606 FXUS66 KLOX 201823 AFDLOX Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 1123 AM PDT Fri Jun 20 2025 .SYNOPSIS...20/219 AM. A cooling trend will continue through Saturday as low pressure develops along the West Coast, along with increasing night through morning low clouds and fog. Gusty northerly winds are expected across southern Santa Barbara County, through the Interstate 5 Corridor and for other interior areas for the next several nights. A warming trend for inland areas is expected to begin Sunday but below normal temperatures are expected to continue into next week. && .SHORT TERM (TDY-SUN)...20/1108 AM. ***UPDATE*** Main update for this morning`s forecast package was focused on the winds. Expanded wind advisories into interior Santa Barbara (SBA) and San Luis Obispo (SLO) counties, as well as the interior mountains of Ventura and L.A. Counties for today through Saturday night. Converted the existing High Wind Watch into a High Wind Warning for the Southwestern SBA coast and Western Santa Ynez Range for this evening and tonight. Additionally, added a High Wind Warning for the Western Antelope Valley Foothills, I-5 Corridor, interior Ventura County Mountains, interior SBA Mountains, and the eastern Santa Ynez Range for Saturday afternoon through night. Wind gusts across the advisories will be in the 35 to 55 mph range, except where there is a High Wind Warning, where gusts to 65 mph will be possible. Please see the NPWLOX for more/exact details. Otherwise, forecast is in shape and no other updates were needed. ***From Previous Discussion*** Main focus through Saturday remains the winds across southern Santa Barbara County, but gusty winds also expected in other parts of the mountains and interior areas. Winds gusted to just under 60 mph last evening and even stronger winds are expected Friday night which should be the peak of this latest stretch of Sundowners. Latest hi res model guidance shows widespread gusts of 40-55 mph across the front country and Santa Ynez Range as far east and Refugio Friday evening, but still gusty through Goleta and the city of Santa Barbara as well. Models show decreasing northerly gradients Saturday but increasing winds aloft, particularly from 850-700mb. This could impact some of the higher portions of the Transverse range. Gusty winds are also expected across the I5 corridor region and the Antelope Valley the next couple days. Outside of those areas, no significant weather issues the next several days. The cooling trend that began Thursday for areas away from the immediate coast will continue through Saturday as a trough deepens along the West Coast. Coastal areas won`t notice much difference but inland areas will be around 3 degrees cooler Friday and 4-8 degrees cooler Saturday. The marine layer will deepen with the cooling aloft and forecast soundings show it could be around 2500 feet by Saturday in the LA Basin. However, latest hi res models are indicating stratus coverage may remain mostly just over LA County, possibly a response to the strong northerly winds to the west. A warming trend is expected Sunday, again mainly just for inland areas as onshore flow and winds aloft weaken, allowing warmer air from southeast CA to shift west. Highs expected to rise 5-10 degrees most inland areas, but at most just 1-3 degrees of warming near the coast. Despite the warm up, temperatures will still be 3-6 degrees below normal. .LONG TERM (MON-THU)...20/301 AM. After the big jump in temperatures Sunday, just very minor day to day adjustments through mid week. Models are not indicating any significant winds other than the typical afternoon/evening winds for the AV. Highs expected to remain a few degrees below normal. With decreasing winds aloft and less mixing and still moderate to strong onshore flow it`s likely the marine layer coverage will increase rapidly and spread into more of the the coastal valleys as well. && .AVIATION...20/1822Z. At 1753Z at KLAX, the marine layer was 2800 feet deep with an inversion top at 4900 feet with a temperature of 21 Celsius. Moderate confidence in flight category forecast and timing. At KSBA, high chance of either LLWS 20-30 knots or north gusts surfacing 20-30 knots Friday night. Reduced vis from BLDU possible 21-06Z at KSMX KPMD KWJF. KWJF has highest risk, with a low but present chance of LIFR/IFR. There is a 30% chance of MVFR at KOXR, KCMA, KBUR, and KVNY after 09Z Sat, with a 30% chance of no cigs at KSMO, KLAX, and KLGB. KLAX...Moderate confidence in TAF. Timing of flight cat changes could be off by +/- 3 hours, with a 30% chance of remaining VFR through the period (after clearing this afternoon). Southeast winds likely 12Z-18Z Sat, with a 20% chance of any east wind component reaching 8 knots. KBUR...Moderate confidence in TAF. Timing of flight cat changes could be off by +/- 3 hours. High confidence in slightly stronger than normal onshore winds in the afternoon. There is a 30% chance of MVFR conds after 09Z Sat. && .MARINE...20/821 AM. ***HAZARDOUS SEAS THROUGH SATURDAY*** High confidence in prolonged and strong Gale Force northwest winds beyond 20 miles from shore through Saturday night, strongest this afternoon through Saturday evening. Moderate confidence in gusts of 30 to 35 knots impacting the nearshore Central Coast waters and western Santa Barbara Channel each afternoon and evening during this stretch. All waters will see building and hazardously steep short period seas. While winds will likely not reach Small Craft Advisory (SCA) everywhere, a SCA is in effect for all areas not in the Gale Warning due the combination of widespread steep seas and the potential for widespread gusts. Small craft should stay in safe harbor, especially in the afternoon and evening hours. High confidence in lowering winds and subsiding seas for the first half of next week, with abnormally large high tides each evening. SCA winds are still likely for the waters beyond 20 miles for shore, which is typical for this time of the year. && .LOX WATCHES/WARNINGS/ADVISORIES... CA...Wind Advisory remains in effect until 9 PM PDT this evening for zones 340-341-346-347. (See LAXNPWLOX). Wind Advisory remains in effect until 3 AM PDT Saturday for zones 342-343-379. (See LAXNPWLOX). Wind Advisory in effect from 3 PM this afternoon to 5 AM PDT Sunday for zone 345. (See LAXNPWLOX). Wind Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 348. (See LAXNPWLOX). Wind Advisory remains in effect until 4 PM PDT this afternoon for zones 349-351. (See LAXNPWLOX). High Wind Warning in effect from 4 PM this afternoon to 3 AM PDT Saturday for zones 349-351. (See LAXNPWLOX). Wind Advisory now in effect from 3 PM this afternoon to 9 PM PDT Saturday for zones 350-356. (See LAXNPWLOX). Wind Advisory in effect from 3 PM this afternoon to 3 PM PDT Saturday for zones 352-353-376-377. (See LAXNPWLOX). High Wind Warning in effect from 3 PM Saturday to 5 AM PDT Sunday for zones 352-353-376>378-381. (See LAXNPWLOX). Wind Advisory now in effect until 3 PM PDT Saturday for zones 378-381. (See LAXNPWLOX). Wind Advisory now in effect until 9 PM PDT Saturday for zones 382-383. (See LAXNPWLOX). PZ...Gale Warning in effect until 3 AM PDT Saturday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 6 PM PDT this evening for zone 650. (See LAXMWWLOX). Gale Warning in effect from 6 PM this evening to 3 AM PDT Saturday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Saturday for zone 655. (See LAXMWWLOX). Gale Warning in effect until 3 AM PDT Sunday for zones 670-673-676. (See LAXMWWLOX). && $$ PUBLIC...MW/Lund AVIATION...Lund/Kittell MARINE...RK/Lund SYNOPSIS...MW/Sirard/Ciliberti weather.gov/losangeles Experimental Graphical Hazardous Weather Outlook at: https://www.weather.gov/erh/ghwo?wfo=lox