High temperatures for the next week will generally range from a few degrees above average near the coast to 5 to 10 degrees above average for the mountains and deserts with some slight day to day differences. Moderate HeatRisk will continue for the deserts through next Wednesday. Marine layer low clouds will spread into portions of the western valleys during the nights and early mornings, with day-to-day variations. There is a slight chance of showers near the mountains on Friday afternoon.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
This afternoon, The marine layer remains about 1500 feet deep with a strong inversion so low clouds are persisting at the immediate coast. Low clouds will likely begin to spread inland in the late afternoon. Temperatures are mostly within a few degrees of what they were 24 hours ago. A closed upper low to the southwest is enabling some high clouds to move into SoCal from the south in the southerly flow aloft.
High temperatures today will range from the lower to mid 70s near the coast to the mid 80s to mid 90s in the Inland Empire with 106 to 110 for the lower deserts. High temperatures inland will rise slightly for tomorrow and Saturday. In the coastal areas, temperatures will be within a few degrees each day. Through Saturday, high temperatures will generally range from a few degrees above average near the coast to 5 to 10 degrees above average for the mountains and deserts. Moderate HeatRisk will continue for the deserts into next week with the greatest coverage of moderate HeatRisk for the Inland Empire on Friday.
The weak upper low centered about 200 miles off the coast of central Baja will continue to push moisture from northern Baja into SoCal over the next 24-48 hours as it drifts slowly westward. Enough mid-level moisture could spread into the region on Friday for there to be small chances for showers over the mountains in the afternoon. The increasing moisture aloft will likely inhibit the radiation cooling overnight so that low temperatures will remain above seasonal averages, and some locations could experience record high minimum temperatures.
High temperatures for the mountains and deserts will remain around 4 to 8 degrees above average through next Wednesday. For the coast and valleys, high temperatures will cool a few degrees from Sunday through Wednesday, cooling from within a few degrees of average on Sunday to a few degrees below average on Wednesday. High temperatures on Sunday will range from the lower to mid 70s near the coast to the mid 80s to mid 90s for the Inland Empire with 108 to 112 for the lower deserts. Moderate HeatRisk will continue for the deserts through next Wednesday. Night and morning coastal low clouds will spread inland into the western valleys at times.
111800z, Coast/Valleys, Low clouds have cleared most coastal areas with a small area clinging to the northern part of the Orange County coast. SCT/BKN high clouds are moving in from the south with bases AOA 20000 ft MSL that will continue to spread north over the area through the period. Low clouds will begin to drift in along the coast after 03Z Friday, filling and pushing in approximately 15 miles around 05Z. Minor vis reductions 4-6 SM will be possible for elevated coastal terrain overnight. Low clouds will begin their retreat to the coast after 15Z-16Z Friday, clearing by 17Z-18Z.
Mountains/Deserts, VFR conditions expected through the TAF period with high clouds AOA 20000 ft MSL.
No hazardous marine conditions are expected through Sunday.
Elevated surf and strong rip currents expected through this afternoon. Surf gradually diminishes today, with peak surf 4-6 feet and sets to 7-8 feet at south-facing beaches. See the Beach Hazards Statement for more details.
Ca, Beach Hazards Statement until 8 PM PDT this evening for Orange County Coastal Areas-San Diego County Coastal Areas.
PZ, None.
