Alert archive / Mississippi / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 24, NWS Jackson, MS

March 18, 1992Covington County, Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 18, 1992, 3:14 PM CST for Covington County, Lamar County, Mississippi. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Mar 18, 1992, 3:14 PM CST (21:14 UTC)
Expired
Mar 18, 1992, 3:45 PM CST
In force
31 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Covington County, MS, Lamar County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.2 hours before the alert went out and 113 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 1992-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 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 1992-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
42 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
648 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

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.

In the hours before

Special weather statement, Mar 18, 12:02 PM CST, 3 hours 12 minutes before
MSZALL-181900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1201 PM CST WED MAR 18 1992

...SEVERE THUNDERSTORMS EXPECTED THIS AFTERNOON AND EVENING...

AT 1200 NOON...A LARGE AREA OF LIGHT TO MODERATE RAIN CONTINUED TO
COVER THE MAJORITY OF MISSISSIPPI.  STRONG SOUTHERLY WINDS AT THE
SURFACE CONTINUED TO PUMP WARM MOIST AIR FROM THE GULF OF MEXICO OVER
THE STATE...BUT THE RAIN WAS PREVENTING TEMPERATURES FROM WARMING UP
INTO THE 70S.  WEST OF THE MISSISSIPPI RIVER ACROSS ARKANSAS
AND WESTERN LOUISIANA THE SUN WAS HEATING TEMPERATURES INTO THE 70S.
CONSEQUENTLY...THE MOST UNSTABLE AIR WAS STILL WEST OF
THE MISSISSIPPI RIVER...AND THUNDERSTORMS WERE RAPIDLY DEVELOPING OVER
WESTERN LOUISIANA.

THE COMBINATION OF STRONG LOW-LEVEL AND UPPER-LEVEL WINDS AND
INCREASING INSTABILITY WILL RESULT IN A STRONG POTENTIAL OF SEVERE
THUNDERSTORMS OVER MISSISSIPPI THIS AFTERNOON.  ISOLATED TORNADOES ARE
ALSO POSSIBLE IN THIS KIND OF ENVIRONMENT.  THE SEVERE WEATHER THREAT
SHOULD SPREAD RAPIDLY EASTWARD THIS AFTERNOON AND SHOULD BE ENDING
OVER EASTERN MISSISSIPPI BEFORE MIDNIGHT.

IT APPEARS STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE DEVELOP WEST
OF THE MISSISSIPPI RIVER FOR THE NEXT COUPLE OF HOURS...AND WILL
MOVE INTO WESTERN MISSISSIPPI BY THE MIDDLE OF THE AFTERNOON.
Special weather statement, Mar 18, 1:37 PM CST, 1 hour 37 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 3:24 PM CSTTornado WarningJANForrest36 min
Mar 18, 3:30 PM CSTTornado WarningJANJones45 min
Mar 18, 4:11 PM CSTTornado WarningJANWayne64 min
Mar 18, 4:30 PM CSTTornado WarningJANChoctaw45 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1992Every severe thunderstorm warning in 1992

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.