824
FXUS64 KSHV 291911
AFDSHV

Area Forecast Discussion
National Weather Service Shreveport LA
211 PM CDT Wed May 29 2024

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

.SHORT TERM...
(This evening through Thursday)
Issued at 108 PM CDT Wed May 29 2024

MCV currently spinning across NE TX/NW LA/SW AR with only light
precipitation underneath it but more impactful convection moving
through our far southeast zones attm. Clouds are clearing rapidly
in the wake of the disturbance across NE TX and thus, we may
exceed fcst high temperatures today across our northwest half as a
result before the sunset.

Upper ridge axis has finally shifted east of the Rockies and has
emerged across the Great Plains today and that trend will slowly
continue through the end of the work week. Not seeing much in the
way of disturbances upstream that could impact our region
overnight but disturbances across the Tx Hill Country will be
moving our way during the day Thursday and its these features
that will provide the necessary forcing, which combined with
daytime heating, to product scattered to numerous convection once
again across the region. Severe weather parameters are not really
present but an isolated strong to severe thunderstorm along with
locally heavy rainfall cannot be ruled during the day Thursday.

Concerning temperatures, did shave temps slightly from NBM values
as they have been running just a tad warm lately and the same can
be said for daytime high temperatures assuming of course we see
the kind of storm coverage we should see on Thu.

13

&&

.LONG TERM...
(Thursday Night through next Tuesday)
Issued at 108 PM CDT Wed May 29 2024

In the wake of the upper ridge across the Intermountain West will
be a weakly amplified upper trough. A piece of this trough is
fcst to break out into the Southern Plains late in the day Thu
and move out of the Upper Red River Valley and into our far
northwest zones late Thu Night. Convection associated with this
disturbance will have the potential to be a damaging wind
producer along with excessive heavy rainfall during the predawn
hours Friday Morning and all through the day Friday across much
of/if not all of the Four State Region. SPC`s Slight Convective
Risk for Severe Thunderstorms and WPC`s Slight Risk for Excessive
Heavy Rainfall are both highlighting our region for this
potentially big weather event. Strong upstream QPF signals are
highlighted by most deterministic model solutions but there is not
much in the way of model run to run consistency in the exactly
locations of this heavier precipitation. Thus, we will continue to
monitor these threats as the event nears.

Dirty near zonal to WNW flow aloft will continue through the
weekend and model spread is rather large with additional upstream
disturbances moving our way for the weekend. Having said this,
confidence is high enough for the inclusion of scattered to
numerous pop coverage Sat and Sun before maybe, and this is a big
maybe, we may see enough upper ridging across the Great Plains to
shunt northwest flow type convection to our east for next week.
Of course if this were to happen, we would introduce very warm to
hot conditions returning to at least the western half of our
region due to our close proximity to the upper ridge. We have to
get there first however and thus, more rain and thunderstorms are
the underlying theme of both the short term and long term portion
of this 7-day forecast unfortunately.

13

&&

.AVIATION...
(18Z TAFS)
Issued at 1241 PM CDT Wed May 29 2024

Cluster of showers and thunderstorms are actively working across
the southern extent of the airspace this afternoon. At the same
time, light showers will prevail across the I-20 terminals, while
dense BKN/OVC remains overhead. Clouds should scatter out a bit
here through the next several hours, before a mix of SCT/BKN takes
over during the overnight hours, with OVC prevailing after
sunrise just about airspace wide. With this will come some
lowering CIGs sub FL100. Convective models continue to paint
various solutions in terms of mid to late morning initiation of
SHRA/TSRA. Given uncertainty, have elected to include VCSH on the
back side of the package to promote some awareness of convection
in and around the terminals late tomorrow morning. Future TAF
packages and evening guidance should help to present a clearer
image as to what is expected closer to 12z-15z Thursday.

RK

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  68  84  72  81 /  30  60  30  70
MLU  67  84  68  83 /  30  60  30  70
DEQ  64  82  65  77 /  30  60  60  70
TXK  66  84  68  79 /  30  60  50  70
ELD  64  83  65  81 /  30  60  30  70
TYR  69  84  71  79 /  30  60  60  70
GGG  68  84  70  80 /  30  60  50  70
LFK  69  84  71  82 /  20  60  30  70

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...None.
LA...None.
OK...None.
TX...None.
&&

$$

SHORT TERM...13
LONG TERM....13
AVIATION...53