Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
604 FXUS66 KSGX 280952 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 252 AM PDT Tue May 28 2024 .SYNOPSIS... Generally seasonal weather will prevail into next week. There will be a slow warming trend through Thursday with high temperatures warming around 5 degrees, then a few degrees of cooling for Friday through Sunday, then a few degrees of warming for Monday and Tuesday of next week. There will be gusty southwest to west winds for the mountains and deserts for each late afternoon through late evening with the stronger gusts to 25 to 35 mph. The marine layer will generally fluctuate between 2000 and 2500 feet deep with areas of night and morning low clouds spreading into portions of the valleys. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Thursday)... A warming trend will continue through Thursday with less warming near the coast and a little greater warming inland. With the warming, Thursday high temperatures will be around average for the coast and valleys and around 4 to 8 degrees above average for the deserts, mostly in the 80s for the Inland Empire, 90s for the Apple and Lucerne Valleys, and 100 to 106 for the lower deserts. There will be gusty southwest to west winds for the mountains and deserts for each late afternoon through late evening with the stronger gusts to 25 to 35 mph. Night and morning coastal low clouds will continue to extend inland into portions of the valleys. && .LONG TERM (Friday through Monday)... Slow cooling for Friday through the weekend with Sunday high temperatures a few degrees above average for the deserts and a few to around 5 degrees below average for the coast and valleys, in the upper 70s to mid 80s for the Inland Empire, 80s and lower 90s for the Apple and Lucerne Valleys, and upper 90s to 102 for the lower deserts. Then a few degrees warmer for Monday and Tuesday of next week. Night and morning coastal low clouds will continue to extend inland into portions of the valleys. && .AVIATION... 280930Z...Coast/Valleys...Low clouds based at around 1000-1500 feet MSL with tops to 2100 feet will continue to cover most of the coastal basin by 13Z. Vis reduced 1-5SM along inland extent of clouds and on higher coastal terrain. Scatter out 16-19Z inland toward coast, but with limited or intermittent scatter out at the immediate coast. Low clouds with similar bases/vis will spread back inland after 02Z and into portions of inland valleys early Wednesday. Mountains/Deserts...Areas of W-SW surface gusts 30-40 knots on desert mountain slopes and locally into the deserts after 22Z. Otherwise...SCT high clouds this afternoon, but generally clear skies with unrestricted vis today and tonight. && .MARINE... No hazardous marine conditions are expected through Saturday. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ PUBLIC...17 AVIATION/MARINE...MM