
Severe Threats to Hit Tornado Alley, Upper Midwest
Severe storms are set to rumble from the Texas Panhandle to Lake Superior today.
# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT FRIDAY HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT THIS MORNING # DETAILS -------------------- WHAT For the Heat Advisory, temperatures up to 98. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 112 expected. WHERE A portion of southwest California. WHEN For the Heat Advisory, until 10 AM PDT this morning. For the Extreme Heat Warning, from 10 AM this morning to 8 PM PDT Friday. IMPACTS Heat related illnesses increase significantly during extreme heat events. ISSUED AT Tuesday, August 25, 2026 at 12:02 AM PDT ISSUED BY National Weather Service Los Angeles/Oxnard CA HEADER URGENT - WEATHER MESSAGE # 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. # AREAS AFFECTED -------------------- Southeastern Ventura County Valleys, Southern Ventura County Mountains, Western San Fernando Valley, Western Santa Monica Mountains Recreational Area, Calabasas and Agoura Hills, Central Ventura County Valleys, Eastern San Fernando Valley, Eastern San Gabriel Mountains, Eastern Santa Monica Mountains Recreational Area, Interstate 5 Corridor, Lake Casitas, Los Angeles County San Gabriel Valley, Ojai Valley, Santa Barbara County Interior Mountains, Santa Clarita Valley, Santa Susana Mountains, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range, Western San Gabriel Mountains and Highway 14 Corridor Including the cities of Warm Springs, East Los Angeles, El Monte, Universal City, San Rafael Mountain, Malibu Lake, Tejon Pass, The Angeles Crest Highway, Thousand Oaks, Topanga, Valencia, Westlake Village, Matilija, Piru, Lake Castaic, Mount Baldy, Figueroa Mountain, Newbury Park, Oak View, Sunland, Moorpark, Santa Paula, Ojai, Mount Wilson, Malibu Bowl, Mill Creek, La Canada Flintridge, Big Pine Mountain, Glendale, Meiners Oaks, Oat Mountain, Chatsworth, Wrightwood, Acton, Topatopa Mountains, Montecito Hills, Newhall, Gorman, Pomona, San Gabriel, Woodland Hills, Santa Clarita, Burbank, Fillmore, Pasadena, Simi Valley, Van Nuys, Rose Valley, Pyramid Lake, San Marcos Pass, and Northridge
# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT FRIDAY HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT THIS MORNING # DETAILS -------------------- WHAT For the Heat Advisory, temperatures up to 98. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 112 expected. WHERE A portion of southwest California. WHEN For the Heat Advisory, until 10 AM PDT this morning. For the Extreme Heat Warning, from 10 AM this morning to 8 PM PDT Friday. IMPACTS Heat related illnesses increase significantly during extreme heat events. ISSUED AT Tuesday, August 25, 2026 at 12:02 AM PDT ISSUED BY National Weather Service Los Angeles/Oxnard CA HEADER URGENT - WEATHER MESSAGE # 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. # AREAS AFFECTED -------------------- Southeastern Ventura County Valleys, Southern Ventura County Mountains, Western San Fernando Valley, Western Santa Monica Mountains Recreational Area, Calabasas and Agoura Hills, Central Ventura County Valleys, Eastern San Fernando Valley, Eastern San Gabriel Mountains, Eastern Santa Monica Mountains Recreational Area, Interstate 5 Corridor, Lake Casitas, Los Angeles County San Gabriel Valley, Ojai Valley, Santa Barbara County Interior Mountains, Santa Clarita Valley, Santa Susana Mountains, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range, Western San Gabriel Mountains and Highway 14 Corridor Including the cities of Warm Springs, East Los Angeles, El Monte, Universal City, San Rafael Mountain, Malibu Lake, Tejon Pass, The Angeles Crest Highway, Thousand Oaks, Topanga, Valencia, Westlake Village, Matilija, Piru, Lake Castaic, Mount Baldy, Figueroa Mountain, Newbury Park, Oak View, Sunland, Moorpark, Santa Paula, Ojai, Mount Wilson, Malibu Bowl, Mill Creek, La Canada Flintridge, Big Pine Mountain, Glendale, Meiners Oaks, Oat Mountain, Chatsworth, Wrightwood, Acton, Topatopa Mountains, Montecito Hills, Newhall, Gorman, Pomona, San Gabriel, Woodland Hills, Santa Clarita, Burbank, Fillmore, Pasadena, Simi Valley, Van Nuys, Rose Valley, Pyramid Lake, San Marcos Pass, and Northridge












