WWUS76 KSGX 230443 NPWSGX URGENT - WEATHER MESSAGE National Weather Service San Diego CA 943 PM PDT Sat Aug 22 2026 CAZ061-062-065-231315- /O.CON.KSGX.XH.W.0008.000000T0000Z-260829T0300Z/ Coachella Valley-San Diego County Deserts-San Gorgonio Pass near Banning- Including the cities of Indio, Coachella, Palm Springs, Palm Desert Country, Cathedral City, La Quinta, Palm Desert, and Borrego Springs 943 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... * WHAT...Dangerously hot conditions with temperatures of 110 to 117. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Overnight temperatures 5 to 8 degrees above normal will limit relief from the heat. 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. && $$ CAZ048-050-056>058-554-231315- /O.CON.KSGX.HT.Y.0010.000000T0000Z-260825T1700Z/ /O.CON.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/ San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Valleys-Riverside County Mountains-Santa Ana Mountains and Foothills-San Diego County Mountains-Orange County Inland Areas- Including the cities of Poway, Santee, Fontana, Orange, Escondido, San Bernardino, Santa Ana, Garden Grove, Ontario, San Marcos, Anaheim, Fullerton, Mission Viejo, Pine Valley, Idyllwild-Pine Cove, Corona, Irvine, Julian, Moreno Valley, Riverside, La Mesa, El Cajon, and Rancho Cucamonga 943 PM PDT Sat Aug 22 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING... * WHAT...Temperatures 90 to 98 for Inland Orange County, 90 to 102 for the San Diego County Valleys, 100 to 107 for the Inland Empire and 89 to 100 in the mountains. Temperatures increase slightly for the middle and end of next week, making for a prolonged and dangerous stretch of heat. * WHERE...Orange County Inland Areas, Riverside County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Mountains, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Increasing temperatures into the middle of next week will increase the threat of heat-related illness across populations. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ CAZ055-231315- /O.CON.KSGX.HT.Y.0010.000000T0000Z-260825T1700Z/ /O.CON.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/ San Bernardino County Mountains- Including the cities of Running Springs, Crestline, Wrightwood, Big Bear Lake, Big Bear City, and Lake Arrowhead 943 PM PDT Sat Aug 22 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING... * WHAT...Temperatures 90 to 97. * WHERE...San Bernardino County Mountains above 6000 ft. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantlyduring extreme heat events. Hot temperatures may cause heat illnesses. 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. && $$ CAZ043-552-231315- /O.CON.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/ San Diego County Coastal Areas-Orange County Coastal Areas- Including the cities of San Diego, Costa Mesa, San Clemente, Carlsbad, Newport Beach, Huntington Beach, Encinitas, Vista, Laguna Beach, National City, Oceanside, and Chula Vista 943 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING... * WHAT...Temperatures 85 to 90. * WHERE...Orange County Coastal Areas and San Diego County Coastal Areas. * WHEN...From Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Overnight lows around 5 to 7 degrees above normal will limit relief from the heat, especially for those without adequate cooling. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ CAZ060-231315- /O.CON.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/ Apple and Lucerne Valleys- Including the cities of Hesperia, Lucerne Valley, Apple Valley, and Victorville 943 PM PDT Sat Aug 22 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING... * WHAT...Dangerously hot conditions with temperatures up to 108 possible and limited nighttime cooling. * WHERE...Apple and Lucerne Valleys. * WHEN...From Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. 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. && $$ SS