Flash Flood Warning 52, NWS Jackson, MS

260 
WGUS74 KJAN 212319
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
619 PM CDT Fri Aug 21 2026

MSC127-212329-
/O.CAN.KJAN.FF.W.0052.000000T0000Z-260822T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Simpson MS-
619 PM CDT Fri Aug 21 2026

...FLASH FLOOD WARNING IS CANCELLED FOR EASTERN SIMPSON COUNTY...

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

&&

LAT...LON 3197 8997 3200 8981 3186 8967 3178 8967
      3177 8987

$$

OAJ

Area Forecast Discussion
National Weather Service Jackson MS
328 PM CDT Fri Aug 21 2026

...New DISCUSSION...

.KEY MESSAGES...

- Dangerous heat stress conditions are expected across at least
  portions of the forecast area again today.

- Isolated to scattered severe storms capable of damaging wind
  gusts are possible again this afternoon into this evening.

&&

.DISCUSSION...
Issued at 315 PM CDT Fri Aug 21 2026

Through Saturday: A frontal boundary will sag slowly southward
toward the coast and help to focus scattered diurnally driven
storms for the remainder of the afternoon and into the early
evening over the southern half of the area. Given how hot and
unstable the boundary layer conditions are, steep low level lapse
rates are supporting microburst winds (e.g., 58 mph gust at TVR
just now), and have continued to message for a slight severe
weather risk this afternoon/evening. This threat may shift into
northwest portions of the area Saturday afternoon as stronger mid
level flow potentially brings organized convection, so stay tuned
for additional severe weather messaging. Of course the dangerous
heat threat continues as well and have issued an additional heat
advisory for Saturday. The heat will gradually become more
focused over southwest portions of the area, and have adjusted our
messaging to reflect this.

Sunday through next week: Global model guidance indicate that a
northwest flow pattern will evolve and persist through the
remainder of the forecast. A NW-SE oriented thermal gradient will
support the greatest heat stress over southwest portions of the
forecast area, but this doesn't appear it will be more than a
limited to elevated dangerous heat situation. This pattern would
continue to support an occasional MCS threat, but timing details
are very uncertain, and overall rain chances are not great in the
mean. Unfortunately for those needing rainfall, there are no
strong signals for significant rainfall at this point aside from a
gradual uptick in rain chances as we go later into next week. All
global model ensembles point to dry anomalies. Given the
continued vegetative stress, the forecast area will become more
vulnerable to fire danger should wind/RH thresholds be met. As of
now the weather pattern isn't supporting this, but all fire
related interests should monitor closely. /EC/

&&

.AVIATION...
(18Z TAFS)
Issued at 1240 PM CDT Fri Aug 21 2026

VFR flight conditions will prevail through the period. Site along
and south of I-20 will have a chance for scattered TSRA this
afternoon/evening with gusty winds and reduced flight conditions. /SW/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       73 100  74  99 /   0   0  10  10
Meridian      73  99  73  98 /  10   0  10  10
Vicksburg     73 100  73  98 /   0  10  10  10
Hattiesburg   74  99  74  99 /  40   0   0  10
Natchez       74 101  75  99 /  10   0   0  10
Greenville    73  99  73  98 /   0  10  20  10
Greenwood     72  98  72  97 /   0  10  10  10

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory until 8 PM CDT this evening for MSZ018-019-025>039-
     044>046-050>052-056>058-065-066-073-074.

     Heat Advisory from 11 AM to 8 PM CDT Saturday for MSZ018-019-025-
     034>036-040>043-047>049-053>055-059>064-072.

     Extreme Heat Warning until 8 PM CDT this evening for MSZ040>043-
     047>049-053>055-059>064-072.

LA...Heat Advisory from 11 AM to 8 PM CDT Saturday for LAZ007>009-015-
     016-023>026.

     Extreme Heat Warning until 8 PM CDT this evening for LAZ007>009-
     015-016-023>026.

AR...Heat Advisory until 8 PM CDT this evening for ARZ074-075.

     Heat Advisory from 11 AM to 8 PM CDT Saturday for ARZ074-075.

&&

EC/SW

Special Weather Statement
National Weather Service Jackson MS
334 PM CDT Fri Aug 21 2026

MSZ049-055-056-212130-
Smith MS-Rankin MS-Simpson MS-
334 PM CDT Fri Aug 21 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN RANKIN...
NORTHEASTERN SIMPSON AND NORTHWESTERN SMITH COUNTIES THROUGH 430 PM
CDT...

At 334 PM CDT, Doppler radar was tracking a strong thunderstorm near
Johns, or 10 miles southeast of Brandon, moving south at 10 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
D'Lo, Puckett, Braxton, Star, Cato, White Oak, Monterey, Johns, and
Piney Woods.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
central Mississippi.

&&

LAT...LON 3219 9012 3227 8973 3222 8973 3222 8971
      3200 8964 3203 8985 3190 8999
TIME...MOT...LOC 2034Z 343DEG 10KT 3217 8988

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

SAS

Special Weather Statement
National Weather Service Jackson MS
344 PM CDT Fri Aug 21 2026

LAZ024>026-MSZ060-212130-
Tensas LA-Concordia LA-Catahoula LA-Adams MS-
344 PM CDT Fri Aug 21 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN TENSAS...
NORTHEASTERN CONCORDIA...NORTHEASTERN CATAHOULA PARISHES IN
NORTHEASTERN LOUISIANA AND NORTH CENTRAL ADAMS COUNTIES THROUGH 430
PM CDT...

At 344 PM CDT, Doppler radar was tracking a strong thunderstorm near
Sicily Island, or 15 miles east of Harrisonburg, moving southeast at
20 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This strong thunderstorm will be near...
  Clayton and Lee Bayou around 350 PM CDT.
  Waterproof and Spokane around 400 PM CDT.
  Ferriday around 410 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.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
northeastern Louisiana...and southwestern Mississippi.

&&

LAT...LON 3185 9172 3195 9160 3188 9159 3188 9158
      3191 9154 3191 9153 3193 9151 3181 9135
      3176 9136 3177 9129 3176 9128 3175 9130
      3175 9131 3173 9131 3158 9151
TIME...MOT...LOC 2044Z 317DEG 18KT 3185 9158

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

OAJ

Special Weather Statement
National Weather Service Jackson MS
426 PM CDT Fri Aug 21 2026

MSZ045-051-052-212230-
Lauderdale MS-Newton MS-Neshoba MS-
426 PM CDT Fri Aug 21 2026

...A STRONG THUNDERSTORM WILL IMPACT NEWTON...SOUTH CENTRAL NESHOBA
AND WEST CENTRAL LAUDERDALE COUNTIES THROUGH 530 PM CDT...

At 426 PM CDT, Doppler radar was tracking a strong thunderstorm near
Union, moving southeast at 15 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Newton, Union, Decatur, Hickory, Chunky, Stratton, Neshoba, Prospect,
and Little Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
east central Mississippi.

&&

LAT...LON 3222 8915 3222 8918 3257 8930 3266 8909
      3235 8882
TIME...MOT...LOC 2126Z 332DEG 12KT 3255 8917

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SAS

Special Weather Statement
National Weather Service Jackson MS
426 PM CDT Fri Aug 21 2026

MSZ045-046-212230-
Kemper MS-Neshoba MS-
426 PM CDT Fri Aug 21 2026

...STRONG THUNDERSTORMS WILL IMPACT KEMPER AND EASTERN NESHOBA
COUNTIES THROUGH 530 PM CDT...

At 426 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms over Bluff Springs, or 10 miles west of De Kalb, moving
southeast at 15 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This strong thunderstorm will be near...
  Bluff Springs around 430 PM CDT.
  De Kalb around 440 PM CDT.
  Damascus and Liberty around 445 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3258 8898 3293 8903 3292 8893 3293 8893
      3293 8850 3258 8840
TIME...MOT...LOC 2126Z 332DEG 12KT 3282 8882

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SAS

Preliminary Local Storm Report
National Weather Service Jackson MS
428 PM CDT Fri Aug 21 2026

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

0354 PM     Tstm Wnd Dmg     Moselle                 31.51N 89.28W
08/21/2026                   Jones              MS   Emergency Mngr

            Tree downed on powerline and across road
            around the 1100 block of Moselle Rd.

&&

DC

Preliminary Local Storm Report
National Weather Service Jackson MS
432 PM CDT Fri Aug 21 2026

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

0343 PM     Tstm Wnd Dmg     2 NE Calhoun            31.72N 89.18W
08/21/2026                   Jones              MS   Emergency Mngr

            Tree downed across Service Rd at Mullican
            Rd. Likely due to wind gusts from storm
            outflow.

&&

DC