McComb, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

718
FXUS64 KLIX 251130
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
530 AM CST Thu Dec 25 2025

...New AVIATION...

.KEY MESSAGES...
Updated at 525 AM CST Thu Dec 25 2025

 - Widespread dense fog is occurring again this morning and is
   likely again tonight. Commuters and holiday travelers are
   urged to allow extra time to their destinations. The
   environment is very conducive to super fog formation near and
   downwind of fires.

 - Above average temperatures continue with daytime highs in the
   70s and quite possibly reaching the low 80s with overnight lows
   around 60 degrees.

 - Next cold front and chance of rain will be due into the region
   early next week with a cool down expected behind the front.


&&

.SHORT TERM...
(Tonight through Friday night)
Issued at 701 PM CST Wed Dec 24 2025

Not much change has taken place as far as the environment is
concerned. The dew pt has not even changed one degree for fog
production which remains at 63-64F. The wet bulb cooling is still
impressive when compared to yesterday`s and almost exactly equal(yesterday`s
sounding showed a 10C cooling in 1540ft today`s shows a 6C
cooling in 900ft). This comes to 1C/154ft for yesterday compared
to 1C/150ft for today. Yelp, pretty much exactly the same and
still strong. This same scenario remains through at least Friday
night. But there could be some subtle changes, not in getting fog
but how it forms. It could become more advective instead of
conglomerate by Friday morning and again Friday night.

&&

.LONG TERM...
(Saturday night through Wednesday night)
Issued at 701 PM CST Wed Dec 24 2025

A cold front will move through at the beginning of the week
flushing the fog away. There will be some showers with this but
they don`t look to be heavy. There are no moderate or strong
chances of storms with this either as most if not all of these
will be offshore and also well north of the area. We will need to
get closer to this fropa to tell exactly what and where, but this
is a first glimpse into what should occur.

&&

.AVIATION...
(12Z TAFS)
Issued at 525 AM CST Thu Dec 25 2025

All terminals near field minima (VLIFR) this morning, and unlikely
to see much improvement at most terminals until 16z or so, and
could even be closer to 18z at a few locations. Do expect at least
a few hours of VFR conditions this afternoon, but conditions are
expected to deteriorate again by mid-evening, with most or all
terminals in the LIFR to VLIFR range prior to 06z Friday. Airmass
could get mixed a little better during the day on Friday, which
may benough to break the pattern a bit.

&&

.MARINE...
Issued at 701 PM CST Wed Dec 24 2025

Fog will remain through much of each day and widespread overnight
into the end of the week which will likely bring additional
marine dense fog advisories, especially right along the coast.
This fog may not lift in many areas near the coast, but as land
heating gets going, we should see some erosion over water bodies
that can move this air over the water. The next front is due into
the region early next week. This will definitely move the fog
issue away. Look for winds to be on the increase very late in the
period with this feature as well which should produce headlines.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  74  58  77  61 /   0  10   0  10
BTR  76  60  79  61 /   0   0   0  10
ASD  72  56  75  58 /   0   0   0  10
MSY  74  60  78  62 /   0   0   0   0
GPT  70  57  72  59 /   0   0  10  10
PQL  72  53  73  57 /   0   0  10  10

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...Dense Fog Advisory until 10 AM CST this morning for LAZ034>037-
     039-046>048-056>060-064>071-076>090.

GM...Dense Fog Advisory until 10 AM CST this morning for GMZ530-550-
     552-555-557.

     Dense Fog Advisory until 6 PM CST this evening for GMZ532-534-
     536-538.

MS...Dense Fog Advisory until 10 AM CST this morning for MSZ068>071-
     077-083>088.

GM...Dense Fog Advisory until 10 AM CST this morning for GMZ550-552-
     555-557.

     Dense Fog Advisory until 6 PM CST this evening for GMZ534-536-
     538.

&&

$$

SHORT TERM...TE
LONG TERM....TE
AVIATION...RW
MARINE...TE