Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
568 FXUS66 KSGX 072030 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 130 PM PDT Tue May 7 2024 .SYNOPSIS... Blustery northwest winds in the mountains and deserts this evening will diminish overnight. On Wednesday, weak offshore flow will bring a warmer day to the valleys along with breezy northeast winds to the mountains and deserts. A coastal eddy will bring night and morning marine layer clouds to the coastal zones each day this week. Seasonally warm weather is forecast Thursday through Saturday with an upper level trough stalled over the Southwest. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... Skies were clear this afternoon and will remain clear in the valleys, mountains and deserts tonight. Low clouds will move into the coastal zones as a coastal eddy spins up tonight. The clouds will dissipate in most areas by late morning, but linger at some of the beaches through the afternoon. The eddy continues Wednesday night with low clouds returning to the coastal zones before retreating back the coast in the afternoon, again lingering near the beaches most of the day. Gusty northwest winds in the mountains and deserts this evening will diminish overnight. The northwest flow aloft shifts northeast Wednesday and Thursday as a closed low forms over the Nevada. This offshore flow pattern will bring a period of north to northeast winds to the deserts and the mountains tomorrow, some of which will funnel through the Cajon Pass and the San Gorgonio Pass into the Inland Empire. From Thursday through Saturday the models show a large closed upper low over the Southwest meandering slowly eastward from Nevada on Friday to Utah. This places SoCal on the west side of the upper low with predominately weak north to northeast flow aloft and overall seasonal weather. && .AVIATION... 071955Z...Patchy and intermittent low clouds over the coastal waters through 20z. BKN low clouds after 04Z southern coastal waters moving northward, and will push inland about 10 miles to just west of KONT and KRNM overnight into Wednesday. Bases 1500-1800 feet MSL with tops around 2000 feet MSL. Otherwise...mostly clear skies with unrestricted VIS will continue today and tonight. && .MARINE... No hazardous marine conditions are expected through Saturday. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ PUBLIC...Moede AVIATION/MARINE...Small