A weakening mesoscale convective system (MCS) advanced east southeast into Southwest Arkansas during the morning hours on June 24th, just north of an outflow reinforced frontal boundary which extended from Northeast Texas into North Central Louisiana and eastward into Mississippi. Behind the MCS, showers and thunderstorms increased in coverage from North Louisiana into Southwest Arkansas.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SHV wrote it up.
A weakening mesoscale convective system (MCS) advanced east southeast into Southwest Arkansas during the morning hours on June 24th, just north of an outflow reinforced frontal boundary which extended from Northeast Texas into North Central Louisiana and eastward into Mississippi. Behind the MCS, showers and thunderstorms increased in coverage from North Louisiana into Southwest Arkansas. Wind profiles in the 925-850 millibar layer showed some modest strengthening into the 25-30 knot range from the south southwest, helping to remove lingering lower level convective inhibition centered near 850 mb. Low level flow overrunning the surface boundary set up a convergence axis in the 925-850 millibar layer, aligned from Southeast Oklahoma into Northwest Louisiana. This zone of convergence focused increasing coverage of elevated thunderstorms throughout the morning, beneath increasingly diffluent flow aloft in the 300-400 millibar layer. The convergence axis was aligned with a gradient in MLCAPE of 500 to 1500 J/kg noted to the southwest of the axis. Precipitable water (PWAT) values ranged from 1.7 to near 2 inches across the region. As a result, hourly rainfall rates of 1 to 2+ inches occurred within areas of training storms with localized rainfall totals of 2 to 6+ inches common across Southwest Arkansas. Thus, numerous reports of flash flooding were recorded throughout the morning into the mid-afternoon.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before the first event at Jun 24, 5:56 AM CST, 19 minutes earlier. Its key messages:
Area Forecast Discussion...UPDATED
National Weather Service Shreveport LA
656 AM CDT Wed Jun 24 2026
...New AVIATION...
.KEY MESSAGES...
Issued at 1217 AM CDT Wed Jun 24 2026
- Showers and thunderstorms will continue through at least
Wednesday evening for the northern half of the region.
- Model guidance suggests drier conditions settling in on
Thursday and continuing into the weekend.
- As is common in the south, ones the faucet turns off, the real
sizzle begins.
&&
.DISCUSSION...
Issued at 1217 AM CDT Wed Jun 24 2026
Showers and thunderstorms seen across the northern half of the
region this evening are starting to clear the area to the east,
with some lingering light showers across northeast Louisiana and
south central Arkansas. Gradually this moisture will come to an
end and we will see a short couple of hours with no precipitation,
followed by another round of showers and thunderstorms towards
sunrise. This activity will linger into the early to mid
afternoon hours before starting to diminish, although we could
still see some lingering showers into Wednesday evening. Thinking
the best chances will be along and northeast of a line from Mount
Pleasant, TX to Shreveport LA, to Natchitoches, LA. Some of these
storms will be capable of producing heavy rain, with some training
possible. With the current trends pointing that precipitation
will be ongoing through the morning hours, I have extended the
Flood Watch out through 18z on Wednesday. With the amount of
moisture this area has received over the past week, it won't take
much to bring on flooding concerns.
To some this might come as a sigh of relief, while others will
dread this news, but once the last rain drop falls on Wednesday,
the sauna cranks the dial and steals the show heading into the end
of the week. Should the forecast remain true, meaning the end of
precipitation as we know it for the foreseeable future (after
Wednesday), temperatures will quickly start to climb starting on
Thursday as an upper-level ridge begins to build into the region.
Thursday will see highs range from the upper 80s across our
northern zones to the upper 90s across our southern zones. Similar
conditions are expected on Friday, but the 90s return to the
entire region on Saturday and will be the mid to upper 90s by the
start of next week. While these temperatures appear to be
manageable, considering the relatively "cool" June, add in the
humidity and we are looking at heat index values in the lower to
mid 100s by Friday. The values increase to around 105 to 110 as
early as Sunday and then linger here for Monday and Tuesday. As
such, heat headlines will likely be needed heading into the
weekend and into the start of next week. All it takes is a wave of
scorching heat to make us truly miss the rainy days we sometimes
take for granted. /33/
&&
.AVIATION...
(12Z TAFS)
Issued at 656 AM CDT Wed Jun 24 2026
Convection has again redeveloped this morning across much of SW AR
and NCntrl/NE LA, and will likely persist through much of the
morning before diminishing around midday into the early afternoon
hours. This convection will likely affect the ELD/MLU terminals,
but may also affect TXK as well, and will result in IFR/low MVFR
cigs and reduced vsbys. Away from the convection, IFR/low MVFR
cigs have developed across E TX/much of NW and Cntrl LA, with
cigs expected to gradually improve by mid and late morning,
returning to VFR by midday, eventually scattering out over E
TX/Wrn LA. While some elevated cigs from convective debris may
linger across Srn AR/NCntrl LA, this too should thin by mid and
late afternoon. There is some potential for additional isolated to
scattered convection that may develop late this afternoon into the
evening over portions of SW AR/N LA, which may linger into a
portion of the overnight hours. However, low confidence precludes
any mention in the affected terminals attm. SSW winds 5-10kts
today, except Vrb winds around 5kts across SW AR, will become
light S or Lt/Vrb after 00Z. /15/
&&
.SPOTTER INFORMATION STATEMENT...
Issued at 102 AM CDT Wed Jun 24 2026
Spotter activation may be needed this morning through a portion
of the afternoon for the potential of heavy rain and flash
flooding across the northern half of our Four State Region. /15/
&&
.PRELIMINARY POINT TEMPS/POPS...
SHV 93 75 94 76 / 30 10 0 0
MLU 90 74 94 75 / 50 20 10 0
DEQ 88 71 90 74 / 70 10 0 0
TXK 90 74 93 75 / 70 10 0 0
ELD 88 72 93 74 / 70 20 0 0
TYR 94 74 94 76 / 10 0 0 0
GGG 93 74 93 75 / 10 0 0 0
LFK 95 73 95 74 / 10 0 0 0
&&
.SHV WATCHES/WARNINGS/ADVISORIES...
AR...Flood Watch until 1 PM CDT this afternoon for ARZ050-051-059>061-
070>073.
LA...Flood Watch until 1 PM CDT this afternoon for LAZ001>006-010>014-
019-021.
OK...Flood Watch until 1 PM CDT this afternoon for OKZ077.
TX...Flood Watch until 1 PM CDT this afternoon for TXZ096-097-108>112-
126-138.
&&
DISCUSSION...33
AVIATION...15Preliminary Local Storm Report
National Weather Service Shreveport LA
248 AM CDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM Tstm Wnd Dmg 4 W Uncertain 32.70N 94.19W
06/23/2026 Marion TX Law Enforcement
Report of tree across Hwy 43.
&&
SPPreliminary Local Storm Report
National Weather Service Shreveport LA
249 AM CDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0848 PM Tstm Wnd Dmg 5 SW Uncertain 32.66N 94.18W
06/23/2026 Harrison TX Law Enforcement
Law enforcement received report of downed
trees.
&&
SPSpecial Weather Statement
National Weather Service Shreveport LA
645 AM CDT Wed Jun 24 2026
LAZ003-004-012-241215-
Webster LA-Claiborne LA-Bienville LA-
645 AM CDT Wed Jun 24 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN CLAIBORNE...NORTH
CENTRAL BIENVILLE AND EAST CENTRAL WEBSTER PARISHES UNTIL 715 AM
CDT...
At 645 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Homer, moving southeast at 25 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Arcadia, Gibsland, Athens, Mount Lebanon, Spring Lake and Holly
Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 3273 9327 3283 9314 3263 9286 3262 9286
3262 9287 3260 9287 3260 9288 3259 9288
3249 9304
TIME...MOT...LOC 1144Z 316DEG 21KT 3271 9314
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
57Special Weather Statement
National Weather Service Shreveport LA
649 AM CDT Wed Jun 24 2026
ARZ071-072-241215-
Columbia AR-Lafayette AR-
649 AM CDT Wed Jun 24 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN COLUMBIA AND
SOUTHEASTERN LAFAYETTE COUNTIES UNTIL 715 AM CDT...
At 649 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Stamps, moving southeast at 20 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Stamps, Taylor, Bussey, Smithland, Macedonia, Cornelius, Lerch,
Mars Hill and McKamie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
Torrential rainfall is also occurring with this storm and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3328 9367 3336 9348 3316 9328 3303 9351
TIME...MOT...LOC 1149Z 323DEG 19KT 3326 9353
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
57Preliminary Local Storm Report
National Weather Service Shreveport LA
711 AM CDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0650 AM Flash Flood 5 W Haynesville 32.98N 93.22W
06/24/2026 Claiborne LA Law Enforcement
Highway 521 west of Haynesville was covered
in high water.
&&
15Preliminary Local Storm Report
National Weather Service Shreveport LA
713 AM CDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0650 AM Flash Flood 1 S Haynesville 32.96N 93.14W
06/24/2026 Claiborne LA Law Enforcement
Multiple cars were stalled in high water in
and near Haynesville. Highway 79 through
town was covered in high water.
&&
15The Shreveport radar (KSHV), 108 km away, was scanning. The volume nearest the first event began at 12:14 UTC.
16 flash flood. Local standard time, as filed.
The Highway 82 underpass at the railroad track between Buckner and Waldo was flooded and closed.
High water covered County Road 37 due to flash flooding.
High water covered County Road 26 due to flash flooding.
High water covered County Road 126 due to flash flooding.
High water covered County Road 28 due to flash flooding.
High water covered the roadway in multiple locations along Highway 313.
High water covered several streets in Lewisville due to flash flooding.
High water was reported to be entering a home in Buck Range due to flash flooding.
County Road 25 north of Lewisville closed due to high water up to two feet deep covering the roadway.
High water was reported to be entering the Howard County Historical Society building in Nashville due to flash flooding.
A portion of Highway 355 was closed in Fulton due to a flooded underpass.
Barton Bethel Road closed due to flash flooding.
Jones Road closed due to flash flooding.
Buck Range Road closed due to flash flooding.
Mount Carmel Road closed due to flash flooding.
High water was reported to be entering 8-10 homes on North Main Street in Nashville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2026Every state in 2026This day in weather historyWarnings in Arkansas, June 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1353406, 1353407, 1353408, 1353409, 1353410, 1353411, 1353412, 1353415, 1353414, 1353417, 1353419, 1353420, 1353421, 1353422, 1353423, 1353424.