FXUS66 KSGX 031755 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 955 AM PST Tue Feb 3 2026 .SYNOPSIS... Patchy low clouds and fog are being pushed offshore this morning by the strengthening east winds along and below the coastal slopes of the mountains. The offshore winds will continue to strengthen before peaking on Wednesday with gusts to 45 mph and isolated gusts to 55 mph. Mid and high cloud will spread into the area from the southeast for Thursday into Friday with a slight chance of showers for the mountains late Thursday night and early Friday. There will be drying and warming for the weekend, then cooler for next Monday. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... This morning...The offshore pressure gradients are strengthening and are currently -9.0 mb SAN-TPH and -3.6 SAN-DAG. The sfc pressure gradients and weak easterly flow aloft are combining to produce easterly winds gusting 25-30 mph in the mtn passes and the foothills. This strengthening offshore flow will push the marine layer low clouds and fog offshore out of the coastal areas. The rest of today will be sunny and dry with high temperatures around 10 degrees above seasonal averages near the coast and as much as 20 degrees above seasonal averages in the inland valleys. The mtns and deserts will be about 10-15 degrees above average. The offshore flow will strengthen before peaking Wed afternoon as a Rex block develops, with an upper low about 200 miles off the coast of Central Baja, an upper high over the northern Sierra and easterly flow aloft over SoCal. At its peak Wed afternoon, the offshore flow will produce easterly winds gusting to 45 mph and locally to 55 mph in the mtn passes and coastal foothills. The warming trend will continue into Wed when high temps will be in the mid to upper 80s west of the mtns...15-20 degrees above seasonal averages. By Thursday, the offshore flow weakens as the upper high gets displaced to the northeast in response to a low pressure trough moving in from the west, and the flow aloft becomes southeasterly. A cooling trend will begin, with high temps on Thu dropping into the 70s and low 80s west of the mtns. The circulation around the low to our southwest will draw some mid and high level moisture into SoCal, resulting in a slight chance of light showers over the San Diego County mtns for a few hours late Thu night. The cooling trend will continue for Fri-Sat as the Rex block breaks down and an upper low moves over the region. Temps will still be 5-10 degrees above seasonal averages west of the mtns. This could also bring a return of onshore flow and marine layer low clouds/fog to the coastal areas. A transient ridge will bring fair and warmer weather for Sunday before a more amplified trough again brings significant cooling, increasing clouds and chances for widespread precip next Mon-Tue. && .AVIATION... 031645Z....Coast...Clouds based 400-700 feet MSL, with vis 3-6SM, are quickly clearing off the coast, and should be VFR by 18z. For the rest of the day and into tomorrow, mostly clear and VFR conditions. .Elsewhere...VFR. && .MARINE... No hazardous marine conditions are expected through Saturday. && .BEACHES... Surf of 3 to 6 feet with sets to 7 feet in San Diego County has combined with a higher than average tide this morning to generate minor tidal overflow and coastal flooding, which will lessen through noon. Check the Coastal Hazard Message for details. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...Coastal Flood Advisory until 10 AM PSTthis morning for San Diego County Coastal Areas. Wind Advisory from 4 AM Wednesday to noon PST Thursday for Orange County Inland Areas-Riverside County Mountains-San Bernardino County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Mountains- San Diego County Valleys-San Gorgonio Pass near Banning- Santa Ana Mountains and Foothills. PZ...Coastal Flood Advisory until 10 AM PST this morning for Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm. && $$ PUBLIC...PG AVIATION/MARINE/BEACHES...Zuber