textproduct: Shreveport

KEY MESSAGES

Issued at 123 AM CDT Mon Aug 24 2026

- An increase in showers and thunderstorms after daybreak this morning across Southeast Arkansas and Eastern Louisiana will result in cooler temperatures and some spotty much needed rainfall for these areas today.

- Oppressive heat will continue elsewhere across the region today, despite an increase in elevated cloud cover and isolated showers and thunderstorms. Thus, the Heat Advisory remains in effect today for McCurtain County Oklahoma, East Texas, extreme Southwest Arkansas, Western and Central Louisiana.

- The oppressive heat will return areawide Tuesday and continue through much of this week, although daytime temperatures should slowly back away from the century mark across Southwest Arkansas and North Louisiana by late week as the potential for isolated to scattered showers and thunderstorms return.

DISCUSSION

Issued at 123 AM CDT Mon Aug 24 2026

The early morning sfc analysis indicates a weak inverted sfc trough extending from the Red River Valley of Srn OK into extreme NE TX to along the AR/LA line, although this bndry will remain inactive overnight before slowly returning back N later this morning. However, this may be short-lived as a weak perturbation aloft begins to slide SE across NE OK and the Ozarks into the Mid-South region overnight, which should enhance increasing convection development especially as a 30-40kt SWrly LLJ feeds better forcing into these areas. Thus, convection should deepen by/after daybreak over Nrn/Ern AR and slide SE into the Lower MS Valley, which should tap into stronger heating/instability farther S as the convection shifts into Ern LA/much of MS. Despite the increasing cloud cover, believe that daytime temps should climb at least into the lower/mid 90s by afternoon over these areas, yielding sufficient instability within a high moisture environment characteristic of PW's of 1.8-1.9 inches. Thus, isolated strong to severe storms with the potential for damaging downburst winds will be possible mainly over the ECntrl LA, with convection expected to be more isolated farther W across SW AR/Wrn LA. Did expand the NBM pops back W to accommodate some of the HREF solutions, with the thickening cloud cover/increasing convection resulting in cooler temperatures over more of NCntrl LA than previously forecast. As a result, have cancelled the Heat Advisory today for Claiborne, Lincoln, Union, and Ouachita Parishes, although criteria will be more marginal farther SE into ECntrl LA which may see criteria by late morning/early afternoon before the convection/outflow cools these areas. Despite some elevated cigs farther W, temps should again near/exceed the triple digits again especially over E TX/Wrn LA, with heat indices ranging from 105-110 degrees.

Any isolated remnant convection should end by early this afternoon, although overnight cooling will remain limited given the persistent elevated cigs and S winds. Even with the ridge center mainly unchanged over NM/far W TX Tuesday, and some elevated cigs lingering through the afternoon, the oppressive heat will continue and expand back areawide, with the string of triple digits expected to continue across E TX in the least, with heat indices again ranging from 105-110 degrees. The Heat Advisory will likely be extended/expanded back E again Tuesday by the day shift to highlight the major heat impacts, even as the potential remains for isolated convection mainly in the morning for Srn AR and ECntrl LA.

The progs continue to suggest that the ridge center will begin to retrograde farther W into the Desert SW for mid and late week, resulting in a better defined NW flow regime over the region. While triple digits should be widespread again Wednesday even with isolated convection possible across the Ern zones in the afternoon, convection may increase Wednesday night with the approach of another weakness aloft that will slide SSE around the ridge, and linger across E TX/N LA Thursday. The increasing cloud cover and convection should finally result in "cooler" daytime temps away from the century mark Thursday, which may carry over into Friday even as the weakness aloft shifts farther S into coastal SE TX/S LA. However, above normal temps and mostly dry conditions will continue over the region through the remainder of the extended, as the riding aloft begins to expand back E into the area and Lower MS Valley/Mid-South region.

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AVIATION

(06Z TAFS) Issued at 123 AM CDT Mon Aug 24 2026

For the 24/06Z TAF period, VFR conditions should prevail across all but the eastern third of our airspace where late morning, afternoon and evening showers and thunderstorms could possibly impact the ELD and MLU terminals. Across the remainder of our airspace, increasing ceilings near 8kft or higher will spread from north to south across our airspace with ceilings a little harder to come by across our NE TXK terminals. Convection should dissipate across our eastern half towards the very end of this TAF period. Look for mostly S to SW winds near 10kts with some higher gusts across our airspace with the exception of the TXK/ELD and MLU terminals where winds will be mostly variable, at least through mid morning.

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SPOTTER INFORMATION STATEMENT

Issued at 123 AM CDT Mon Aug 24 2026

Spotter activation may be needed today across portions of Northcentral Louisiana for the potential for isolated strong to severe thunderstorms capable of producing damaging downburst winds. /15/

PRELIMINARY POINT TEMPS/POPS

SHV 100 79 100 79 / 20 10 10 0 MLU 92 75 97 75 / 60 20 20 0 DEQ 95 72 101 72 / 20 10 10 0 TXK 97 77 99 76 / 20 10 10 0 ELD 92 74 98 74 / 40 20 20 0 TYR 105 79 102 79 / 0 10 10 0 GGG 104 78 102 78 / 10 10 10 0 LFK 102 77 100 76 / 0 10 10 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...Heat Advisory until 8 PM CDT this evening for ARZ050-059-070-071.

LA...Heat Advisory until 8 PM CDT this evening for LAZ001>003-010>013- 017>022.

OK...Heat Advisory until 8 PM CDT this evening for OKZ077.

TX...Heat Advisory until 8 PM CDT this evening for TXZ096-097-108>112- 124>126-136>138-149>153-165>167.