textproduct: Shreveport

DISCUSSION

Issued at 123 PM CDT Mon Jul 20 2026

Visible and Water Vapor imagery reveal a strong, very broad area of high pressure centered over Colorado that continues to bring hot and mainly dry weather over the ArkLaTex. Yesterday, most areas under the supervision of the office had heat indices near or exceeding 105 degrees. Given the limited overnight cooling and that the currently amplifying upper level ridge moving SE towards the Four State Region over the next few days, a Heat Advisory has been issued until 8 PM Tuesday night across the entirety of the CWA. Remember to hydrate well, take breaks when needed, know the signs for heat stroke/exhaustion and have access to air conditioning. Be on the lookout for Heat Indices as high as 110 today, and even higher HI through Wednesday that may see some zones placed into an Extreme Heat Warning as confidence in these elevated indices increase.

Some isolated afternoon convection is possible in our northern and eastern zones, as current showers and thunderstorms over Central/Eastern AR drift slowly southward. Overall temperatures over the rest of the day should see most areas into the high 90s, with some areas breaching the triple digits. Overnight lows are expect to still remain seasonably warm in the mid to high 70s, even possibly remaining in the low 80s in some of the bigger cities.

As mentioned in the key messages, this oppressive heat will continue into Tuesday and Wednesday. Currently, these are forecasted to be the hottest temperatures all week, where we could end up seeing widespread triple degree highs, although some areas may remain in the upper 90s. On both days there are some very slight chances of precip in the southern and eastern zones, however most showers and thunderstorms are expected to be isolated. Lows should continue to remain elevated Tuesday and Wednesday night in the upper 70s for most areas, even breaking into 80s. However, a weak cool front may move far enough south into portions of SW AR, SE OK on Wednesday night that allow for more seasonable overnight temps there.

As we move past mid-week, what should be Tropical Storm Bertha by then will come into focus as it treks westward parallel with the S LA coast. Current forecasts prog quite a bit of shear that will likely influence this tropical system and that could keep the northern/inland part of this storm relatively dry across our southern region. Working with that weak cool front across our northern zones, there could be enough drier air consumed by the storm that could mix and help offset heating enough across the Four State Region. Whether or not this will be enough to stop issuing heat related products is uncertain at this time and will be further nailed down in future forecasts.

By the weekend, cluster analysis continues to have this upper level ridge that has dominated most of this discussion to remain mostly overhead, but have its center retrograde slowly back west. Some heat products may be issued as temperatures and heat indices become more clear.

Ozimek/Hemingway

AVIATION

(18Z TAFS) Issued at 123 PM CDT Mon Jul 20 2026

For the 20/18Z TAF period, VFR conditions to prevail across area terminals as high pressure remains established across the region. Light southwest winds around 4 knots or less today to become light and variable overnight. Otherwise, winds to become northwest on Tuesday.

/05/

SPOTTER INFORMATION STATEMENT

Issued at 123 PM CDT Mon Jul 20 2026

Spotter activation is not expected through the middle of this week.

PRELIMINARY POINT TEMPS/POPS

SHV 79 99 82 101 / 0 0 0 0 MLU 79 100 80 100 / 10 20 20 0 DEQ 75 98 77 97 / 0 0 0 0 TXK 78 100 79 100 / 0 0 0 0 ELD 77 99 78 98 / 0 10 0 0 TYR 78 100 81 102 / 0 0 0 0 GGG 78 101 81 102 / 0 0 0 0 LFK 75 100 79 102 / 0 0 0 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...Heat Advisory until 8 PM CDT Tuesday for ARZ050-051-059>061- 070>073.

LA...Heat Advisory until 8 PM CDT Tuesday for LAZ001>006-010>014- 017>022.

OK...Heat Advisory until 8 PM CDT Tuesday for OKZ077.

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