Alert archive / Mississippi / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 93, NWS Memphis, TN

May 11, 2023DeSoto County, Tate County, Tunica County, Mississippi; Crittenden County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at May 11, 2023, 3:19 PM CDT for DeSoto County, Tate County, Tunica County, Mississippi; Crittenden County, Arkansas. It was in force for 26 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
May 11, 2023, 3:19 PM CDT (20:19 UTC)
Expired
May 11, 2023, 3:45 PM CDT
In force
26 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Crittenden County, AR, DeSoto County, MS, Tate County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 61 km from the middle of the area, began a volume at 20:23 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, 8.3 hours before the alert went out and 281 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, Jackson, MS at 12:00Z on 2023-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 522 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, Jackson, MS at 12:00Z on 2023-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
522 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 11, 2:38 PM CDT, 41 minutes earlier.

Area forecast discussion, May 11, 2:38 PM CDT, 41 minutes before
Area Forecast Discussion
National Weather Service Memphis TN
238 PM CDT Thu May 11 2023

...New SYNOPSIS, DISCUSSION...

.SYNOPSIS...
Issued at 219 PM CDT Thu May 11 2023

Typical early summer like conditions will continue to occur across
the Mid-South through the weekend with temperatures in the upper
80s to around 90 degrees with chances for mainly diurnal
convection. Less humid conditions will return by midweek behind a
cold front.

&&

.DISCUSSION...
(This evening through next Wednesday)
Issued at 219 PM CDT Thu May 11 2023

A shortwave will continue to move through the Mid-South tonight into
early Friday. Convection in association with the shortwave is
beginning to reintensify as it moves into the CWA as current
temperatures are in the lower to mid 80s and dewpoints in the mid
to upper 60s. Can't rule out some pulse severe thunderstorms
occurring especially this evening before sunset.

As the shortwave lifts northeastward out of the region, upper
ridging will begin to occur across the Mid-South. This will occur
for the entire weekend. Chances for mainly diurnal convection will
occur each day. The NAM is a bit stronger with the ridge, thus
doesn't show as much convection as the GFS.

The ridge will break down on Monday allowing a cold front to sink
into the Mid-South. Increased chances for showers and thunderstorms
will occur along and ahead of the front. Some storms could be
strong to severe during peak heating, but no widespread severe
weather is expected.

Less humid conditions will filter in the region by Wednesday and
Thursday as surface high pressure builds over the Mid-South. Highs
will remain in the upper 70s to mid 80s.

KRM

&&

.AVIATION...
(18Z TAFS)
Issued at 1255 PM CDT Thu May 11 2023

Vicinity thunderstorms and showers will form and continue through
the TAF sites this afternoon/evening as the low pressure system
continues to move NE. MVFR/IFR conditions are expected by late
afternoon and will prevail throughout the TAF cycle. Winds are
anticipated to be between 5-10kts in all TAF sites.

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None.
MO...None.
MS...Flash Flood Watch through Saturday afternoon for MSZ001-007-008-
     011-012-020.

TN...None.
&&

PUBLIC FORECAST...KRM
AVIATION...GNC

In the hours before

Special weather statement, May 11, 2:05 PM CDT, 1 hour 14 minutes before
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Special weather statement, May 11, 2:31 PM CDT, 48 minutes before
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Special weather statement, May 11, 2:56 PM CDT, 23 minutes before
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Special weather statement, May 11, 2:59 PM CDT, 20 minutes before
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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 11, 9:42 AM CDTFlash Flood WatchMEGCoahoma, DeSoto, Panola, Quitman, Tallahatchie, Tate and 1 more26 days
May 11, 2:05 PM CDTSpecial Weather StatementMEGCoahoma25 min
May 11, 2:31 PM CDTSpecial Weather StatementMEGQuitman29 min
May 11, 2:59 PM CDTSpecial Weather StatementMEGQuitman, Tunica31 min
May 11, 3:42 PM CDTSevere Thunderstorm WarningMEGDeSoto, Tate, Tunica48 min
May 11, 3:51 PM CDTSpecial Weather StatementMEGCalhoun, Yalobusha24 min
May 11, 4:17 PM CDTSpecial Weather StatementMEGCalhoun, Chickasaw, Lafayette28 min
May 11, 4:47 PM CDTSpecial Weather StatementMEGChickasaw, Lafayette, Pontotoc28 min
May 11, 5:03 PM CDTSpecial Weather StatementMEGLee, Monroe42 min
May 11, 5:08 PM CDTSpecial Weather StatementMEGMarshall, Pontotoc, Union37 min
May 11, 5:37 PM CDTSpecial Weather StatementMEGBenton, Marshall, Tippah38 min
May 11, 5:39 PM CDTSpecial Weather StatementMEGAlcorn, Itawamba, Lee, Prentiss36 min
May 11, 6:13 PM CDTSpecial Weather StatementMEGAlcorn, Prentiss, Tishomingo47 min
May 11, 6:43 PM CDTSpecial Weather StatementMEGTishomingo47 min
May 11, 4:21 PM CDTSevere Thunderstorm WarningMEGShelby, Tipton39 min
May 11, 4:58 PM CDTSpecial Weather StatementMEGTipton32 min
May 11, 5:23 PM CDTSpecial Weather StatementMEGLauderdale37 min
May 11, 6:16 PM CDTSpecial Weather StatementMEGFayette, Hardeman44 min
May 11, 2:56 PM CDTSpecial Weather StatementMEGCross34 min
May 11, 3:26 PM CDTSpecial Weather StatementMEGPoinsett34 min
May 11, 3:57 PM CDTSpecial Weather StatementMEGCraighead33 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2023Severe Thunderstorm Warnings in Arkansas, 2023Every severe thunderstorm warning in 2023

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.