196 FXUS66 KSGX 130955 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 255 AM PDT Mon Apr 13 2026 .SYNOPSIS... Scattered showers will continue into this evening from the coast to the mountains. There will be southwest to west winds for the mountains and deserts with gusts to 35 to 45 mph for this afternoon and evening. It will then be dry through next weekend. High temperatures will warm to around average on Wednesday, cool a few degrees on Thursday with gusty west winds for the mountains and deserts, then warm into next weekend with high temperatures for next weekend around 5 to 10 degrees above average. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Wednesday)... A low pressure system from the northwest will move into to southern California this morning, then move east of the area late tonight. There will be gusty west winds for the mountains and deserts with gusts to 35 to 45 mph for this afternoon and evening with gusts to 40 to 50 mph along and below the desert slopes of the mountains in San Diego County. Scattered showers will continue at times into this evening with additional rainfall of less than one-tenth inch near the coast to one-tenth to one-quarter inch in the mountains, locally to one- third to one-half inch in the San Diego County mountains. The snow level will fall to 5500 to 6000 feet this morning, then fluctuate in that range through this evening with snowfall of an inch or two above 6000 to 6500 feet. Dry weather will then follow for Tuesday through next weekend. It will be cooler today with high temperatures as much as 20 to 25 degrees below average for the mountains above 6500 feet. High temperatures for today will range from the mid to upper 50s for the far inland valleys to the mid 60s for inland coastal areas and the western valleys with the lower to mid 70s for the lower deserts. There will be drying and warming for Tuesday and Wednesday with Wednesday high temperatures around average. High temperatures on Wednesday will range from the mid to upper 60s near the coast to the 70s for the Inland Empire with the mid to upper 80s for the lower deserts. && .LONG TERM (Thursday through Sunday)... A low pressure system moving into the Pacific Northwest on Wednesday and into the Great Basin on Thursday will bring stronger onshore flow to southwestern California on Thursday. High temperatures on Thursday will be a few degrees cooler with west winds gusting to 35 to 45 mph for the mountains and deserts. There will be warming for Friday and Saturday with weak offshore flow possible on Friday. High temperatures for next weekend will be around 5 to 10 degrees above average with high temperatures ranging from the lower 70s near the coast to the lower to mid 80s for the Inland Empire with the lower deserts around 90. && .AVIATION... 130930Z...Coasts/Valleys...SCT-BKN low clouds based 2500-4000 feet MSL, mostly BKN over San Diego County. SCT -SHRA today could lower cigs to 2000 feet, especially in San Diego County. -SHRA to gradually taper off NW to SE, with more SCT cloud conditions after 00Z overnight into Tuesday. Mountains/Deserts...West to southwest winds gusting 25-35 kts through passes and on to desert slopes. MOD up/downdrafts in lee of mountains. SCT SHRA/SNSH will develop after 17Z and continue through 00Z. Areas of terrain obscuration below 6000 feet MSL on west/south facing slopes. && .MARINE... Isolated westerly wind gusts will exceed 20 kts this afternoon and evening, generating choppy conditions. No hazardous conditions are expected Tuesday through Friday. && .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
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