Alert archive / Louisiana / Flash Flood Warnings in 2026

Flash Flood Warning 22, NWS Jackson, MS

May 23, 20264 parishes in Louisiana

NWS Jackson, MS issued this flash flood warning at May 23, 2026, 1:27 AM CDT for 4 parishes in Louisiana. It was in force for 5 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 23, 2026, 1:27 AM CDT (06:27 UTC)
Expired: May 23, 2026, 6:51 AM CDT
In force: 5 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 161 km from the middle of the area, began a volume at 06:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 23, 2:15 AM CDT	FLASH FLOOD	Bastrop, LA	A few roads in the Bastrop city limits were flooded over.
May 23, 3:45 AM CDT	FLASH FLOOD	Mer Rouge, LA	A few roads around Mer Rouge were flooded over.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this flash flood warning; the first came 48 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 6.5 hours before the alert went out and 151 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 910 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

894 
WGUS54 KJAN 230627
FFWJAN
LAC041-065-067-083-231230-
/O.NEW.KJAN.FF.W.0022.260523T0627Z-260523T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
127 AM CDT Sat May 23 2026

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Northern Franklin Parish in northeastern Louisiana...
  Madison Parish in northeastern Louisiana...
  Southwestern Morehouse Parish in northeastern Louisiana...
  Richland Parish in northeastern Louisiana...

* Until 730 AM CDT Saturday.

* At 127 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 5 inches of rain 
  have fallen already. The expected rainfall rate is 1 to 2 inches 
  per hour. Additional rainfall amounts of 2 to 4 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Bastrop, Tallulah, Winnsboro, Rayville, Delhi, Mangham, Mer Rouge, 
  Collinston, Baskin, Oak Ridge, Mound, Holly Ridge, Bakers, Warden, 
  Archibald, Waverly, Crowville, Start, Tendal and Alto.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3276 9160 3270 9164 3258 9159 3254 9123
      3240 9103 3229 9098 3221 9124 3220 9149
      3214 9153 3211 9187 3212 9187 3217 9198
      3228 9199 3228 9203 3252 9190 3266 9191
      3271 9197 3269 9205 3289 9208 3287 9173

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

NF

2 follow-up statements

331 
WGUS74 KJAN 231004
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
504 AM CDT Sat May 23 2026

LAC041-065-067-083-231230-
/O.CON.KJAN.FF.W.0022.000000T0000Z-260523T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin LA-Madison LA-Morehouse LA-Richland LA-
504 AM CDT Sat May 23 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM CDT THIS 
MORNING FOR NORTHERN FRANKLIN, MADISON, SOUTHWESTERN MOREHOUSE AND 
RICHLAND PARISHES...

At 504 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain are moving east of the warned area. Between 4 and 8 inches of 
rain have fallen. The expected rainfall rate is up to 1 inch per 
hour. Additional rainfall amounts up to 1 inch are possible in the 
warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Bastrop, Tallulah, Winnsboro, Rayville, Delhi, Mangham, Mer Rouge, 
  Collinston, Baskin, Oak Ridge, Mound, Holly Ridge, Bakers, Warden, 
  Archibald, Waverly, Crowville, Start, Tendal and Alto.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3276 9160 3270 9164 3258 9159 3254 9123
      3240 9103 3229 9098 3221 9124 3220 9149
      3214 9153 3211 9187 3212 9187 3217 9198
      3228 9199 3228 9203 3252 9190 3266 9191
      3271 9197 3269 9205 3289 9208 3287 9173

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1 INCH IN 1 HOUR

$$

NF

282 
WGUS74 KJAN 231151
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
651 AM CDT Sat May 23 2026

LAC041-065-067-083-231201-
/O.CAN.KJAN.FF.W.0022.000000T0000Z-260523T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin LA-Madison LA-Morehouse LA-Richland LA-
651 AM CDT Sat May 23 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN FRANKLIN, MADISON, 
SOUTHWESTERN MOREHOUSE AND RICHLAND PARISHES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

&&

LAT...LON 3276 9160 3270 9164 3258 9159 3254 9123
      3240 9103 3229 9098 3221 9124 3220 9149
      3214 9153 3211 9187 3212 9187 3217 9198
      3228 9199 3228 9203 3252 9190 3266 9191
      3271 9197 3269 9205 3289 9208 3287 9173

$$

NF

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this flash flood warning went out at May 22, 6:59 PM CDT, 6 hours 28 minutes earlier. Its key messages:

There is a Marginal Risk for severe storms in eastern portions of the forecast area in the near term.
The potential for heavy rainfall and flooding will continue through the weekend, peaking Sunday into Monday.
We will be monitoring the potential for additional heavy rainfall and flash flooding next week.

Area forecast discussion, May 22, 6:59 PM CDT, 6 hours 28 minutes before

Area Forecast Discussion
National Weather Service Jackson MS
659 PM CDT Fri May 22 2026

...New AVIATION...

.KEY MESSAGES...

- There is a Marginal Risk for severe storms in eastern portions
  of the forecast area in the near term.

- The potential for heavy rainfall and flooding will continue
  through the weekend, peaking Sunday into Monday.

- We will be monitoring the potential for additional heavy
  rainfall and flash flooding next week.

&&

.DISCUSSION...
Issued at 415 PM CDT Fri May 22 2026

In the near term, the morning MCV responsible for a weak brief
tornado in Hinds County and areas of heavy rainfall has moved off
to the east, but a lingering moist convergence axis, located
roughly along the I-59 and Hwy 45 corridors, has been the focus
for renewed convective development during peak heating. Additional
intense rainfall rates and strong updrafts are resulting in a
renewed low-end severe/flash flood threats for the next few hours
in those areas. Later tonight, we could see the nocturnal
enhancement of ~ H850 winds and moisture transport support
additional flash flood concerns. Following days of heavy rainfall,
many locations are becoming more flood prone and sensitive to
additional heavy rainfall, and so have continued the limited flash
flood threat messaging in our HWO graphics through tonight.

Looking ahead, heavy rainfall threats will continue through the
weekend and into next week as a persistent trough to ridge
longwave pattern remains anchored over central and eastern CONUS.
This will continue to bring our region a steady stream of
subtropical moisture with seasonably high moisture content, and
multiple upper level perturbations that will provide lift to help
initiate additional rounds of convective rainfall. Once we get to
about Sunday, a greater threat for flash flooding should evolve
as a more favorable set-up and coupled upper level jet
interaction team up with the very moist air to bring a more
widespread heavy rainfall threat. As of now this appears it will
be over mainly western/southern portions of the area and have
maintained an "elevated" flood threat in this area.

Otherwise, it appears the thermodynamic/shear profiles will not
be particularly favorable for severe weather concerns given the
deep moisture and influence from the southeast CONUS ridge, but as
is the case in the near term, we'll need to monitor for marginal
tornado risks given the potential for enhanced low level shear in
the very moist air. As previously mentioned, it's difficult to
find an end to this wet pattern in the guidance through most of
the remainder of the month. /EC/

&&

.AVIATION...
(00Z TAFS)
Issued at 654 PM CDT Fri May 22 2026

A very humid airmass will maintain threats for MVFR/IFR category
stratus through the weekend with ceilings most hazardous during
the early morning hours. TSRA should be at their greatest threat
during the peak heating hours, but could occur at just about any
time of the day or night. Surface wind will be on the light side.
/EC/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       67  85  68  81 /  40  70  70 100
Meridian      68  85  67  83 /  40  60  50  90
Vicksburg     67  85  68  80 /  50  60  80  90
Hattiesburg   69  86  69  82 /  50  70  60  90
Natchez       69  85  69  80 /  50  60  90 100
Greenville    66  84  68  80 /  40  60  70  80
Greenwood     66  85  67  82 /  50  60  80  90

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.
&&

EC/

In the hours before

Special weather statement, May 22, 9:23 PM CDT, 4 hours 4 minutes before

Special Weather Statement
National Weather Service Jackson MS
923 PM CDT Fri May 22 2026

LAZ016-230330-
Madison LA-
923 PM CDT Fri May 22 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL MADISON PARISH
THROUGH 1030 PM CDT...

At 923 PM CDT, Doppler radar was tracking a strong thunderstorm near
Tallulah, moving east 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 hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Tallulah around 930 PM CDT.
  Mound around 945 PM CDT.

Other locations impacted by this storm include Richmond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3246 9122 3246 9110 3245 9107 3243 9104
      3245 9099 3243 9096 3240 9099 3236 9100
      3235 9098 3226 9100 3237 9128
TIME...MOT...LOC 0223Z 278DEG 17KT 3241 9126

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

OAJ

Special weather statement, May 22, 9:37 PM CDT, 3 hours 50 minutes before

Special Weather Statement
National Weather Service Jackson MS
937 PM CDT Fri May 22 2026

LAZ016-230315-
Madison LA-
937 PM CDT Fri May 22 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN MADISON PARISH
THROUGH 1015 PM CDT...

At 937 PM CDT, Doppler radar was tracking a strong thunderstorm over
Waverly, or near Delhi, 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 hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Waverly and Tendal around 940 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3243 9147 3245 9148 3248 9146 3247 9122
      3227 9136 3235 9147 3236 9145 3238 9148
      3240 9149 3241 9148 3241 9149 3244 9149
TIME...MOT...LOC 0237Z 292DEG 17KT 3241 9143

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

OAJ

Local storm report, May 22, 10:06 PM CDT, 3 hours 21 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
1006 PM CDT Fri May 22 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0556 PM     Tstm Wnd Dmg     2 W Mount Olive         31.76N 89.69W
05/22/2026                   Covington          MS   Law Enforcement

            Tree downed on Jaynesville Rd and Johnson
            Stewart Rd.

&&

DC

Local storm report, May 22, 10:08 PM CDT, 3 hours 19 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
1008 PM CDT Fri May 22 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0556 PM     Tstm Wnd Dmg     1 WNW Mount Olive       31.77N 89.68W
05/22/2026                   Covington          MS   Law Enforcement

            Tree downed on Jaynesville Rd at Hwy 49.

&&

DC

Local storm report, May 22, 11:01 PM CDT, 2 hours 26 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
1101 PM CDT Fri May 22 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     Flash Flood      Delhi                   32.46N 91.49W
05/22/2026                   Richland           LA   Law Enforcement

            Report of street flooding in Delhi.

&&

DC

Special weather statement, May 22, 11:28 PM CDT, 1 hour 59 minutes before

Special Weather Statement
National Weather Service Jackson MS
1128 PM CDT Fri May 22 2026

MSZ048-049-054-230500-
Copiah MS-Hinds MS-Rankin MS-
1128 PM CDT Fri May 22 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN RANKIN...
SOUTHEASTERN HINDS AND NORTH CENTRAL COPIAH COUNTIES THROUGH MIDNIGHT
CDT...

At 1127 PM CDT, Doppler radar was tracking a strong thunderstorm near
Terry, or 7 miles southwest of Byram, moving southeast at 15 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 hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Jackson, Byram, Crystal Springs, and Terry around 1135 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3206 9048 3222 9039 3219 9015 3205 9022
      3205 9023 3204 9023 3203 9025 3202 9024
      3202 9023 3191 9028
TIME...MOT...LOC 0427Z 293DEG 15KT 3211 9036

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

NF

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 7:11 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll	64 min
May 22, 7:29 PM CDT	Special Weather Statement	JAN	Madison, Richland	46 min
May 22, 7:58 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison	62 min
May 22, 8:25 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison, Richland	65 min
May 22, 9:23 PM CDT	Special Weather Statement	JAN	Madison	67 min
May 22, 9:37 PM CDT	Special Weather Statement	JAN	Madison	38 min
May 22, 9:49 PM CDT	Flash Flood Warning	JAN	East Carroll, Franklin, Madison, Richland, West Carroll	3 hr
May 23, 3:46 AM CDT	Special Weather Statement	JAN	Madison	29 min
May 23, 11:22 AM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia, Franklin, Tensas	53 min
May 23, 12:16 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia, Franklin, Tensas	59 min
May 23, 12:56 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Tensas	64 min
May 23, 1:51 PM CDT	Special Weather Statement	JAN	East Carroll	54 min

Nearby

Flash Flood Warnings in Louisiana, 2026 Every flash flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.