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 over the mountains this afternoon.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
This afternoon, Only scattered mid and high clouds remain from the influx of moisture from the south. The moisture aloft disrupted the marine layer clouds and any low clouds that remain are well offshore. Temperatures are generally higher than at this time yesterday, especially in the San Diego County valleys where temperatures are as much as 8-11 degrees warmer. High temperatures for today will be 5 to locally 10 degrees above average across the region.
As we lose some of the mid-level moisture, the marine layer will reorganize and we can expect to see increased low cloud coverage in the coastal areas and western valleys by early Sat morning.
The weak upper level low pressure system continues to drift slowly westward away from the coast of northern and central Baja so we will remain sandwiched between the high pressure centered off the coast of central CA and the high pressure centered over western TX. High temperatures for the coast and valleys will cool by a few degrees for the weekend while the deserts warm by a few degrees. High temperatures on Sunday will range from a few degrees above average for the coast and valleys to 4 to 8 degrees above average for the deserts. Moderate HeatRisk will continue for the deserts through the weekend into the middle of next week. Several records for warmest daily minimum temperatures are likely to be tied or broken each day through Sunday, mainly for the coast and mountains, though there could also be a few for the deserts and inland valleys.
Through the middle of next week, There will be slight warming trend through Tuesday, then cooling of a few degrees per day for the second half of next week as a low pressure system moves inland to our north. High temperatures on Tuesday will range from near to a few degrees above average in the coastal areas to 5 to 10 degrees above average for the mountains and deserts. With the cooling late next week, high temperatures on Thursday will still be a few degrees above average for the deserts, while cooling to around 5 degrees below average for the valleys.
High temperatures on Tuesday will range from the lower to mid 70s near the coast to the mid 80s to mid 90s for the Inland Empire with 109 to 113 for the lower deserts. High temperatures on Thursday will range from the lower to mid 70s near the coast to the 80s for the Inland Empire with 104 to 108 for the lower deserts. Moderate HeatRisk will continue for the deserts through Wednesday.
The marine layer will likely deepen late next week, allowing marine layer low clouds to spread farther inland during the nights and mornings.
121745z, Coast/Western Valleys, Low clouds have cleared the coast with bands of mid/high level clouds moving through AOA 20000 ft MSL. Low clouds return after 03Z along the coast with bases 800-1200 ft MSL, pushing further inland (around 15 miles) after 09Z.
Mountains/Deserts, VFR conditions are expected through the TAF period with High clouds AOA 20000 feet MSL. High clouds will lower a bit into the afternoon, especially over mountain areas this afternoon. Cumulus AOA 10000 ft MSL over the mountains may produce very isolated -SHRA. Mostly clear skies expected after 14Z Saturday.
No hazardous marine conditions are expected through Tuesday.
Elevated surf and strong rip currents continue at area beaches into next week. Surf of 3-6 feet and sets to 7 feet are expected at south- facing beaches. San Diego County Surf will be slightly lower but, hazardous swimming conditions with high rip current and longshore current risk will still exist. See the Beach Hazards Statement for more details.
Ca, Beach Hazards Statement from late tonight through Monday evening for Orange County Coastal Areas-San Diego County Coastal Areas.
PZ, Beach Hazards Statement from late tonight through Monday evening for Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm.
