Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 70, NWS Jackson, MS

March 5, 1998Jasper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 5, 1998, 6:43 PM CST for Jasper County, Mississippi. It was in force for 47 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
Mar 5, 1998, 6:43 PM CST (00:43 UTC)
Expired
Mar 5, 1998, 7:30 PM CST
In force
47 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Jasper County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.7 hours before the alert went out and 96 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 00:00Z on 1998-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 776 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 00:00Z on 1998-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
776 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

814 
WUUS1 KJAN 060044
SVRJAN
MSC061-060130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
643 PM CST THU MAR 5 1998
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...JASPER COUNTY
 
AT 642 PM...RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5 MILES WEST OF
HEIDELBERG...MOVING EAST AT 25 MPH. THE STORM WILL PASS NEAR OR JUST
WEST OF HEIDELBERG BY 7 PM.
 
IF YOU ARE OUTSIDE...SEEK SHELTER IN A STRONG BUILDING AWAY FROM
WINDOWS.  DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
<
 
74

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 5, 7:02 PM CSTSevere Thunderstorm WarningJANClarke58 min
Mar 5, 10:04 PM CSTSevere Thunderstorm WarningJANGrenada56 min
Mar 5, 10:07 PM CSTSevere Thunderstorm WarningJANClaiborne, Jefferson68 min
Mar 5, 11:13 PM CSTSevere Thunderstorm WarningJANJefferson47 min
Mar 6, 12:44 PM CSTFlash Flood WarningJANCarroll2 hr
Mar 6, 1:08 PM CSTSevere Thunderstorm WarningJANGrenada37 min
Mar 6, 5:49 PM CSTSevere Thunderstorm WarningJANClarke26 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.