textproduct: Shreveport

KEY MESSAGES

Issued at 1200 PM CDT Sun Jul 19 2026

- A Heat Advisory is now in effect for portions of south Arkansas and north Louisiana

- Heat index values approaching 105 expected through Monday and possibly exceeding 105 on Tuesday and maybe Wednesday

- Tropical Depression Two in the northeast Gulf is forecast to strengthen as it moves westward along the Mississippi and Louisiana coastlines

UPDATE

Issued at 134 PM CDT Sun Jul 19 2026

Based on collaboration with neighboring offices, went ahead and issued a Heat Advisory for portions of south Arkansas and north Louisiana for Monday.

DISCUSSION

Issued at 1153 AM CDT Sun Jul 19 2026

The forecast through Tuesday continues to remain fairly straight- forward with heat being the main concern. An upper-ridge extending from Colorado into Oklahoma and into east and northeast Texas to strengthen areawide driving temperatures to near 100 degrees by Monday and Tuesday. Southerly flow at the surface will continue to advect moisture northward with afternoon dewpoint values to linger near the lower 70s through midweek. Trends over the past few days, along with current temperature and dewpoint observations across the ArkLaTex, suggest that heat index values may be inching closer to advisory criteria of 105 degrees, especially across portions of north Louisiana. However, with conditions still being marginal, and on the cooler side of the advisory criteria, will hold off on issuing any heat headlines for this afternoon. Should this afternoons heat index observations trend significantly warmer than expected, an advisory for Monday will likely be issued later this evening. However, by Tuesday, forecast heat index values between 105 to 110 degrees would prompt an advisory across much of the region.

The forecast for Wednesday onward remains uncertain due to competing synoptic features. A developing tropical system across the northeast Gulf will drift west along the coastline bringing impacts to mainly south Louisiana and southeast Texas from Wednesday through at least Friday. Although the tropical system is forecast to remain south of the ArkLaTex, increased cloud-cover and deepening moisture could offset the temperature surge generated by the prevailing ridge on Wednesday afternoon. Additionally, increased instability across Louisiana and east Texas may result in the introduction of higher rain chances across these areas from evening Wednesday onward. At this time no significant impacts are expected across the ArkLaTex with this tropical system should it remain on its current forecast track. Will continue to advertise a hot and dry forecast for Wednesday supporting temperatures near 100 degrees.

From Thursday onward, the tropical system will have moved into south Texas. Surface high pressure building south across the ArkLaTex behind a weak surface boundary could lead to slightly cooler high temperatures in the low to mid 90s through Saturday. /05/

AVIATION

(18Z TAFS) Issued at 1239 PM CDT Sun Jul 19 2026

VFR conditions will continue through the 19/18Z TAF period. A scattered cu field has developed early this afternoon across SE OK/SW AR/much of N LA, with a weak cu field expected to develop farther W into E TX this afternoon. The cu should diminish by/shortly after 00Z, with SKC expected across much of the region tonight. Some elevated cu/low AC may develop this evening/overnight across SE OK/portions of SW AR from very isolated convection that may develop later this afternoon over extreme NE TX/SE OK, and may trickle SE into N LA by/after 12Z Monday. Very patchy stratus/may also develop across Deep E TX by/shortly after 12Z as well, but should quickly lift by mid- morning, with a weak cu field again developing across much of the area by mid/late morning into the afternoon. WSW winds 5-7kts this afternoon will become light S or Lt/Vrb after 00Z. /15/

SPOTTER INFORMATION STATEMENT

Issued at 1200 PM CDT Sun Jul 19 2026

Spotter activation is not expected through tonight.

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PRELIMINARY POINT TEMPS/POPS

SHV 77 98 78 100 / 0 0 0 0 MLU 78 99 79 100 / 0 10 0 10 DEQ 75 97 75 100 / 0 0 0 0 TXK 78 100 78 100 / 10 0 0 0 ELD 75 98 77 100 / 0 0 0 0 TYR 77 97 78 100 / 0 0 0 0 GGG 77 97 78 100 / 0 0 0 0 LFK 75 98 76 100 / 0 0 0 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...Heat Advisory from 9 AM to 8 PM CDT Monday for ARZ073.

LA...Heat Advisory from 9 AM to 8 PM CDT Monday for LAZ004>006- 012>014-019>022.

OK...None. TX...None.