Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
836 FXUS66 KSGX 261643 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 843 AM PST Wed Nov 26 2025 .SYNOPSIS... High pressure aloft and offshore flow will bring additional warming of a few to around 5 degrees today. Northeast to east winds along and below the coastal slopes of the mountains will gust to 30 to 40 mph today. Thanksgiving will have mid and high clouds, weaker winds, with high temperatures for the coast and valleys a few to around 5 degrees cooler. Cooling will spread inland on Friday and Saturday. A low pressure system from the north will bring additional cooling on Sunday and Sunday night along with a chance of showers. Then drier and a little warmer for Monday and Tuesday. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .Morning Update... Clear skies will continue as north and east winds gust near 30-40+ MPH across the mountains and passes of the coastal facing slopes. Weaker offshore flow will prevail later today into Thursday morning. The weather continues to look quiet for much of the Thanksgiving holiday weekend. Will continue to keep an eye on the forecast for the low chance of light showers over the region by this coming Sunday. .Previous Discussion (300 AM Wednesday)... .SHORT TERM (Today through Friday)... High pressure aloft and offshore flow will bring additional warming of a few to around 5 degrees today with high temperatures for the valleys and inland coastal areas as much as 10 to 15 degrees above average. High temperatures for today will range from the lower to mid 70s near the coast to the lower to mid 80s for the valleys and inland Orange County with the lower deserts around 80. Early this morning, east to northeast winds along and below the coastal slopes of the mountains are gusting to 35 to 45 mph around the Cajon Pass and 25 to 35 mph elsewhere. A weakening low pressure system from the west will bring mid and high clouds for late tonight into Thursday evening. The humidity will still be lower inland on Thanksgiving with cooling for the coast and valleys of a few to around 5 degrees. The cooling will continue to spread inland on Friday, but with fewer high clouds. High temperatures on Friday will range from the mid to upper 60s near the coast to the lower to mid 70s for the valleys and inland Orange County with the lower deserts in the upper 70s to around 80. && .LONG TERM (Saturday through Tuesday)... A low pressure system moving across the Pacific toward the West Coast on Friday will then move toward the south during the weekend, remaining well to the west of Baja on Sunday, centered along 130 West longitude. A second low pressure system will move southward during the weekend through the western states on a more inland track. However, it may track just far enough to the west to entrain some Pacific moisture, bringing a chance of showers to southwestern California around Sunday afternoon and night with the chance of measurable precipitation 25 to 35 percent. The chance for one-half inch or more of rainfall or liquid-equivalent in the mountains is around 10 percent. The snow level will fall from around 6500 to 7000 feet on Sunday to 6000 feet on Sunday night. Saturday and Sunday will be cooler with Sunday high temperatures mostly in the 60s for the coast and valleys with the lower deserts in the lower 70s. Then drier and a little warmer for Monday and Tuesday. && .AVIATION... 261630Z...Coasts...VFR conditions and mostly clear skies continue through the period. Valleys/Mountains/Deserts...VFR conditions and clear skies continue through the period. E to NE winds locally gusting 25-40 kt along coastal slopes of the mountains will expand to include adjacent foothills and portions of the Inland Empire by 18z. Elevated offshore wind gusts become more confined to mountain passes by 06z Thursday. Areas of LLWS/low-level turbulence along foothills/west mountain slopes. && .MARINE... No hazardous marine conditions are expected through most of Saturday. Potential for elevated winds and seas late Saturday into early next week due to an approaching storm system, but the forecast remains uncertain; continue to check in for updates. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ UPDATE...APR PUBLIC...17 AVIATION/MARINE...Munyan