458
FXUS64 KLCH 281730
AFDLCH

Area Forecast Discussion
National Weather Service Lake Charles LA
Issued by National Weather Service Brownsville TX
1230 PM CDT Tue Jul 28 2026

...New DISCUSSION, AVIATION, MARINE...

.KEY MESSAGES...

- Dangerous heat continues with temperatures in the upper 90s to
  100s and heat indices of 105-110F.

- A Heat Advisory is in effect for all areas today until 8 PM.

- Late week into this weekend rain chances return along with
  slightly cooler temperatures.

&&

.DISCUSSION...
(This evening through next Monday)
Issued at 1208 PM CDT Tue Jul 28 2026

The previous forecast remains on track. Broad upper level high
pressure over the SW will continue to lead to rain free and hot
conditions. Temperatures in the mid to upper 90s and dewpoints in
the 70s will lead to heat indices in the 105 to 110F range through
midweek. A Heat Advisory is in effect until 8 PM tonight. Heat
indices will be slightly lower tomorrow, and though we remain just
shy of Heat Advisory criteria, will continue to monitor closely
for potential changes.

As we head into late week, an upper level trough will dig into
the eastern US eroding the high pressure that is in place. This
will allow moisture to advect back into the region with PWATs
increasing to around 2 inches late week into this weekend. Cloud
cover is expected to return along with rain chances by Thursday
afternoon and lingering into early next week. Rain chances will
remain low on Thursday with eastern portions of CWA seeing a
15-20% (lesser westward into Texas) chance of precip. Best chance
for rainfall will be on Sunday with a 40-70% chance of rainfall
for much of the area. In addition to the increasing POPs, cloud
cover will help moderate temperatures a bit with highs in the low
to mid 90s through early next week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1208 PM CDT Tue Jul 28 2026

VFR conditions will prevail through the TAF period. Winds
will remain light from the southwest.

&&

.MARINE...
Issued at 1208 PM CDT Tue Jul 28 2026

Favorable marine conditions are expected through early Friday
with low seas and moderate winds. High pressure retreating into
central Texas late Thursday into Friday will tighten the pressure
with increasing easterly winds. This may result in a period of
Small Craft Advisory conditions and very likely will signal the
return of some rain chances over coastal waters.

&&

.FIRE WEATHER...
Issued at 1152 PM CDT Mon Jul 27 2026

The nearterm will see a prevailing forecast through the middle of
the work week. High pressure aloft will keep conditions dry with
little to no rain chances. The only exception being lower Acadiana
where a few weak showers may move overhead in the afternoon.
Expect the same on Wednesday under the same pattern. Upper levels
begin shifting into Thursday which should allow for some moisture
and low end rain chances to return to the area.

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...Heat Advisory until 8 PM CDT this evening for LAZ027>033-044-045-
     055-073-074-141>143-152>154-241>243-252>254.

TX...Heat Advisory until 8 PM CDT this evening for TXZ180-201-259>262-
     515-516-615-616.

GM...None.
&&

$$

PUBLIC/FIRE/MARINE...68
AVIATION...68