Alert archive / Mississippi / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 140, NWS Mobile, AL

August 20, 2026Stone County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Aug 20, 2026, 5:19 PM CDT for Stone County, Mississippi. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 20, 2026, 5:19 PM CDT (22:19 UTC)
Expired
Aug 20, 2026, 6:00 PM CDT
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Stone County, MS

The radar

The Mobile radar (KMOB), 99 km from the middle of the area, began a volume at 22:21 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 81 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2026-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2123 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2026-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2123 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
760 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
-31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

352 
WUUS54 KMOB 202219
SVRMOB
MSC131-202300-
/O.NEW.KMOB.SV.W.0140.260820T2219Z-260820T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
519 PM CDT Thu Aug 20 2026

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northwestern Stone County in southeastern Mississippi...

* Until 600 PM CDT.

* At 519 PM CDT, a severe thunderstorm was located 5 miles south of
  Maxie, or 5 miles northwest of Wiggins, moving west at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  northwestern Stone County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3091 8934 3091 8912 3081 8912 3082 8934
TIME...MOT...LOC 2219Z 105DEG 9KT 3090 8922 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JP
1 follow-up statement
559 
WWUS54 KMOB 202243
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
543 PM CDT Thu Aug 20 2026

MSC131-202300-
/O.CON.KMOB.SV.W.0140.000000T0000Z-260820T2300Z/
Stone MS-
543 PM CDT Thu Aug 20 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHWESTERN STONE COUNTY...

At 542 PM CDT, a severe thunderstorm was located 8 miles southwest of
Maxie, or 8 miles west of Wiggins, moving west at 10 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Wiggins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3091 8934 3091 8912 3081 8912 3082 8934
TIME...MOT...LOC 2242Z 086DEG 9KT 3089 8928 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JP

What forecasters said that day

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

NWS Mobile, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 12:39 PM CDT, 4 hours 40 minutes earlier. Its key messages:

  • Updated at 1239 PM CDT Thu Aug 20 2026
  • Abnormally hot conditions continue with a Heat Advisory in effect for all locations Thursday and Friday as afternoon heat indices rise into the 108 to 112 range.
  • Scattered afternoon thunderstorms will continue to be capable of producing brief intense rainfall, resulting in localized flooding and locally strong to damaging wind gusts.
Area forecast discussion, Aug 20, 12:39 PM CDT, 4 hours 40 minutes before
Area Forecast Discussion
National Weather Service Mobile AL
1239 PM CDT Thu Aug 20 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 1239 PM CDT Thu Aug 20 2026

- Abnormally hot conditions continue with a Heat Advisory in
  effect for all locations Thursday and Friday as afternoon heat
  indices rise into the 108 to 112 range.

- Scattered afternoon thunderstorms will continue to be capable of
  producing brief intense rainfall, resulting in localized
  flooding and locally strong to damaging wind gusts.

&&

.DISCUSSION...
Issued at 1123 AM CDT Thu Aug 20 2026

Starting off with late this morning, offshore convection
continues, fueled by ample marine instability and the remnant
landbreeze boundary. Will keep an eye on weak/subtle backbuilding
and NW propagation per recent upwind corfidi vectors from the SE,
but should remain weak enough and locked over outer waters before
dissipating. Otherwise, we'll heat on up over land areas again
today enough to reach convective T. Looks like it'll be another
similar day to yesterday with earliest convection igniting from
greatest onset forcing caused by either subtle confluence bands or
seabreeze interactions. Any boundary interactions will quickly
allow updrafts to accelerate, and with notable dry air entrainment
(DCAPE >1000j/kg), severe downburst winds will yet again be
another risk. Best timing from 2PM-7PM this afternoon. Otherwise,
no modifications needed to temperatures as guidance/trends remains
on track, with a Heat Advisory remaining in effect.

Friday and going into the weekend, we remain in general mid-level
weakness on the eastern periphery of an anonymously strong ridge
over the four corners region, with broad troughing centered over
the Ohio/TN valley. Could distinctly see a rinse- repeat of
today/yesterday again for Friday introducing another round of
strong to locally severe storms in the afternoon hours.
Additionally, went with another Heat Advisory for all areas as
heat indices reach 108-111, moreso along the I-10 corridor. Then,
going into the weekend, the aforementioned broad trough sharpens
into the mid/southern Atlantic states, helping to push (slightly)
drier air aloft into the region. Could see just enough suppression
to offset peak heating, diurnally forced convection, or at least
enough to lower coverage overall. NBM PoPs are coming into
agreement on that idea reducing coverage down to 10-20% in areas.
Still, areas of greatest forcing, enough to offset this
suppression (moreso caused by seabreeze/boundary confluence) could
get a few isolated storms going.

With this slightly drier air, it's likely we'll be introduced
with lower dewpoints, perhaps reaching the low to mid 60's for
interior AL counties which will reduce the need for heat
advisories. However, will watch the coast where it could remain
close enough, especially near/south of the I-10 corridor.

Monday into next week, focus will be on what long-range guidance
is hinting with shortwave impulses riding around the ridge from
the north-central Plains into the TN valley, and how any
sfc/mesoscale reflection could be in the form of either a NW to SE
MCS, and how far/expansive these (possible several) complexes
could become if they could clip our area. Something to watch,
otherwise it remains pretty typical for summer next week with
highs in the mid 90's and max heat indices in the 103-108 range
thanks to slightly drier air at the sfc. KLG

&&

.AVIATION...
(18Z TAFS)
Issued at 1239 PM CDT Thu Aug 20 2026

VFR conditions prevail through the period. Showers and thunderstorms
return to the area this afternoon into the early evening. These
storms are accompanied by gusty winds and drops of cigs/vis to MVFR
and even locally IFR within the strongest storms. Winds are
generally light and variable inland and become southerly to
southwesterly at 5-10 knots with periodic gusts up to 15 knots as
the afternoon seabreeze advances inland. These winds wane after
sunset and become generally northwesterly after sunrise. SS/97

&&

.MARINE...
Issued at 1123 AM CDT Thu Aug 20 2026

A light to occasionally moderate mostly westerly flow pattern will
persists late this week into next week. Winds are expected to shift
northwesterly late each night and then southwesterly in the
afternoon. Isolated to potentially scattered showers and storms can
be expected each morning with locally higher seas and winds near
storms. KLG

&&

.PRELIMINARY POINT TEMPS/POPS...
Mobile      75  95  74  95 /  10  60  20  10
Pensacola   78  93  77  93 /  10  50  30  20
Destin      79  91  79  91 /  10  50  40  20
Evergreen   72  96  70  96 /  40  60  30  10
Waynesboro  73  98  70  98 /  20  50  20  10
Camden      73  95  72  95 /  30  40  30   0
Crestview   73  95  73  95 /  20  60  30  20

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...Heat Advisory until 8 PM CDT this evening for ALZ051>060-261>266.

     Heat Advisory from 7 PM to 8 PM CDT Friday for ALZ051>060-
     261>266.

FL...Heat Advisory until 8 PM CDT this evening for FLZ201>206.

     Heat Advisory from 7 PM to 8 PM CDT Friday for FLZ201>206.

MS...Heat Advisory until 8 PM CDT this evening for MSZ067-075-076-078-
     079.

     Heat Advisory from 7 PM to 8 PM CDT Friday for MSZ067-075-076-
     078-079.

GM...None.
&&

In the hours before

Local storm report, Aug 20, 4:13 PM CDT, 1 hour 6 minutes before
Preliminary Local Storm Report
National Weather Service Mobile AL
413 PM CDT Thu Aug 20 2026

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

0356 PM     Tstm Wnd Gst     1 WNW Mobile Regional A 30.68N 88.25W
08/20/2026  M62 MPH          Mobile             AL   ASOS

            ASOS station KMOB Mobile Bates reports a
            wind gust of 62 mph.

&&

SS
Special weather statement, Aug 20, 4:29 PM CDT, 50 minutes before
Special Weather Statement
National Weather Service Mobile AL
429 PM CDT Thu Aug 20 2026

MSZ076-202215-
Greene MS-
429 PM CDT Thu Aug 20 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL GREENE COUNTY THROUGH
515 PM CDT...

At 429 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of McLain, or 9 miles west of Leakesville, moving
east at 5 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...
Leakesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3112 8882 3129 8877 3128 8849 3102 8857
TIME...MOT...LOC 2129Z 283DEG 5KT 3119 8871

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

JP
Special weather statement, Aug 20, 4:52 PM CDT, 27 minutes before
Special Weather Statement
National Weather Service Mobile AL
452 PM CDT Thu Aug 20 2026

ALZ055-056-059-202230-
Monroe AL-Conecuh AL-Escambia AL-
452 PM CDT Thu Aug 20 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN MONROE...
NORTHWESTERN ESCAMBIA AND SOUTHWESTERN CONECUH COUNTIES THROUGH 530
PM CDT...

At 452 PM CDT, Doppler radar was tracking a strong thunderstorm over
Uriah, or 10 miles south of Frisco City, moving south at 5 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...
Frisco City, McCullough, Uriah, Excel, and I65 And AL 113.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3151 8725 3120 8728 3114 8758 3119 8762
      3124 8762 3125 8766 3134 8773 3137 8773
      3141 8770 3143 8766 3143 8764 3141 8761
      3144 8757 3148 8756 3150 8761 3155 8757
TIME...MOT...LOC 2152Z 020DEG 5KT 3129 8746

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

JP
Local storm report, Aug 20, 4:58 PM CDT, 21 minutes before
Preliminary Local Storm Report
National Weather Service Mobile AL
458 PM CDT Thu Aug 20 2026

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

0357 PM     Tornado          2 WSW Hurricane         30.83N 87.93W
08/20/2026                   Baldwin            AL   Broadcast Media

            Broadcast media shared video of a tornado
            near the Tensaw River via social media. Time
            and location estimated from radar with TDS
            evident.

&&

JGC
Special weather statement, Aug 20, 4:58 PM CDT, 21 minutes before
Special Weather Statement
National Weather Service Mobile AL
458 PM CDT Thu Aug 20 2026

ALZ263-265-202245-
Mobile Coastal AL-Mobile Central AL-
458 PM CDT Thu Aug 20 2026

...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN MOBILE COUNTY
THROUGH 545 PM CDT...

At 458 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Prichard to Point Clear. Movement was southwest
at 5 mph.

HAZARD...Wind gusts up to 40 to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Midtown Mobile, Downtown Mobile, Tillmans Corner, Theodore, Bayou La
Batre, Coden, I10 And I65, and Mobile Regional Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3062 8830 3073 8821 3074 8800 3072 8800
      3072 8798 3069 8800 3068 8800 3069 8798
      3068 8798 3068 8799 3067 8798 3042 8801
      3036 8830
TIME...MOT...LOC 2158Z 048DEG 6KT 3071 8808 3045 8794

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

KLG
Local storm report, Aug 20, 5:01 PM CDT, 18 minutes before
Preliminary Local Storm Report
National Weather Service Mobile AL
501 PM CDT Thu Aug 20 2026

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

0453 PM     Marine Tstm Wind Brookley Field ASOS     30.62N 88.07W
08/20/2026  M52 MPH          Mobile             AL   ASOS

            ASOS station KBFM Mobile Brookley measured
            wind gust of 52 mph.

&&

JGC

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 19, 7:06 PM CDTSpecial Weather StatementMOBPerry39 min
Aug 20, 11:21 AM CDTHeat AdvisoryMOBGeorge, Greene, Perry, Stone, Wayne33 hr
Aug 20, 2:42 PM CDTSpecial Weather StatementMOBGeorge33 min
Aug 20, 4:22 PM CDTSevere Thunderstorm WarningMOBGeorge38 min
Aug 20, 4:29 PM CDTSpecial Weather StatementMOBGreene46 min
Aug 20, 5:22 PM CDTSevere Thunderstorm WarningMOBGeorge, Greene, Perry, Stone38 min
Aug 20, 5:53 PM CDTSpecial Weather StatementMOBPerry67 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2026Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.