Extreme Heat Warning
Status
Event Continued Active alertStart Time
Thu 08/21/2025 02:00 PM EDTEnd Time
Sun 08/24/2025 12:00 AM EDTSignificance
WarningImpacts
High impact
Full Alert Message
URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 157 AM PDT Thu Aug 21 2025 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM PDT SATURDAY... * WHAT...Dangerously hot conditions with temperatures of 95 to 110 degrees expected. * WHERE...A portion of southwest California. * WHEN...From 11 AM this morning to 9 PM PDT Saturday. * IMPACTS...There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. Monitor the latest forecasts and warnings for updates.
Technical Header
CAZ038-088-342>345-348-353-369-371>383-548-220900- /O.CON.KLOX.XH.W.0002.250821T1800Z-250824T0400Z/ Cuyama Valley-Santa Clarita Valley-Santa Lucia Mountains-Southern Salinas Valley-San Luis Obispo County Interior Valleys-San Luis Obispo County Mountains-Santa Ynez Valley-Santa Barbara County Interior Mountains-Western Santa Monica Mountains Recreational Area-Calabasas and Agoura Hills-Western San Fernando Valley- Eastern San Fernando Valley-Southeastern Ventura County Valleys- Santa Susana Mountains-Southern Ventura County Mountains-Northern Ventura County Mountains-Interstate 5 Corridor-Western San Gabriel Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-Western Antelope Valley Foothills-Eastern Antelope Valley Foothills-Antelope Valley-Los Angeles County San Gabriel Valley- Including the cities of Mill Creek, Chatsworth, Mount Baldy, Sunland, Creston, La Canada Flintridge, Topatopa Mountains, Palmdale, Valencia, San Gabriel, Northridge, Burbank, Los Olivos, Malibu Bowl, Big Pine Mountain, Gorman, Newbury Park, Hearst Castle, Atascadero, Lake Los Angeles, Lake Castaic, Van Nuys, Llano, Universal City, La Panza Range, Moorpark, Lockwood Valley, Wrightwood, Valyermo, Thousand Oaks, Santa Clarita, East Los Angeles, Templeton, Oat Mountain, Pasadena, Matilija, Lake Nacimiento, Ozena, Glendale, Woodland Hills, Newhall, Westlake Village, Lancaster, San Miguel, Pomona, Simi Valley, Malibu Lake, Warm Springs, San Rafael Mountain, Acton, Santa Ynez, The Angeles Crest Highway, Santa Margarita Lake, Pyramid Lake, Elizabeth Lake, Mount Wilson, Caliente Range, New Cuyama, Carrizo Plain, Mount Pinos, Lake Palmdale, El Monte, Paso Robles, Solvang, Shandon, Lake Cachuma, Tejon Pass, Rose Valley, Pearblossom, Figueroa Mountain, and Irish Hills 157 AM PDT Thu Aug 21 2025
