temperatures predicted to drop back into the 80s, although humidity might persist.
Need a place to get out of the heat?
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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 pets
- 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 people
Check in frequently with family, friends, and neighbors. Offer assistance or rides to those who are sick or have limited access to transportation. Pay special attention to those 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 (e.g., “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,” the CDC recommends).
Original Story at laist.com