textproduct: Shreveport

KEY MESSAGES

Issued at 1158 AM CDT Sun Jun 21 2026

- Quiet night tonight, with lows in the mid to upper 70s.

- A line of showers and thunderstorms could move into the region beginning early tomorrow morning, depending on if a proper outflow boundary develops.

- Another cool front will sink down across the Plains and middle MS River valley bringing focus for additional showers and thunderstorms early to midweek as temperatures warm up.

DISCUSSION

Issued at 1158 AM CDT Sun Jun 21 2026

Sea breeze driven showers are moving northward late this morning and will persist through the afternoon. Rain rates with these showers have been relatively lower than we've seen in recent days, but flash flood guidance is not much higher than 2 inches across the region. As such, isolated areas of flash flooding could occur if any showers can train over one area long enough. There could also be some severe potential with these storms, but flooding will be the primary risk today. Showers will dissipate this evening and leave mostly clear skies across the region early tonight. Cloud cover will begin increasing again ahead of the next frontal boundary soon after midnight, keeping slightly warmer overnight lows in the mid to upper 70s.

CAMs are hinting at an MCS developing in northeastern OK/northwestern AR overnight and moving southeast. There seems to be agreement that this MCS will move through AR toward the Ark-La-Miss by mid morning. The more conditional risk for the Ark-La-Tx involves a possible outflow boundary from the early stages of this MCS moving southward and being the focus for another line of showers and thunderstorms. This scenario could bring severe and flash flooding potential from daybreak through the early afternoon hours. All this being said, this would be dependent on the outflow boundary development actually happening, which is uncertain right now.

The frontal boundary that would initiate the initial MCS is expected to move over southeast OK and southern AR and stall for several days. This could keep rain chances in our northern zones until the front moves northward Thursday night. The extent of the rain chances will be heavily dependent on where the front sets up, but the northern third of the CWA is the current thinking. While this front is set up, temperatures on the south side will gradually climb from the low 90s to the mid to upper 90s. Areas on the north side will largely stay in the upper 80s to low 90s with persistent cloud cover. Once the front moves back up north, we will be back to our northwest flow pattern going into the weekend.

57

AVIATION

(00Z TAFS) Issued at 621 PM CDT Sun Jun 21 2026

For the 22/00Z TAFs, VFR conditions are expected for the remainder of the evening and through much of the night, before MVFR CIGs fill in as dawn approaches. Another line of showers and thunderstorms may approach from the north by 22/12Z, but conditional factors add uncertainty. Prevailing VCTS at KTXK, where impacts are most likely. CIGs will gradually improve to VFR by 22/18Z. Southwest winds will continue at 5 to 10 kts, becoming lighter overnight and picking up into the day, with gusts of up to 20 kts tomorrow afternoon.

/26/

SPOTTER INFORMATION STATEMENT

Issued at 659 AM CDT Sun Jun 21 2026

Spotter activation should not be needed today, but may be needed prior to daybreak Monday across Southeast Oklahoma and the northern sections of Southwest Arkansas for the approaching complex of strong thunderstorms. /15/

PRELIMINARY POINT TEMPS/POPS

SHV 78 93 77 93 / 10 10 20 10 MLU 77 93 77 92 / 0 20 40 30 DEQ 75 87 73 87 / 60 60 80 70 TXK 77 91 76 89 / 40 50 50 40 ELD 76 90 74 88 / 20 40 50 40 TYR 78 92 77 92 / 10 10 10 10 GGG 77 93 77 92 / 10 10 10 0 LFK 77 95 77 95 / 0 0 0 0

SHV WATCHES/WARNINGS/ADVISORIES

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