


Area Forecast Discussion
Issued by NWS Los Angeles, CA
Issued by NWS Los Angeles, CA
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605 FXUS66 KLOX 121025 AFDLOX Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 325 AM PDT Sat Jul 12 2025 .SYNOPSIS...11/1135 PM. Night through morning low clouds and patchy fog will affect the coasts and lower valleys into next week. Max temperatures will cool today and will end up several degrees below normal. There will be continued cooling through the middle of next week with valley highs on Tuesday only in the 80s. && .SHORT TERM (TDY-MON)...11/1149 PM. A small high hgt (~594 dam) upper high will sit atop Srn CA for the three day short term. warming effects of the warm upper high will be more than countered by very strong onshore flow to the east (~9mb in the afternoon) and to the north (~6mb in the afternoon) The strong onshore push will bring a night through morning low cloud pattern to the area for all three days. The high hgts will keep the marine layer smooshed enough to keep it out of some of the vlys. The strong capping inversion and coupled with the strong onshore flow will make for slow clearing and likely no clearing at many west facing beaches. Low clouds will come roaring back inland during the early evening hours. After Friday`s big cool down there will not be much day to day change in temperatures. Max temps will mostly be in the 70s across the csts (mid to upper 60s beaches) with 80s and lower 90s in the vlys. These max temps are mostly 3 to 6 degrees blo normal for the csts/vlys. The Antelope Vly, free from marine influence, will continue about 5 degrees above normal. Lastly the strong north push will bring gusty winds to the interior, esp the western Antelope Vly and foothills. Wind speeds will be close to advisory levels but likely just under with a few of the typical gusty locations seeing gusts to 45 mph. .LONG TERM (TUE-FRI)...12/1201 AM. The upper high breaks down on Tuesday and hights fall to to about 591 dam. The strong onshore flow will remain and this will bring 2 to 4 degrees of cooling to almost all of the area. Max temps will end up 4 to 8 degrees below normal. The strong onshore flow will continue and may even become a mb stronger. Conditions on Wed and Thu will be very Temps will not change much from those readings on Wednesday and Thursday. The night through morning low clouds and fog will continue unabated and the beaches will continue to struggle with clearing. The strong onshore flow will bring gusty (likely advisory level) winds to some of the mountains as well as the western portions of the Antelope Valley and foothills. Additionally, the gusty winds across the mountains and interior along with fairly warm temperatures and fairly low humidities through Tuesday, will bring an uptick in fire weather danger. On Friday both the GFS and EC show a significant increase in moisture at 700 mb and above advecting in from the SSE. Skies may turn partly cloudy. Right now there is a 5 to 10 percent chance for high based thunderstorms. && .AVIATION...12/1025Z. At 07Z at KLAX, the marine layer was 1700 ft deep. The top of the inversion was near 3500 feet with a max temperature of 25 C. High confidence in VFR TAFs for KPMD, KWJF, and KPRB. Moderate confidence in remaining TAFs. Timing of CIG/VSBY restrictions may be off by 2 hours and one flight category. KLAX...Moderate confidence in TAF. No significant east wind component expected. KBUR...Moderate confidence in 00Z TAF, except low confidence after 06Z with a 40% chance VFR conds prevail after that time. && .MARINE...12/1225 AM. There is a 30-50 percent chance of Small Craft Advisory (SCA) conditions focused across the southern Inner Waters Sunday afternoon and evening. Otherwise, SCA conditions are unlikely through at least early next week. Night to morning patchy dense fog is possible through at least this weekend. && .LOX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE. && $$ PUBLIC...Rorke AVIATION...Munroe MARINE...Munroe SYNOPSIS...30 weather.gov/losangeles Experimental Graphical Hazardous Weather Outlook at: https://www.weather.gov/erh/ghwo?wfo=lox