271 WWUS76 KLOX 211848 NPWLOX URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 1148 AM PDT Sun Jun 21 2026 CAZ088-372-373-379-380-548-260400- /O.UPG.KLOX.XH.A.0002.260623T1500Z-260626T0400Z/ /O.NEW.KLOX.HT.Y.0007.260623T1500Z-260626T0400Z/ Santa Clarita Valley-Western San Fernando Valley-Eastern San Fernando Valley-Western San Gabriel Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-Los Angeles County San Gabriel Valley- Including the cities of Pomona, Newhall, Burbank, Mount Wilson, La Canada Flintridge, Sunland, Pasadena, Van Nuys, Valencia, Warm Springs, Northridge, El Monte, Mill Creek, Glendale, East Los Angeles, Wrightwood, Universal City, Acton, San Gabriel, The Angeles Crest Highway, Mount Baldy, Woodland Hills, Chatsworth, Lake Castaic, and Santa Clarita 1148 AM PDT Sun Jun 21 2026 ...HEAT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 9 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to the middle to upper 90s possible. Hottest Wednesday. * WHERE...Eastern San Fernando Valley, Eastern San Gabriel Mountains, Los Angeles County San Gabriel Valley, Santa Clarita Valley, Western San Fernando Valley, and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...From 8 AM Tuesday to 9 PM PDT Thursday. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors. * ADDITIONAL DETAILS...Higher humidity will have the potential to add to the heat discomfort in the afternoons. Temperatures are expected to cool slightly after Thursday but will remain well above normal through the weekend. 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. 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. && $$ CAZ368-260400- /O.UPG.KLOX.XH.A.0002.260623T1500Z-260626T0400Z/ /O.NEW.KLOX.HT.Y.0007.260623T1500Z-260626T0400Z/ Los Angeles County Inland Coast including Downtown Los Angeles- Including the cities of Culver City, Hollywood, Norwalk, Downey, Beverly Hills, and Compton 1148 AM PDT Sun Jun 21 2026 ...HEAT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 9 PM PDT THURSDAY... * WHAT...Unseasonably hot conditions with temperatures up to the mid to upper 80s possible in Downtown Los Angeles and the low 80s in Inglewood. Hottest Wednesday. * WHERE...Los Angeles County Inland Coast including Downtown Los Angeles. * WHEN...From 8 AM Tuesday to 9 PM PDT Thursday. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors. * ADDITIONAL DETAILS...Higher humidity will have the potential to add to the heat discomfort in the afternoons. Temperatures are expected to cool slightly after Thursday but will remain above normal into next weekend. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ Visit us at http://www.weather.gov/LosAngeles NWS Los Angeles/Oxnard