649
FXUS64 KLCH 171107
AFDLCH

Area Forecast Discussion
National Weather Service Lake Charles LA
607 AM CDT Tue Sep 17 2024

...New AVIATION...

.SHORT TERM...
(Today through Thursday night)
Issued at 335 AM CDT Tue Sep 17 2024

The weak, quasistationary boundary that has been sitting over the
area for the last three days is presently analyzed near the coast
this morning with dewpoints ranging from 68 to 73 away from the
coastline. Aloft, a broad upper level low resulting from the
merging of the remnants of Francine and a now inland tropical
disturbance will maintain weakness aloft across Acadiana through
the day. The combination of these two features will result in
scattered convection this afternoon primarily around the
Atchafalaya basin, but isolated convection could develop as far
West as Lake Charles. As has been the case the last couple of
days, any convection that develops should wane around sunset.

Upper level ridging over central Texas builds further into the
region by Wednesday which should keep any afternoon convection
isolated. Further entrenchment of the ridge on Thursday looks to
suppress all convection. Daily temperatures will be running near
seasonal normals both today and Wednesday with highs ticking up a
degree or two Thursday in response to less cloud and precip
coverage.

Jones

&&

.LONG TERM...
(Friday through Tuesday)
Issued at 335 AM CDT Tue Sep 17 2024

The extended period will be dominated by upper level ridging
becoming centered nearly overhead Friday through early next week.
This will prevent any appreciable precipitation while keeping
temperatures at or slightly above seasonal normals. A weak
gradient at the surface will maintain somewhat variable winds at 5
MPH or less.

Jones

&&

.AVIATION...
(12Z TAFS)
Issued at 526 AM CDT Tue Sep 17 2024

Light ground fog has developed across the region this morning
intermittently causing minor visibility restrictions at area
terminals. Expect any fog to dissipate by 14Z.

A weak pressure gradient at the surface broadly surrounding a
tropical disturbance over the Carolinas will maintain light
Northwesterly to Northerly winds through the period. The
combination of a weak frontal boundary at the surface and weakness
aloft will support scattered thunderstorm development from mid
afternoon through early evening primarily across South Central
Louisiana. LFT and ARA are most likely to be affected by these
storms. Storms will wane by around sunset with calm and clear
conditions expected tonight. Another round of light ground fog may
develop early Wednesday morning.

Jones

&&

.MARINE...
Issued at 335 AM CDT Tue Sep 17 2024

A weak pressure gradient across the gulf this week will keep
winds light and seas low. Isolated showers and thunderstorms will
be possible across the near shore waters this afternoon with no
appreciable precipitation chances expected the rest of the week.

&&

.PRELIMINARY POINT TEMPS/POPS...
AEX  86  69  88  69 /  20   0  10   0
LCH  88  74  88  74 /  20  10  10   0
LFT  89  74  90  74 /  40  10  20   0
BPT  91  75  92  74 /  10  10  10   0

&&

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

$$

SHORT TERM...66
LONG TERM....66
AVIATION...66