textproduct: Shreveport

KEY MESSAGES

Issued at 105 AM CDT Tue Aug 25 2026

- Following a brief respite from the heat Monday, the return to the oppressive heat is expected today as afternoon temperatures near or exceed the century mark again. Thus, a Heat Advisory is in effect today for the western half of the Four State Region.

- Isolated to scattered showers and thunderstorms may provide some relief to some this morning, before diminishing by afternoon.

- The oppressive heat will expand across the remainder of the region Wednesday, before slightly cooler temperatures return for late week as the upper ridge retreats farther west, and isolated to scattered showers and thunderstorms increase across the region.

DISCUSSION

Issued at 105 AM CDT Tue Aug 25 2026

Watching a narrow band of elevated convection continue to develop and shift S across extreme SE OK and into SW AR attm, along a weak shortwave perturbation that is dropping S around the Ern periphery of the upper ridge centered over NM/W TX. While the CAMs have struggled to depict this convection, some of the various short term progs do suggest elevated forcing continuing overnight especially as this convection moves into a more moist and unstable air mass, indicative of MLCapes of 1000-1500+ J/kg, and PW's of 1.7-2.0+ inches. Did bump up pops overnight and expanded them farther SSE than the previous forecast, although this convection should remain sub-severe as instability continues to wane overnight. The progs suggest that the convection should linger across portions of the region this morning although the elevated nature of the convection should keep QPF amounts minimal, before eventually diminishing/shifting S around midday. The accompanying mid level cigs should also diminish from N to S later this morning/afternoon, giving way to a return of the oppressive heat as triple digit temps are again expected over much of E TX/SE OK. This may bleed into Deep E TX/SW AR/Wrn LA as well given the very warm/bone dry grounds, with subsidence beneath the ridge contributing to temps possibly overperforming again despite the cloud cover in place. Although some mixing of dewpoints is expected, the potential for significant heat impacts are expected, with heat indices likely ranging from 105-108 degrees over the Wrn half of the area. For this reason, have issued a Heat Advisory for all of E TX, McCurtain County OK, portions of adjacent SW AR, and NW LA through 01Z this evening.

The ridge remains progged to expand farther ESE back into the Lower MS Valley Wednesday, with triple digit heat expected to increase over much of the region once again. Thus, an expansion/extension of the Heat Advisory will likely be needed for much if not the remainder of the area Wednesday, although a more pronounced NW flow regime is progged to develop Wednesday afternoon as a weakness aloft begins to shift SE into the region. The progs are struggling with convection development during the afternoon with this feature, although it seems feasible that isolated to scattered convection will develop over the Nrn half of the area during the afternoon, before increasing during the evening/overnight as outflow interactions tap into still ample instability expected to be in place. This seems to be most pronounced over Srn AR and N LA, before the convection diminishes from N to S during the day Thursday. Can't rule out some isolated strong to severe storms during this time, with damaging downburst winds the primary threat. Should see slightly cooler temps return by this time, with the upper ridge center retrograding farther W into the Desert SW. Isolated convection may redevelop across the Srn zones Friday afternoon, but this appears to be the last of the rains for now as we begin to enter another prolonged period of dry conditions.

This is due to ridging aloft that will expand back E across the Lower MS Valley into portions of the Gulf Coast states this weekend, which should act to amplify the heat once again across our region. Pending the rains that may fall over the next few days, it's not out of the realm of possibility for triple digit temps to return to the area this weekend into early next week, with little to no relief in sight in the form of wetting rains through at least the start of the new work week.

15

AVIATION

(06Z TAFS) Issued at 105 AM CDT Tue Aug 25 2026

For the 25/06Z TAF period...VFR conditions currently prevailing across all terminal sites but that could change later tonight through at least midday on Tuesday as convection currently across SE OK and SW AR will move southeast into our region. Have went with VCTS and TEMPO wording at the TXK, ELD and MLU terminals only closer to at TXK and ELD and post sunrise at MLU to account for this convection as there is pretty good agreement with various high res progs of potential impacts at these terminal locations. Otherwise we will continue dealing with these high AC ceilings but there should be some breaks in these elevated ceilings by afternoon through the end of the TAF period.

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SPOTTER INFORMATION STATEMENT

Issued at 105 AM CDT Tue Aug 25 2026

Spotter activation should not be needed today or tonight. /15/

PRELIMINARY POINT TEMPS/POPS

SHV 99 77 101 78 / 20 0 20 30 MLU 95 75 98 76 / 30 10 20 50 DEQ 101 73 98 71 / 10 10 20 30 TXK 99 76 99 75 / 20 10 20 30 ELD 97 74 99 73 / 20 10 20 50 TYR 102 79 103 77 / 20 0 20 20 GGG 102 78 103 77 / 20 0 20 20 LFK 99 76 102 77 / 10 0 10 20

SHV WATCHES/WARNINGS/ADVISORIES

AR...Heat Advisory from 10 AM this morning to 8 PM CDT this evening for ARZ050-051-059-060-070-071.

LA...Heat Advisory from 10 AM this morning to 8 PM CDT this evening for LAZ001-002-010-011.

OK...Heat Advisory from 10 AM this morning to 8 PM CDT this evening for OKZ077.

TX...Heat Advisory from 10 AM this morning to 8 PM CDT this evening for TXZ096-097-108>112-124>126-136>138-149>153-165>167.