A heat advisory has been issued for the 5 Freeway corridor north of Los Angeles and surrounding regions, with temperatures expected to reach up to 107 degrees. According to the National Weather Service in Los Angeles/Oxnard, California, the advisory takes effect on Sunday at 10 a.m. and remains valid until Tuesday, August 25, at 10 a.m., following an initial notice issued on Saturday at 2:25 p.m.
Affected Locations and Regional Scope
The National Weather Service notes that heat-related illnesses increase significantly during extreme heat events. The advisory covers a broad geographic span across Southern California. The complete list of affected locations includes the 5 Freeway corridor near Santa Clarita, the Santa Clarita Valley, the Santa Ynez Mountains Western Range, the Santa Ynez Mountains Eastern Range, and the Santa Barbara County Interior Mountains.
Additional zones under the advisory include Lake Casitas, the Ojai Valley, Central Ventura County Valleys, the Western Santa Monica Mountains Recreational area, the Eastern Santa Monica Mountains Recreational area, Calabasas/Agoura Hills. The San Fernando Valley, Southeastern Ventura County Valleys, Santa Susana Mountains, Southern Ventura County Mountains, the Western San Gabriel Mountains/Highway 14 Corridor, the Eastern San Gabriel Mountains, and the San Gabriel Valley are also included in the official warning.
Did You Know? An individual exposed to high heat may produce as much as 2 to 3 gallons of sweat per day, according to safety guidance from the Environmental Health and Safety office at UC Irvine.
Recommended Safety Guidelines and Hydration Strategies
To mitigate health risks during the multi-day heat event, the Environmental Health and Safety office at UC Irvine outlines several essential precautions. Drinking plenty of water frequently is vital for anyone exposed to heat. To replenish fluids lost through heavy perspiration, individuals should consume 3 to 4 cups of water every hour.
Experts also advise taking breaks in cool, shaded areas during the day to allow the body time to recover. Residents should avoid or limit alcohol and caffeine consumption, as both substances dehydrate the body. Anyone experiencing symptoms such as nausea, dizziness, weakness, or unusual fatigue should stop, rest in a shaded spot, and seek immediate medical attention if symptoms persist or worsen.
Clothing choices can also impact safety. Whenever possible, wear clothing that provides protection from the sun but allows airflow to the body. Protect your head and shade your eyes when outdoors. Furthermore, when in the heat be sure to pay extra attention to those you’re with and be sure you know how to call for medical attention.
Cooling Centers and Emergency Resources
For information regarding cooling centers operated by Los Angeles, Orange, Riverside and San Bernardino counties, residents can consult official county resources. Information is available through Los Angeles County at https://ready.lacounty.gov/heat/, Orange County at https://ocgov.com/cooling-centers, Riverside County at https://capriverside.org/cool-centers and DPH.
For more local weather alerts, visit our Weather Advisory page.
Frequently Asked Questions
When is the heat advisory active?
The advisory begins on Sunday 10 a.m. until Tuesday Aug. 25, at 10 a.m.
How hot are temperatures expected to get?
According to the NWS Los Angeles/Oxnard CA, temperatures up to 107 degrees expected.
How much water should a person drink per hour in extreme heat?
Safety guidelines recommend drinking 3 to 4 cups of water every hour to replenish fluids.
What steps are you taking to stay cool and safe during this upcoming period of extreme heat?
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