textproduct: Shreveport

KEY MESSAGES

Issued at 140 PM CDT Tue Jul 21 2026

- Heat advisory/warning hazards continue through this evening and will be needed for some areas again Wednesday, but a weak cool front advancing into our northern zones will dictate changes.

- Although this front isn't expected to bring rainfall, slightly milder temperatures and drier air will take the edge off the heat for a few days late this week.

- The heat "relief" will be brief as the front will stall and lift back north by the weekend while Tropical Storm Bertha is expected to move inland across SE TX with no impacts for us.

DISCUSSION

Issued at 140 PM CDT Tue Jul 21 2026

Dangerous heat will continue to impact the region this afternoon and early evening as our current heat headlines remain unchanged for now. To avoid confusion going forward into Wednesday, updates to heat advisory/warning products will be made with the expiration of the current headlines later on this evening. At the moment, it appears areas along and south of I-20 will warrant an Extreme Heat Warning for Wednesday as compressional warming occurs in advance of a weak cool front advancing into our northern zones Wednesday morning. It's possible a Heat Advisory may be needed as a buffer between areas in the warning and those in our far northern zones where heat headlines don't appear necessary on Wednesday given the earlier arrival of the front. It will take some time for this air mass to filter farther south, thus the need for a continuation of heat headlines in our southern zones where heat indices are likely to peak in excess of 110 degrees on Wednesday. Once again, future updates will outline this threat in more specificity this evening.

Once we move beyond Wednesday, the slight reprieve from our recent heat and humidity will only last a few days. At most, we may shave a few degrees off of afternoon highs for Thursday and Friday along with slightly lower dew points but this will all be short-lived. By early this weekend, the front will quickly lift back north as the upper ridge continues to largely dominate across all of the SW and S Cntrl CONUS. Therefore, expect temperatures to trend hotter as upper 90s become widespread once again with a few triple-digit highs mixed each day from this weekend into early next week. With the track of Tropical Storm Bertha expected to remain well to our south, rain chances will remain largely negligible. So beyond the stray afternoon convection across our eastern zones today and any isolated pop-up activity through this weekend, look for rain-free conditions to prevail as we enter what is climatologically our hottest period of the year from late July into early August.

/19/

AVIATION

(18Z TAFS) Issued at 1235 PM CDT Tue Jul 21 2026

For the 21/18z TAFs, a few scattered showers and thunderstorms will be possible from South Central Arkansas southward into Central Louisiana, including KELD and KMLU, along an inverted surface trough associated with Tropical Storm Bertha. This convection will primarily be diurnally-driven and should dissipate near or just after 22/00z. Otherwise, VFR flight conditions should prevail at all terminals. Winds will become northerly or northeasterly by 22/12z. For locations north of Interstate 20, wind speeds are expected to increase to near or just over 10 kts late in the period.

Nuttall

SPOTTER INFORMATION STATEMENT

Issued at 140 PM CDT Tue Jul 21 2026

Spotter activation is not expected through tonight.

/19/

PRELIMINARY POINT TEMPS/POPS

SHV 82 100 76 95 / 10 0 0 0 MLU 80 98 76 94 / 20 0 0 10 DEQ 78 97 72 92 / 0 0 0 0 TXK 80 98 74 95 / 0 0 0 0 ELD 78 97 72 93 / 20 0 0 0 TYR 81 102 77 97 / 0 0 0 0 GGG 81 101 76 96 / 0 0 0 0 LFK 80 102 78 96 / 10 0 0 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...Extreme Heat Warning until midnight CDT tonight for ARZ050-051- 059>061-070>073.

LA...Extreme Heat Warning until midnight CDT tonight for LAZ004>006- 013-014-019>022.

Heat Advisory until midnight CDT tonight for LAZ001>003-010>012- 017-018.

OK...Extreme Heat Warning until midnight CDT tonight for OKZ077.

TX...Extreme Heat Warning until midnight CDT tonight for TXZ096-097.

Heat Advisory until midnight CDT tonight for TXZ108>112-124>126- 136>138-149>153-165>167.