Los Angeles County is the focus of an extreme heat warning released at 10:49 a.m. on Tuesday by the National Weather Service. The warning is valid from Wednesday 8 a.m. until Thursday Sept. 10, at 8 p.m.
“Temperatures of 88 to 108 degrees expected,” the NWS Los Angeles/Oxnard CA said. “Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas, except likely peaking Thursday for the Santa Barbara South Coast.”
“Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses,” according to the NWS.
The full list of affected locations includes:
- Santa Clarita Valley
- Santa Susana Mountains
- Cuyama Valley
- San Luis Obispo County Beaches
- San Luis Obispo County Inland Central Coast
- Santa Lucia Mountains
- Southern Salinas Valley
- San Luis Obispo County Interior Valleys
- San Luis Obispo County Mountains
- Santa Barbara County Central Coast Beaches
- Santa Barbara County Inland Central Coast
- Santa Ynez Valley
- Santa Barbara County Southwestern Coast
- Santa Barbara County Southeastern Coast
- Santa Ynez Mountains Western Range
- Santa Ynez Mountains Eastern Range
- Santa Barbara County Interior Mountains
- Ventura County Beaches
- Ventura County Inland Coast
- Lake Casitas
- Ojai Valley
- Central Ventura County Valleys
- Southeastern Ventura County Valleys
Emergency alerts in Southern California
For “considerable or catastrophic” hazards, emergency alerts will be sent to all enabled mobile phones in the area. To monitor lesser risk, residents are advised to sign up for county alert systems and to monitor agencies’ social media. How to sign up for alerts in your area:
Staying safe in high temperatures
Safety tips from the Environmental Health and Safety office at UC Irvine:
- Drink water: Drinking plenty of water frequently is vital for those exposed to heat. An individual may produce as much as 2 to 3 gallons of sweat per day. To replenish that fluid you should drink 3 to 4 cups of water every hour.
- Take breaks: Taking breaks in a cool shaded area and allowing time for recovery from the heat during the day are effective ways to avoid heat-related illness.
- Avoid some beverages: Avoid or limit the use of alcohol and caffeine during periods of extreme heat. Both dehydrate the body.
- Stop and rest: If you start to feel symptoms such as nausea, dizziness, weakness or unusual fatigue, rest in a cool shaded area. If symptoms persist or worsen seek immediate medical attention.
- Clothing: 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.
- Be prepared: 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.
For information about cooling centers operated by Los Angeles, Orange, Riverside and San Bernardino counties, see https://ready.lacounty.gov/heat/, https://ocgov.com/cooling-centers, https://capriverside.org/cool-centers and DPH.
For more local weather alerts, visit our Weather Advisory page