Between 2026-08-01 and 2026-08-02, the National Weather Service issued extreme heat warnings for Southern California and hazardous seas warnings for coastal Oregon and Northern California. Antelope Valley temperatures reached 105–112°F, while coastal waters faced gale-force winds to 45 knots and seas of 10–15 feet through August 4.
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* WHAT...Dangerously hot conditions with temperatures of 95 to 106 expected. * WHERE...Interstate 5 Corridor and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Heat hazards may extend into next week for portions of the region.
this outlet adds: antelope, valley, eastern, foothills
this outlet adds: large, portion, southwest, california, including, coastal, ranges, adjacent
* WHAT...Temperatures of 85 to 105 expected. * WHERE...A portion of southwest California near the coast including the beaches. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Heat hazards may extend into next week for portions of the region.
this outlet adds: eastern, gabriel, mountains
* WHAT...Temperatures to 105 will produce moderate to major heat risk. * WHERE...Northern Mendocino Interior, Lake County, and Southeastern Interior Mendocino. * WHEN...From 11 AM Monday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Hot daytime conditions with high temperatures between 102 and 110 common. Warm overnight conditions will bring less relief than usual. * WHERE...Antelope Valley and nearby foothills. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those act
this outlet adds: interstate, corridor, western, gabriel, mountains, highway, evening, additional
this outlet adds: except, localized, hottest, locations, valleys, mountains, ventura, santa
* WHAT...Very warm daytime conditions with high temperatures between 95 and 105 common, except 80 and 90 common at the coast. Warm overnight conditions will bring less relief than usual. * WHERE...Los Angeles County Beaches, Ventura County Coast, Santa Barbara County South Coast, Santa Lucia Mountains, Santa Ynez Valley, and the Northern Ventura County Mountains. * WHEN...Until 8 PM PDT this eveni
this outlet adds: expected, portion, southwest, california, near, including
* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to near 100 expected. * WHERE...San Diego County Mountains. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
this outlet adds: east, interstate, orange, inland, areas, evening
this outlet adds: western, valleys, foothills, evening
this outlet adds: apple, lucerne, valleys, evening, additional, details, range, valley
this outlet adds: upper, bernardino, riverside, valleys, inland, empire
this outlet adds: below, 7000, feet, riverside
this outlet adds: santa, foothills, evening
this outlet adds: coachella, valley, deserts, gorgonio, pass, banning
* WHAT...Dangerously hot conditions with highs 110 to 120 degrees across the Mojave Desert. Highs 95 to 105 degrees across most of the southern Great Basin and Arizona Strip. Little to no overnight relief is expected, particularly in the Mojave Desert where lows of 80 to 95 degrees are forecast. This will result in Major-to-Extreme Heat Risk. * WHERE...Portions of northwest Arizona, southeast Cali
* WHAT...Dangerously hot conditions with several days of Major to Extreme heat risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures up to 112 degrees. Overnight lows will range from 7
* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 11 ft. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 NM. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
* WHAT...For the Gale Warning, north winds 25 to 35 kt with gusts up to 45 kt and seas 10 to 15 ft at 9 seconds. For the Hazardous Seas Warning, very steep and hazardous seas 8 to 12 ft at 9 seconds expected. * WHERE...All areas beyond 10 nm from shore and south of Cape Blanco. * WHEN...For the Gale Warning, until 11 PM PDT Monday. For the Hazardous Seas Warning, from 11 PM Monday to 9 PM PDT Tues
this outlet adds: small, craft, advisory, within
* WHAT...Northwest winds 20 to 30 kt with gusts to 45 kt and seas 10 to 15 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.