Area Forecast Discussion
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
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469 FXUS64 KLIX 160913 AFDLIX Area Forecast Discussion National Weather Service New Orleans LA 413 AM CDT Mon Sep 16 2024 ...New SHORT TERM, LONG TERM, AVIATION, MARINE... .SHORT TERM... (Today through Tuesday) Issued at 408 AM CDT Mon Sep 16 2024 Generally speaking, upper level troughing is in place over the southeastern US. It`s a split between decaying remnants of Francine over MS and Potential Tropical Cyclone 8 just off the SC coast. A mix of moist and dry air is wrapping around the broad low over MS. Forecast PW`s are a bit lower than yesterday, 1.6-1.8", with highest along the MS coast. CAMs and global models mirror this with their solutions and thus the outgoing forecast depicts this. Although the CWA isn`t outlooked by SPC for any severe wx, model soundings indicate modest instability and cooler mid/upper level temps than yesterday. Therefore, again wouldn`t be surprised to see a strong storm or 2 today. Similar conditions expected tomorrow as the remnants of Francine are absorbed by PTC8. MEFFER && .LONG TERM... (Tuesday night through Sunday) Issued at 408 AM CDT Mon Sep 16 2024 The remainder of the forecast should be a gradual transition back to a drier pattern. Upper level ridge situated west of the CWA over TX and the Central Plains will expand slightly east while broad troughing over the southeastern CONUS moves farther east. This should put the local area in a region of higher subsidence and thus less to no rain chances. Temps might but slightly above normal but not but by a degree or 2 as the ridge will still be west of the CWA and not particularly strong. MEFFER && .AVIATION... (12Z TAFS) Issued at 408 AM CDT Mon Sep 16 2024 Terminals currently VFR. Main concern in the short term will be the potential for low clouds and/or fog around sunrise. MVFR to IFR conditions possible, especially at KHUM and KMCB with a small threat of briefly LIFR. We are seeing some lowered visibilities at several non-forecast points already (KPQL and KGAO), so amendments may be necessary later. Cloud bases that develop around sunrise should lift to near FL030 by late morning. Scattered convection is possible at all terminals on Monday, primarily during the afternoon hours. IFR visibilities would be the primary direct impact for terminals, if it occurs, but instantaneous areal coverage will probably only be around 30 percent. Most or all convection should dissipate near 00z Tuesday, with VFR conditions during the evening hours. && .MARINE... Issued at 408 AM CDT Mon Sep 16 2024 Light winds and relaxed seas/waves expected through the entire forecast period with surface ridge nearby. Although a brief period of hazardous marine conditions are possible from a storm, generally expect winds around 5 knots and seas/wave around a foot. MEFFER && .PRELIMINARY POINT TEMPS/POPS... MCB 85 69 84 67 / 50 20 50 0 BTR 89 72 89 72 / 30 10 40 0 ASD 87 70 86 70 / 40 20 50 10 MSY 87 73 86 73 / 30 20 50 0 GPT 85 71 85 71 / 40 30 50 10 PQL 88 71 88 71 / 60 30 50 10 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. && $$ SHORT TERM...ME LONG TERM....ME AVIATION...RW MARINE...ME