529 WWUS76 KSGX 121900 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1200 PM PDT Sun Jul 12 2026 CAZ043-048-050-055>058-065-552-554-130500- /O.NEW.KSGX.XH.A.0004.260714T1700Z-260717T0300Z/ San Diego County Coastal Areas-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Valleys-San Bernardino County Mountains-Riverside County Mountains-Santa Ana Mountains and Foothills-San Diego County Mountains-San Gorgonio Pass near Banning-Orange County Coastal Areas-Orange County Inland Areas- Including the cities of Orange, Garden Grove, La Mesa, Big Bear City, Running Springs, San Marcos, Chula Vista, El Cajon, Ontario, Riverside, San Diego, Big Bear Lake, Idyllwild-Pine Cove, Poway, Oceanside, Pine Valley, Fontana, Moreno Valley, San Clemente, Santa Ana, San Bernardino, Laguna Beach, Anaheim, Corona, Santee, Escondido, Julian, Mission Viejo, Wrightwood, Encinitas, Fullerton, Crestline, Lake Arrowhead, Vista, Rancho Cucamonga, Costa Mesa, Irvine, National City, Huntington Beach, Newport Beach, and Carlsbad 1200 PM PDT Sun Jul 12 2026 ...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Hot and humid conditions with elevated overnight temperatures. High temperatures will range from the 90s in the mountains below 6,000 feet, 95 to 105 or more for inland valleys, and 80s for areas near the coast. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Mountains, San Diego County Valleys, San Gorgonio Pass near Banning, and Santa Ana Mountains and Foothills. * WHEN...From Tuesday morning through Thursday evening, hottest on Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. 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. Limit outdoor recreation during the daytime hours. && $$ APR