textproduct: Shreveport

KEY MESSAGES

Issued at 133 PM CDT Fri Aug 28 2026

- Above normal temperatures will persist for the next several days with the only significant rain chances possibly coming next Monday and Tuesday across Central Louisiana from the remnants of Tropical Storm Dolly.

- Except for a couple of isolated locations in Deep East Texas, peak heat index values should be just low enough to preclude heat headlines through the weekend.

- A gradual warming trend is expected for the next work week with daytime high temperatures in most locations warming into the upper 90s to near 100 degrees. Widespread heat headlines may be needed once again.

DISCUSSION

Issued at 133 PM CDT Fri Aug 28 2026

The combination of a diffuse stationary front draped across the area and a weak perturbation moving south across the Southern Plains around the eastern periphery of a strong upper ridge of the Desert Southwest could help to initiate some isolated showers and thunderstorms during peak diurnal heating this afternoon. Best rain chances should remain south of Interstate 20 where moisture availability is the highest. Any convection that develops should quickly dissipate this evening.

The strong upper ridge will migrate eastward and directly over the Southern Plains by late Saturday. The increased subsidence should result in even lower rain chances and an increase in high temperature by a couple of degrees, generally in the mid 90s to near 100 degrees. However, abundant sunshine should result in a good vertical mixing. This may keep dewpoints and peak heat index values just low enough to preclude any heat headlines this weekend. Our criteria is for two or more consecutive days with heat index values above 105 degrees F for a Heat Advisory. Some locations will likely experience heat indices near or above advisory criteria, but most likely not both Saturday and Sunday. The exception might be in the Sam Rayburn and Toledo Bend areas of Deep East Texas, but that's very uncertain.

The upper ridge is expected to drift northeast on Monday towards the confluence of the Ohio and Mississippi Rivers. This may allow for the remnants of what was Tropical Storm Dolly to drift into the region Monday and into Tuesday. However, model guidance is showing considerable disagreement in the tracks. The latest GFS brings the low directly across Central and Northern Louisiana. The latest NAM is much farther south, keeping the low along the coast and not showing much of a northward turn until west of the Sabine River. Despite this uncertainty, what's left of Dolly should be very weak by this time. On Monday, the best chances for any precip will likely be southeast of a line from Toledo Bend Dam to Monroe, but even though aren't very significant. Rain chances on Tuesday and Wednesday will likely be even more limited, with the highest chances along and south of Interstate 20.

After Tuesday, the primary concern will be the growing heat and humidity. Onshore flow will result in increasing humidity. As rain chances diminish once again, daytime high temperatures will start climbing back into the mid 90s to near 100 degrees F in most locations for the latter half of the work week. Peak afternoon heat index values should be above Heat Advisory criteria in most locations Wednesday through Friday.

/Nuttall/

AVIATION

(18Z TAFS) Issued at 1245 PM CDT Fri Aug 28 2026

For the 28/18Z TAF update, VFR vis/cigs are expected to prevail through most of the period. Some chances remain for isolated MVFR vis across the eastern airspace as easterly surface winds slacken to calm. Light southerly surface winds will return by the end of the period. /16/

SPOTTER INFORMATION STATEMENT

Issued at 133 PM CDT Fri Aug 28 2026

Spotter activation should not be needed through tonight.

/09/

PRELIMINARY POINT TEMPS/POPS

SHV 96 75 98 74 / 0 0 0 0 MLU 93 71 97 71 / 20 0 0 0 DEQ 96 68 97 67 / 0 0 0 0 TXK 95 71 98 72 / 0 0 0 0 ELD 94 69 97 69 / 20 0 0 0 TYR 99 75 99 75 / 10 0 10 0 GGG 99 73 99 73 / 10 0 10 0 LFK 98 75 98 74 / 10 10 10 0

SHV WATCHES/WARNINGS/ADVISORIES

AR...None. LA...None. OK...None. TX...None.