Overview

• Moisture linked to the remnants of Tropical Storm Mario is expected to stream into Southern California, bringing the highest storm chances from Wednesday night through Friday with some mountain activity possible Tuesday.
• NWS and local outlets put thunderstorm probabilities near 10–35% this week, including about 20–30% for the Los Angeles and Orange County metro from Wednesday to Friday.
• A short heat surge is forecast to peak Tuesday and Wednesday, with some inland areas reaching over 100 degrees before temperatures ease late week.
• Officials warn of elevated fire weather due to potential dry lightning and plume‑dominated fire behavior, while wetter cells could drop brief heavy downpours and trigger localized flash flooding.
• A long‑period south swell is likely to generate strong rip currents at south‑facing beaches, and forecast models still disagree on how far north the deepest moisture will reach.