Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 6, NWS Jackson, MS

January 22, 1998Marion County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 22, 1998, 4:40 AM CST for Marion County, Mississippi. It was in force for 50 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
Jan 22, 1998, 4:40 AM CST (10:40 UTC)
Expired
Jan 22, 1998, 5:30 AM CST
In force
50 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Marion County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.7 hours before the alert went out and 110 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 00:00Z on 1998-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 00:00Z on 1998-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 square meters per square second.19395878Sfc1 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
76 J/kg
Mixed-layer CIN
-316 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
301 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KJAN 221040 RRA
SVRJAN
MSC091-221130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
440 AM CST THU JAN 22 1998
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL MISSISSIPPI
 
   ...MARION COUNTY
 
AT 440 AM DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING
INTO MARION COUNTY FROM THE WEST. THIS LINE OF STORMS WAS MOVING TOWARD
THE EAST AT 30 MPH AND WILL MOVE INTO THE COLUMBIA AREA BY 455 AM.
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
<
 
 
75

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 9:40 PM CSTFlash Flood WarningJANHinds2 hr
Jan 21, 9:59 PM CSTFlash Flood WarningJANCopiah2 hr
Jan 21, 11:03 PM CSTFlash Flood WarningJANRankin117 min
Jan 22, 1:12 AM CSTFlash Flood WarningJANClaiborne, Hinds, Warren4 hr
Jan 22, 1:12 AM CSTFlash Flood WarningJANCopiah, Rankin4 hr
Jan 22, 1:48 AM CSTSevere Thunderstorm WarningJANForrest, Lamar57 min
Jan 22, 5:10 AM CSTSevere Thunderstorm WarningJANForrest, Lamar50 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1998Every severe thunderstorm warning in 1998

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.