FXUS66 KLOX 191711 AFDLOX Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 1011 AM PDT Tue May 19 2026 AVIATION SECTION UPDATED .SYNOPSIS...19/858 AM. There will some warming today and Wednesday with lighter Santa Ana winds. Beginning Thursday there will be a return to cooling May Grey conditions which will last through the weekend. && .SHORT TERM (TDY-THU)...19/913 AM. ***UPDATE*** Light offshore flow continues this morning with still some breezy northeast winds, mainly in the LA mountains and the Santa Susanas. Gusts into the 30s are possible in those areas, but outside of that winds are expected to be 25mph or less. Winds shift around to west-southwest by afternoon in most areas except the higher mountains where light northeast flow will continue into Wednesday. The warming trend will continue today with most areas warming up by a few degrees over yesterday. Warmer valleys may touch 90 today while intermediate areas away from the coast will be in the upper 70s to lower 80s. ***From Previous Discussion*** A return to onshore flow and a weak eddy will bring some low clouds to the coasts on Wednesday morning. Skies, otherwise, will be sunny. The gradients will be on the light side and there will be no wind issues. The coastal temps will not change much, but the rest of the area will see a couple more degrees of warming. A few 90 degrees readings are possible in the warmest vly locations. Continued onshore trends will bring moderate onshore flow to the area on Thursday. The marine layer clouds will respond in kind and most of the coasts and some of the lower vlys will wake up to low clouds. The onshore flow will also delay clearing to the late morning. There will be a little stronger seabreeze as well as a return to gusty afternoon winds in the Antelope Vly. A multi day cooling trend will kick off with max temps falling 1 to 3 degrees across the csts/vlys (max temps may rise another degree or two across the far interior) .LONG TERM (FRI-MON)...19/1226 AM. May Grey will return during the xtnd period. At the upper levels there will be fairly weak flow. At the sfc there will be steadily increasing onshore flow. By the weekend there will be moderate to strong onshore flow. A more robust marine layer will likely develop each night through morning. The clouds will push a little deeper into the vly each day as well. By the weekend some beaches will struggle to clear. The increased onshore flow to the east will produce moderate southwest winds across the Antelope Valley and foothills during the weekend. Fridays will see the biggest drop in temps with most areas falling by 4 to 6 degrees. A few more degrees of cooling are slated for Saturday and then little change is forecast for Sunday and Monday's temps. Highs over the weekend will range from the upper 60s to mid 70s across the csts with upper 70s to mid 80s for the vlys. As is typical with strong onshore flow, the csts/vly temps will be below normal while the interior temps will be a few degrees over normal. && .AVIATION...19/1710Z. At 1616Z at KLAX, the marine layer was 800 ft deep, with an inversion up to 1400 ft and a maximum temperature of 20 C. High confidence in CAVU TAFs. There is a 15% chance of 6SM FU at KVNY due to Sandy Fire from 02Z-06Z Wednesday. KLAX...High confidence in TAF. VFR conditions are expected. However, 20% chance for MVFR VSBYs HZ 11Z-16Z Wednesday. There is a 15% chance of east wind component reaching 7-8 kts from 12Z-16Z Wednesday. KBUR...Moderate confidence in TAF. No wind issues expected. && .MARINE...19/201 AM. For the Outer Waters, high confidence in current forecast. Today through Friday, winds and seas are expected to remain below SCA levels, except for localized pockets of near SCA NW winds during the afternoons and evenings. For the Inner Waters north of Point Sal, high confidence in current forecast. There is a 40 percent chance of SCA winds on Wednesay afternoon/evening. Otherwise through Friday, winds and seas are expected to remain below SCA levels. For the Inner Waters south of Point Conception, high confidence in current forecast. Local SCA winds may occur again later today and Wednesay evening off the coast of Point Dume, across the San Pedro Channel, and in the Santa Barbara Channel. Otherwise through Friday, winds and seas are expected to remain below SCA levels. && .LOX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE. && $$ PUBLIC...MW/Rorke AVIATION...Black MARINE...Black/Schoenfeld SYNOPSIS...30 weather.gov/losangeles Experimental Graphical Hazardous Weather Outlook at: https://www.weather.gov/erh/ghwo?wfo=lox