Warming conditions for inland locations through Thursday. Coastal low clouds and fog will be present each night and morning, reaching into portions of the valleys. Cooling conditions expected Friday through Sunday with a few degrees of warming Monday and next Tuesday.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
An upper level area of low pressure currently over the California Bight will slowly move south and east Wednesday and Thursday. High temperatures today are expected to be similar to Monday's, with warming conditions for Wednesday and Thursday as weak ridging develops over Southern California. The mid-week warming will bring highs to 5 to 10 degrees above average for the valleys, mountains, and deserts and 3 to 6 degrees above average along the coast. Night and morning low clouds and fog will spread from the coast into the valleys tonight into Wednesday morning becoming shallower into Thursday morning, only reaching the western valleys.
An area of low pressure will approach the Pacific Northwest Friday, digging south into California by Sunday. This weather system will bring a few degrees of cooling each day Friday through Sunday, taking temperatures for inland locations to few degrees below normal. Additionally, the marine layer will deepen again with low clouds expected to reach into the valleys.
For Monday, weak troughing looks like it remains over California keeping highs slightly below average. By next Tuesday the NBM shows a few degrees of warming which will bring highs to just above average.
021800z, Coast/Valleys, Low clouds to redevelop and move ashore after 03Z tonight and spread into western valleys and parts of the Inland Empire overnight into Wednesday. Bases will be around 1000- 1500 feet MSL, with vis 2-5SM in inland valleys. Scatter out 16-18Z.
Mountains/Deserts, Mostly clear skies and VFR conditions today and tonight.
No hazardous marine conditions are expected through Saturday.
Ca, None. PZ, None.
