textproduct: Shreveport

KEY MESSAGES

Issued at 419 PM CDT Sat Sep 5 2026

- Heat Advisory issuance will continue further south on Sunday as chances of storms are less likely along and north of I-20.

- Above normal summer heat will continue through the rest of weekend into early next week (upper 90s/lower 100s likely).

- Daily chances of afternoon showers and thunderstorms will persist now through most of next week.

DISCUSSION

Issued at 419 PM CDT Sat Sep 5 2026

Ridging has redeveloped as anticipated across the central Great Plains to our north, and convection has developed in the flow underneath its southern periphery (also as anticipated). High- resolution guidance suggests a gradual tapering off of remaining convective strength with the loss of daytime heating after sunset. Zonal flow underneath this ridge will continue to steer disturbances westward, and combined with lower geopotential heights/weaker atmospheric subsidence, convective rounds will develop inheriting this westward propagation through the next several days. Variations in the intensity of the waves of vorticity advected will drive the intensity of convection for each day. With dew points remaining in the low 70s through the weekend, the potential for heat hazard product issuance also remains elevated (especially along and north of the I-30 corridor into south Arkansas).

A new Heat Advisory has been issued further south as a result with reduced vorticity advection behind today's shortwave. This slightly drier pattern will continue through early next week with reduced or displaced vorticity advection. Medium-range guidance suggests a gradual cooldown by the middle of the week as another round of vorticity arrives from a westwardly propagating wave to induce better chances of rain by the end of the week. Long-range guidance suggests more of the same as somewhat westerly zonal flow aloft funnels more perturbations (instigating convection) in our direction. That said, the convection that does develop will still follow a diurnal pattern with the best chances of rain south of the I-20 corridor under less inhibition from ridging to the north. Resulting WPC QPF Day 1-7 values reflect this overall distribution with 0.01 to 0.25 inch rainfall totals likely north of I-20 and 0.25-0.50 inch totals likely to the south. /16/

AVIATION

(18Z TAFS) Issued at 255 PM CDT Sat Sep 5 2026

For the 05/18z TAF period...VFR conditions at all sites currently. However, isolated to scattered convection is developing across the region and could lower flight conditions. As of now, the main locations look to be at our East Texas sites, but convection at our remaining sites can't be ruled out today. This convection should diminish after sunset. Some additional reduce flight categories will be possible for a few hours near daybreak Sunday, as low cigs are forecasted to develop along and south of I-20.

SPOTTER INFORMATION STATEMENT

Issued at 1235 AM CDT Sat Sep 5 2026

Widespread spotter activation is not expected, although reports of any heavy rainfall today for areas south of I-20 would be appreciated.

PRELIMINARY POINT TEMPS/POPS

SHV 75 97 77 99 / 20 10 10 10 MLU 75 99 76 100 / 10 10 10 0 DEQ 72 101 72 101 / 10 10 0 0 TXK 75 99 76 99 / 10 10 10 0 ELD 73 101 74 100 / 10 10 10 0 TYR 74 97 76 99 / 20 10 0 10 GGG 73 98 75 101 / 30 10 0 10 LFK 72 91 74 95 / 30 10 0 20

SHV WATCHES/WARNINGS/ADVISORIES

AR...Heat Advisory until 7 PM CDT this evening for ARZ050-051-059>061- 070>073.

Heat Advisory from 10 AM to 7 PM CDT Sunday for ARZ050-051- 059>061-070>073.

LA...Heat Advisory from 10 AM to 7 PM CDT Sunday for LAZ001>006- 012>014-019-021-022.

OK...Heat Advisory until 7 PM CDT this evening for OKZ077.

Heat Advisory from 10 AM to 7 PM CDT Sunday for OKZ077.

TX...Heat Advisory until 7 PM CDT this evening for TXZ096-097-108>112.

Heat Advisory from 10 AM to 7 PM CDT Sunday for TXZ096-097- 108>112-124>126-136>138.