* WHAT. Surf of 3 to 5 feet with sets to 7 feet on south and southwest facing beaches, particularly in Orange County. Strong longshore currents, and dangerous rip currents. * WHERE. San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN. Through Sunday afternoon. The highest surf will be late today through Saturday. * IMPACTS. Increased risk of rip currents and dangerous swimming conditions. * ADDITIONAL DETAILS. Surf subsides Sunday.

* WHAT. Dangerously hot conditions with temperatures of 115 to 122 expected. * WHERE. Coachella Valley and San Diego County Deserts. * WHEN. Until 9 PM PDT Wednesday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. A prolonged period of extreme temperatures will exacerbate impacts from the heat. * ADDITIONAL DETAILS. This is long-duration heat wave with high temperatures of 115 or higher expected through at least next Wednesday.

* WHAT. Dangerously hot conditions with temperatures 97 to 105 degrees. * WHERE. Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN. Until 9 PM PDT Sunday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS. Hottest conditions are expected today and Saturday, with highs in the mid to upper-90s on Sunday.

* WHAT. Dangerously hot conditions with temperatures of 97 to 100, locally up to 103 degrees. * WHERE. San Diego County Valleys. * WHEN. Until 9 PM PDT Saturday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events.