Alert archive / Mississippi / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 376, NWS Jackson, MS

September 12, 20264 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Sep 12, 2026, 3:40 PM CDT for 4 counties in Mississippi. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 12, 2026, 3:40 PM CDT (20:40 UTC)
Expired: Sep 12, 2026, 4:45 PM CDT
In force: 65 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kemper County, MS, Neshoba County, MS, Noxubee County, MS, Winston County, MS

The radar

The Columbus AFB radar (KGWX), 118 km from the middle of the area, began a volume at 20:43 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.7 hours before the alert went out and 134 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: 1159 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 12, 3:22 PM CDT, 18 minutes earlier. Its key messages:

Dangerous levels of heat stress will continue to be the primary concern through early this week.

Area forecast discussion, Sep 12, 3:22 PM CDT, 18 minutes before

Area Forecast Discussion
National Weather Service Jackson MS
322 PM CDT Sat Sep 12 2026

...New DISCUSSION...

.KEY MESSAGES...

- Dangerous levels of heat stress will continue to be the primary
  concern through early this week.

&&

.DISCUSSION...
Issued at 300 PM CDT Sat Sep 12 2026

Remainder of this weekend: As anticipated previously, storms have
developed along a boundary extending from central AR southeast
across northern portions of our forecast area. A favorable
environment for strong/severe microbursts with vertical totals
near 27 deg C and DCAPE near 1500 j/kg is supporting few intense
storms with marginally severe wind gusts, and the storm threat
should continue to the early evening hours. Another round of
storms is expected Sunday afternoon a little further south than
today, and we'll need to monitor for additional severe microburst
threats. Otherwise, dangerous heat is on the increase and we have
moved forward with the issuance of a heat advisory for mainly the
western two thirds of the area where heat indices are forecast to
exceed 105. /EC/

Monday through Wednesday: With the building ridge, temps will
trend upward again, with highs in the triple digits possible
across the Delta region. This airmass will remain seasonably
humid, though we expect to see increasing daytime mixing as we
head into next week with dewpoints dropping into the 60s during
the afternoon hours over much of the area. Still with conditions
being so warm, heat indices will approach critical thresholds as
early as today across northwest MS/north LA/southeast AR and over
much of the western half of the forecast area by tomorrow.
Additional advisories may be warranted for a portion of our area,
and we continue to highlight the increasing heat stress concerns
in graphical products.

Thursday through next Saturday: By mid to late week, low level
flow will become increasingly easterly thanks to the orientation
of the surface high, ushering in a relatively drier airmass. This
airmass will still support hot days, but with dewpoints dropping
into the 60s - perhaps even the 50s as times during daytime mixing
- it could greatly alleviate heat stress danger through the end
of the forecast period. Deep layer moisture will begin to increase
again late Friday into next Saturday, with returning potential
for diurnal convection. /DL/EC/

&&

.AVIATION...
(18Z TAFS)
Issued at 1254 PM CDT Sat Sep 12 2026

Afternoon thunderstorms expected along our northern corridor, with
showers/ts possible but unlikely elsewhere. VFR conditions will
prevail eschewing momentary dips attendant with convection at the
aforementioned sites./OAJ/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       73  95  73  97 /  10  20   0   0
Meridian      72  96  72  99 /  10  30   0   0
Vicksburg     73  95  73  97 /  10  20   0   0
Hattiesburg   73  95  73  97 /  10  20   0  10
Natchez       74  96  74  97 /  10  20   0  20
Greenville    73  99  74 100 /  10  10   0   0
Greenwood     72  98  72 100 /  10  10   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 11 AM to 7 PM CDT Sunday for MSZ018-019-025-
     034>036-040>043-047>049-053>055-059>064-072.

LA...Heat Advisory from 11 AM to 7 PM CDT Sunday for LAZ007>009-015-
     016-023>026.

AR...Heat Advisory from 11 AM to 7 PM CDT Sunday for ARZ074-075.

&&

EC/OAJ

In the hours before

Special weather statement, Sep 12, 2:00 PM CDT, 1 hour 40 minutes before

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Special weather statement, Sep 12, 2:04 PM CDT, 1 hour 36 minutes before

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Special weather statement, Sep 12, 2:39 PM CDT, 1 hour 1 minute before

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Special weather statement, Sep 12, 2:59 PM CDT, 41 minutes before

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Local storm report, Sep 12, 3:03 PM CDT, 37 minutes before

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Special weather statement, Sep 12, 3:19 PM CDT, 21 minutes before

Special Weather Statement
National Weather Service Jackson MS
319 PM CDT Sat Sep 12 2026

MSZ038-039-045-046-122100-
Kemper MS-Neshoba MS-Winston MS-Noxubee MS-
319 PM CDT Sat Sep 12 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN NOXUBEE...WESTERN
KEMPER...SOUTHEASTERN WINSTON AND EASTERN NESHOBA COUNTIES THROUGH
400 PM CDT...

At 319 PM CDT, Doppler radar was tracking a strong thunderstorm over
Nanih Waiya, or 14 miles northeast of Philadelphia, moving southeast
at 25 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...
  Preston around 325 PM CDT.
  Gholson and Bluff Springs around 335 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3286 8921 3308 8896 3299 8862 3266 8874
      3259 8896
TIME...MOT...LOC 2019Z 298DEG 24KT 3293 8896

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

SAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 12, 1:03 PM CDT	Special Weather Statement	JAN	Choctaw	57 min
Sep 12, 1:06 PM CDT	Special Weather Statement	JAN	Carroll, Grenada	54 min
Sep 12, 1:28 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery	62 min
Sep 12, 1:29 PM CDT	Special Weather Statement	JAN	Noxubee	46 min
Sep 12, 1:32 PM CDT	Heat Advisory	JAN	Adams, Bolivar, Carroll, Claiborne, Copiah, Franklin and 19 more	29 hr
Sep 12, 2:00 PM CDT	Special Weather Statement	JAN	Attala	45 min
Sep 12, 2:04 PM CDT	Special Weather Statement	JAN	Lowndes	26 min
Sep 12, 2:39 PM CDT	Special Weather Statement	JAN	Leake	51 min
Sep 12, 2:41 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	49 min
Sep 12, 2:59 PM CDT	Special Weather Statement	JAN	Clay	31 min
Sep 12, 3:19 PM CDT	Special Weather Statement	JAN	Neshoba	41 min
Sep 12, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	74 min
Sep 12, 4:20 PM CDT	Special Weather Statement	JAN	Newton, Scott	40 min
Sep 12, 4:52 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton, Scott, Smith	61 min
Sep 12, 4:55 PM CDT	Special Weather Statement	JAN	Lauderdale	65 min
Sep 12, 5:21 PM CDT	Special Weather Statement	JAN	Rankin	54 min
Sep 12, 5:37 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Rankin	53 min
Sep 12, 5:55 PM CDT	Special Weather Statement	JAN	Scott, Smith	65 min
Sep 12, 6:01 PM CDT	Flash Flood Warning	JAN	Lauderdale	119 min
Sep 12, 6:46 PM CDT	Special Weather Statement	JAN	Morehouse	59 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2026 Every 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.