textproduct: Shreveport

KEY MESSAGES

Issued at 239 PM CDT Thu Jul 23 2026

- Expanding wrap-around cloud cover around TS Bertha will maintain slightly cooler conditions over much of the region this afternoon, with isolated to widely scattered showers and a few storms possible.

- The extreme heat will begin to build by this weekend and especially for much of next week, with Heat Advisories/Excessive Heat Warnings possible.

- No immediate relief to the heat or dry conditions is expected for the foreseeable future.

DISCUSSION

Issued at 239 PM CDT Thu Jul 23 2026

TS Bertha has made its final landfall as of late morning near the Vermilion/Cameron Parish border in SW LA, with the early afternoon visible satellite imagery indicating the low level center quickly traversing WNW into the Lower Sabine Valley just N of Sabine Pass, and eventually to near/just N of BPT in SE TX. Extensive wrap- around cigs continue to spread WNW into E TX/Srn AR as of early afternoon, which along with the increased pressure gradient, have both tempered the temp rise over much of the region. Widely scattered -SHRA have developed across much of N LA along the attendant H925-850 inverted trough axis that extends NE from Bertha's center, which will persist through early evening before diminishing. Have maintained slight chance pops from Deep E TX across N LA/SCntrl AR through mid-evening before returning to a dry forecast overnight, as the flow regime transitions back to a more Srly direction late as the remnant low center shifts farther W into S TX. Thus, the extensive cigs may thin to some extent this evening, but redevelop/lower overnight given the deepening and higher theta-e air mass which has begun to spread back W into Srn AR/E TX and thus replacing the drier/"more comfortable" air that had backdoored SW last night/early this morning. Still have yet to meet Heat Advisory criteria across areas along/S of I-20 in E TX as of 19Z, with criteria likely to be isolated/marginal at best through the remainder of the afternoon, but will allow the Advisory to ride for now but may cancel this later this afternoon pending how temps are impacted by the increasing Wwd moving cigs.

Flat sfc/upper ridging will become centered over the Cntrl Gulf coast area Friday, with hotter temps returning to the area as the low cigs gradually lift and scatter out through the day. As of now, conditions looks to be too marginal for a Heat Advisory for any part of the region, and thus have held off with this forecast package. However, the various hi-res progs and ensembles suggest the potential for very isolated mainly afternoon convection over portions of E TX/N LA/Srn AR in the newly returned Srly flow regime. Have added slight chance pops for these areas given the higher PW air that will be in place, but this will be the last of the pops through the remainder of the forecast period as the heat begins to reassert itself back over the region this weekend through much if not all of next week. This will be despite a weakness in the flow that will traverse S around the Ern periphery of the building Cntrl Plains ridge that will primarily bring some increase in elevated cigs to portions of Srn AR/N LA Saturday, but keeping any convection farther NNE into Cntrl/Nrn AR and the Mid-South region. Did bump up max temps over the NBM slightly Saturday afternoon over E TX/NW LA given the thinning elevated cigs and increased subsidence, before a thinning moisture profile results in stronger insolation and the return to near triple digit temps to portions of the area Sunday afternoon. While heat indices will near or exceed criteria for much of the region Saturday, Sunday should be more of a slam dunk for heat products areawide.

Triple digit temps should expand over much of the region Monday through the remainder of the new work week, as the upper ridge expands farther SE into the Lower MS Valley. Very little relief is expected each night with min temps nearing or only falling below 80 degrees only briefly, resulting in the return to more dire and dangerous heat through the remainder of the forecast period. The various ensembles suggest that the upper ridging/heat dome in place will linger through much of next week, before possibly retreating slightly W by next weekend, allowing for weaknesses aloft to slide S and potentially focus some convection for portions of the area by this time.

15

AVIATION

(18Z TAFS) Issued at 1249 PM CDT Thu Jul 23 2026

For the ArkLaTex terminals, MVFR cigs at KMLU/KELD an hr or few, but our other sites are VFR with heating. TS Bertha's cloud decks extend from KLFK to KSHV to KLIT, movg W at 9KTs and near KBPT. We are seeing light shwrs in the VCTY from Toledo Bend to KRSN, movg WNW at 18KT. Slight chance for VCTS at KLFK, but FZL is over 18-19kft with dry air abv an inversion at 5kft, this is where cigs will lift to before dissipating this evening. MVFR cigs likely again 12Z-17Z as the moisture parks over our area. /24/

SPOTTER INFORMATION STATEMENT

Issued at 239 PM CDT Thu Jul 23 2026

Spotter activation will not be needed through tonight. /15/

PRELIMINARY POINT TEMPS/POPS

SHV 77 95 77 97 / 20 20 10 0 MLU 76 96 77 97 / 20 20 10 0 DEQ 75 92 75 95 / 0 10 10 10 TXK 77 97 78 99 / 10 20 10 0 ELD 75 94 76 95 / 20 20 10 0 TYR 78 95 77 98 / 0 10 0 0 GGG 77 95 76 98 / 10 10 10 0 LFK 77 95 75 97 / 20 10 10 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...None. LA...None. OK...None. TX...Heat Advisory until 8 PM CDT this evening for TXZ124-125-136>138- 149>153-165>167.