Breezy onshore winds with near-average temperatures today and tomorrow. Warming up this weekend with high temperatures 5-10 degrees above normal. Cooler and windier early-mid next week with a chance for light showers.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Current satellite shows a very clear sky across SoCal this afternoon, which allowed for this morning's cool start. This relatively quiet weather will continue into the weekend as an upper level low passes to our south through north-central Baja on Thursday. With this setup, temperatures both today and Thursday should stay right around seasonable norms, 60s to low 70s for the coasts, upper 70s for the far inland valleys, and 80s to 90s for the deserts. While the upper low passing to our south keeps us dry, breezy onshore winds pick up today, and especially tomorrow. Strongest winds expected through mountain passes and into the deserts, with gusts up to 30-40 mph on Thursday afternoon/evening. Breezes closer to 15-20 mph for the coastal areas.
Heading into the weekend, a weak upper ridge is set to move in, kicking off a warming trend. The most anomalously high heights will be centered over Idaho, but the ridge axis stretches over southern California on Saturday. The result is nearly all locations seeing high temperatures 5-10 degrees above normal Saturday afternoon.
The pattern looks to change once again for early-mid next week with another large upper low set to swing through the region. Models are in fairly good agreement with the placement of this low off the central California coast Sunday into Monday. Model spread increases some thereafter with the evolution of this low, but only really with its timing. Given the pretty good agreement in track, some precipitation is expected to move through sometime Monday into Tuesday. Current ensemble guidance suggests any rain amounts will be rather light, with the only locations seeing >50% of at least 0.1" of rain being the coastal mountain slopes. What is most likely with this trough regardless of its exact track will be a cooling trend from Sunday-Tuesday with breezy to gusty onshore winds picking up again.
300015z. Patchy low clouds based 1500-2000 ft MSL will slowly develop over coastal areas 03-09z Thu. Coverage becomes more uniform by 09-12z with clouds spreading into inland Orange/San Diego Counties as well as the western Inland Empire (KONT). Low clouds will clear to the coast by 17-18Z but may linger at beaches and just offshore through the afternoon.
Everywhere else, VFR conditions through the period with FEW-SCT high clouds around 10-15 kft through the period.
No hazardous marine conditions are expected today through Monday.
Ca, None. PZ, None.
