Area Forecast Discussion
Issued by NWS San Diego, CA

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813 FXUS66 KSGX 191216 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 416 AM PST Sun Feb 19 2017 .SYNOPSIS... A few light showers will linger along and west of the mountains...decreasing this afternoon. For tonight through Tuesday...storms moving into northern and central California will spread lighter precipitation into portions of Southern California at times with light precipitation possible for areas bordering Los Angeles County. A colder low pressure system moving inland through California Wednesday night will bring strong gusty west winds in the mountains and deserts with chances for light precipitation along and west of the mountains. Dry and little warmer for Friday...then a little cooler for next weekend with chances for precipitation late Saturday into Sunday. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Tuesday)... A few light showers will continue this morning...mainly along and west of the mountains in San Diego County and in the Inland Empire...decreasing this afternoon. In the deserts...there are areas of low clouds and some patchy fog as well. There was a recent spotter report of dense fog in the Borrego Springs area. For tonight through Tuesday...precipitation from storms moving into northern and central California will extend into portions of Southern California at times. Light precipitation may extend into portions of southwest California at times...mainly for areas bordering Los Angeles County. Snow levels will be fairly high...mostly 7000 feet for above. && .LONG TERM (Wednesday through Saturday)... A colder low pressure system moving inland through California Wednesday night will bring strong gusty west winds in the mountains and deserts with chances for light precipitation along and west of the mountains. Dry and little warmer for Friday...then a little cooler for next weekend with chances for precipitation. The current forecast leans a little slower than the ECMWF and not as amplified as the GFS with a low pressure system that could bring precipitation late Saturday into Sunday. && .AVIATION... 191040Z...Isolated light showers will diminish by mid morning. Variable cigs 1500-3500 ft MSL becoming SCT-BKN 2500 ft MSL or higher by 16Z and continuing through Monday morning. Local vis 3-6 SM in showers and in the Coachella Valley through 16Z. Mountains remaining obscured in clouds and fog. && .MARINE... Northwest winds with gusts 20-25 kt will very slowly diminish today. Combined seas had peaked at 19 ft at the San Clemente Basin Bouy and have already lowered to around 13 ft. A Small Craft Advisory continues through this for the combination of the high seas and moderately strong winds. Another storm system may create more hazardous marine weather conditions on Wednesday, with northwest winds of 25-30 kt possible and seas near 10 feet. && .BEACHES... Swell and surf will be high this morning with max sets around 12 feet, then lower gradually through the day. Some low-lying coastal areas could be at risk of minor coastal flooding due to large surf. Powerful rip currents will accompany the high surf as well. A High Surf Warning remains in effect through this evening. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...High Surf Warning until 10 PM PST this evening for Orange County Coastal Areas-San Diego County Coastal Areas. PZ...Small Craft Advisory until 10 PM PST this evening for Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm-Waters from San Mateo point to the Mexican Border Extending 30 to 60 nm out including San Clemente Island. && $$ PUBLIC...17 AVIATION/MARINE/BEACHES...SS

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