textproduct: Shreveport

KEY MESSAGES

Issued at 141 PM CDT Tue Sep 8 2026

- Hazardous heat will persist for much of the area for the next week.

- Isolated to scattered diurnally-driven showers and thunderstorms are expected each afternoon.

- More widespread coverage of showers and thunderstorms Thursday and Friday, especially in the far north and the far south, which may help bring a few degrees of relief.

DISCUSSION

Issued at 141 PM CDT Tue Sep 8 2026

A rather broad upper-level ridge extending from the Desert Southwest to the Carolinas remains firmly centered over the Southern Plains. Weak mid-level disturbances rotating around the southern periphery of the ridge should once again help initiate isolated to scattered diurnally-driven convection this afternoon. A weak stationary front draped from north to south across the area may help to provide some focus for convective development. Given the high amount of instability, any strong, more organized storms could produce an isolated damaging wind threat before the storms gradually diminish this evening.

On Wednesday, the boundary should lift northeast out of the forecast area as a warm front. Some drier air should also move into the region, but combined with subsidence from the ridge, this will likely keep rain chances below mentionable levels. On the flip side, the lower dewpoints should result in lower heat index values for most locations. It won't be enough to keep us under Heat Advisory criteria in most places, but at least it's some relief.

After Wednesday, the upper-level ridge is expected to weaken. This will allow an upper trough axis to push a cold front southeast into the Central and Southern Plains by Thursday. Unfortunately, any appreciably cooler air will remain far to our northwest. However, the front should bring increased chances for showers and thunderstorms for portions of Southeast Oklahoma, Southwest Arkansas, and extreme Northeast Texas on Thursday. PoPs for Friday and beyond will be more uncertain. A shortwave trough is expected to move across Oklahoma and Arkansas. There may be a surface trough along the Gulf coast, which could help to focus convective development better in Deep East Texas and into Central Louisiana. At first glance, the GFS and ECMWF appear to be very aggressive with precip Friday and into Saturday, but Day 1-7 QPF amounts from the NBM remain quite low. Therefore, there is medium to high confidence showers and thunderstorms will develop, but they will likely remain relatively spotty in coverage, and significant wetting rains are not expected.

The increased cloud cover and rain chances should provide at least some additional relief from the heat. Daytime high temperatures from Wednesday through next Monday should remain below triple digits, but still well into the mid to possibly upper 90s. Combined with the humidity, peak heat index values will likely still be near or above Heat Advisory criteria.

/Nuttall/

AVIATION

(00Z TAFS) Issued at 743 PM CDT Tue Sep 8 2026

Convection is dissipating quickly this evening and all we are left with is high AC and Cirrus debris cloud cover which should continue thinning as we go through the overnight hours. Otherwise, look for a cu field to develop by mid to late morning on Wednesday with this cu continuing to grow through the end of the TAF period. Not seeing much in the way of storm coverage for Wednesday so will forgo any mention of VCTS during the afternoon hours on Wednesday. Thus VFR conditions should prevail through the next 24 hours.

13

SPOTTER INFORMATION STATEMENT

Issued at 141 PM CDT Tue Sep 8 2026

Spotter activation is not expected at this time.

/09/

PRELIMINARY POINT TEMPS/POPS

SHV 76 97 76 96 / 0 0 0 10 MLU 75 97 75 97 / 0 0 0 10 DEQ 72 99 71 97 / 0 10 0 20 TXK 75 98 75 97 / 0 10 0 10 ELD 73 98 73 98 / 0 10 0 10 TYR 75 98 75 97 / 0 0 0 10 GGG 74 99 74 98 / 0 10 0 10 LFK 74 93 73 91 / 10 10 0 20

SHV WATCHES/WARNINGS/ADVISORIES

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

LA...Heat Advisory from 10 AM to 7 PM CDT Wednesday for LAZ001>006- 010>014-017>022.

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

TX...Heat Advisory from 10 AM to 7 PM CDT Wednesday for TXZ096-097- 108>112-124>126-136>138-149>153-165>167.