Cloudy skies will likely clear from west to east today. Drier conditions expected over the weekend and into next week. Night and morning low clouds will be present each day, becoming shallower into early next week. A gradual warming expected through the weekend with minor variations in temperatures each day for next week.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Areas of light rain and drizzle were present this morning across the coastal basin. Over the past 12 hours, most areas have received 0.01- 0.10 inches of rain, with a few locations on the mountain foothills 0.12 to 0.20 inches. Dry conditions are expected to prevail this afternoon and through the rest of the forecast period.
Marine layer low clouds and fog are expected to be present each night and morning through the forecast period. Areas of low clouds and fog should be present in the eastern valleys tonight into Saturday. The marine layer is expected to become shallower next week, with low clouds and fog only along the coast and into the western valleys at times.
Highs Saturday are expected to be 3 to 5 degrees warmer than today along the coast, 5 to 12 degrees warmer than today in the valleys and deserts, and 12 to 20 degrees warmer than today in the mountains. A few additional degrees of warming is expected from the coast to the deserts on Sunday. For next week, Monday and Tuesday will see a few degrees of cooling along the coast and valleys, with temperatures varying a few degrees each day Wednesday through Friday. There is increasing spread in high temperature guidance for the middle to end of the week, especially for the valleys. For example, the NBM has a 9 to 10 degree spread between the coolest and warmest guidance for high temperatures in Riverside for Wednesday and Thursday.
291800z, Coast/Valleys/Coastal Mountain Slopes, SCT-BKN low clouds based 3000-5000 ft MSL will continue to try and break out through the afternoon, but may linger across the coastal basin. Patchy low clouds based near 1500-2000 ft MSL develop over along the coastline around 01-03z Sat, and move up to 10 miles inland. VIS down to 3-6SM with locally lower where clouds intersect terrain. Clouds will lift/clear generally after 16z Sat.
Higher Mountains/Deserts, VFR conditions expected through the period. Westerly wind gusts 25-35 kts through mountain passes and along desert slopes through 06z Sat. Local up/downdrafts and local LLWS in lee (east) of mountains.
Northwest wind gusts will approach 20 kts over outer coastal waters Saturday afternoon and evening. Otherwise, no hazardous marine conditions are expected through Tuesday.
Ca, None. PZ, None.
