626
FXUS64 KLCH 210819
AFDLCH

Area Forecast Discussion
National Weather Service Lake Charles LA
319 AM CDT Tue May 21 2024

...New SHORT TERM, LONG TERM, MARINE...

.SHORT TERM...
(Today through Thursday night)
Issued at 214 AM CDT Tue May 21 2024

High pressure is along the East Coast while low pressure is moving
into the central plains. This is producing an onshore flow that
will persist through the short term. Aloft a ridge is extending
from North Mexico across Texas and Louisiana.

The pressure gradient will tighten somewhat between the ridge to
the east and low pressure to the north. This will increase the
south flow and keep the region humid. While the area of low
pressure in the plains is expected to move across the Great Lakes
region by the end of the short term, a trough will remain in the
plains and mid-Mississippi Valley keeping winds somewhat
elevated. The ridge aloft will continue to suppress convection
keeping the area dry.

Summer-like temperatures and humidity is anticipated with
temperatures running above climo normals for the date.

05

&&

.LONG TERM...
(Friday through Tuesday)
Issued at 214 AM CDT Tue May 21 2024

Strong ridge of high pressure aloft is anchored across central
Mexico with expansion into the region. This will keep us dry through
early next week with daytime highs in the lower and middle 90s.
Onshore flow will keep TDs up with daily heat indices in the upper
90s for late week/weekend and 100-107 by early next week.

Uncertainty remains with a possible frontal passage by Tuesday of
next week. Right now isolated showers/storms are in the forecast
with continued heat/humidity.

78

&&

.AVIATION...
(06Z TAFS)
Issued at 1135 PM CDT Mon May 20 2024

SCT high clouds will continue to work into the region from the
west while SCT-BKN low clouds form over the NW Gulf and spread
inland across SE TX. MVFR cigs are likely at BPT overnight, while
patchy light fog may develop where skies remain clear, reducing
visibilities to MVFR at lowest. Any fog that develops will
dissipate by 14Z with VFR conditions to prevail thereafter.
Southerly winds will increase to between 10-15 knots by late
morning as an area of low pressure moves northeast across the
central plains. Winds will remain elevated through the afternoon
before diminishing around sunset.

Jones

&&

.MARINE...
Issued at 214 AM CDT Tue May 21 2024

Southeast flow is expected to prevail through the period. Winds
and seas are forecast to increase today due to the pressure
gradient increasing between surface high pressure to the east and
low pressure across the Plains. All near climatology for this time
of year.

08/05

&&

.PRELIMINARY POINT TEMPS/POPS...
AEX  89  71  87  71 /   0   0  10  10
LCH  87  75  86  74 /   0   0   0   0
LFT  89  74  88  74 /   0   0   0   0
BPT  87  76  88  75 /   0   0   0   0

&&

.LCH WATCHES/WARNINGS/ADVISORIES...
LA...None.
TX...None.
GM...None.
&&

$$

SHORT TERM...05
LONG TERM....78
AVIATION...66