057 FXUS64 KLIX 072313 AFDLIXArea Forecast Discussion National Weather Service New Orleans LA 613 PM CDT Tue Oct 7 2025
...New AVIATION...
.KEY MESSAGES... Updated at 608 PM CDT Tue Oct 7 2025
- Areas of fog possible overnight in areas that received heavy rainfall yesterday.
- Isolated to scattered showers along coastal areas Wednesday. Dry/cooler conditions expected beyond midweek.
- Hazardous marine conditions return late this week.
&&
.SHORT TERM... (This evening through Wednesday night) Issued at 337 PM CDT Tue Oct 7 2025
An upper level trough is currently moving east across the Great Lakes region with the base extending south to around Tennessee. A plume of higher atmospheric moisture content stretches from the north-central Gulf to around the apex of that trough. Locally, its a fairly sharp gradient from west to east of that higher theta-e and can see that same thing via radar imagery. Sea breeze boundaries will be focus for areas of convection but lack of large scale forcing will keep activity from becoming too strong. CAMs and global models are in good agreement that by around 00Z, showers will fizzle out. Fog potential will need to be monitored again tonight.
&&
.LONG TERM... (Thursday through Monday night) Issued at 337 PM CDT Tue Oct 7 2025
After possibility of isolated coastal showers Wednesday, looking a generally dry and cooler forecast for the remainder of the forecast period. Northern trough digs a big farther south as it tracks into the western Atlantic Wednesday night. This will send a backdoor cold front through the CWA and into the northern Gulf where it will remain. Post frontal airmass brings highs down into the low/mid 80s and lows into the 60s.
&&
.AVIATION... (00Z TAFS) Issued at 608 PM CDT Tue Oct 7 2025
All terminals VFR at forecast issuance time, and should remain so through the evening hours, at least. Still potential for low clouds/visibilities toward sunrise Wednesday, but the threat may not be as great as it was this morning. Will have IFR or lower conditions for a few hours at KBTR/KHDC/KMCB/KHUM/KASD. Expect improvement to MVFR by mid-morning, and VFR by noon. Will not mention SHRA/TSRA in the forecast for tomorrow afternoon at this time, as expected areal coverage, if it occurs at all, is too low to justify a mention that far out in the forecast.
&&
.MARINE... Issued at 337 PM CDT Tue Oct 7 2025
Weakening surface pressure gradient has allowed east to southeast winds to relax a bit to between 10 and 15 knots. Seas have also decreased to 2 to 4 feet. This will be brief as a backdoor cold front sliding in Wednesday will bring the the return of stronger winds and rougher sea state. A low then develops in the southern Gulf and gradually pushes to the west. Northeasterly winds will increase to near advisory levels in the offshore waters and seas will increase to 4 to 6 feet from Wednesday night through Friday and perhaps beyond. As for tidal lakes and nearshore waters, cautionary headlines are likely, but cannot rule out the need for Small Craft Advisories by Thursday or Friday.
&&
.PRELIMINARY POINT TEMPS/POPS... MCB 69 87 65 83 / 10 10 0 0 BTR 71 90 68 87 / 10 10 0 0 ASD 69 88 67 86 / 10 10 0 0 MSY 74 90 73 88 / 10 10 0 0 GPT 71 87 68 86 / 10 10 0 0 PQL 69 88 67 86 / 10 10 0 10
&&
.LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. &&
$$
SHORT TERM...ME LONG TERM....ME AVIATION...RW MARINE...ME
NWS LIX Office Area Forecast Discussion