Alert archive / Mississippi / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 7, NWS Memphis, TN

February 11, 1993Clay County, Oktibbeha County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Feb 11, 1993, 7:39 PM CST for Clay County, Oktibbeha County, Mississippi. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Feb 11, 1993, 7:39 PM CST (01:39 UTC)
Expired
Feb 11, 1993, 8:45 PM CST
In force
66 min
Issued by
NWS Memphis, TN
Area
Whole counties

Counties Clay County, MS, Oktibbeha County, MS

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 1.7 hours before the alert went out and 168 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, Centreville/Bibb, AL at 00:00Z on 1993-02-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 368 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, Centreville/Bibb, AL at 00:00Z on 1993-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 square meters per square second.1939587897117Sfc1 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
368 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
-17 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 7:26 PM CSTSevere Thunderstorm WarningMEGChickasaw64 min
Feb 11, 9:14 PM CSTSevere Thunderstorm WarningMEGLowndes46 min
Feb 11, 8:59 PM CSTSevere Thunderstorm WarningMEGSt. Francis46 min
Feb 11, 9:57 PM CSTSevere Thunderstorm WarningMEGCross63 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1993Every severe thunderstorm warning in 1993

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.