Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 183, NWS Jackson, MS

April 18, 1998Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 18, 1998, 7:35 AM CDT for Smith County, Mississippi. It was in force for 35 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
Apr 18, 1998, 7:35 AM CDT (12:35 UTC)
Expired
Apr 18, 1998, 8:10 AM CDT
In force
35 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Smith County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 0.6 hours before the alert went out and 64 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 1998-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1036 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

391 
WUUS1 KJAN 181236 RRA
SVRJAN
MSC129-181310-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
735 AM CDT SAT APR 18 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SMITH COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 810 AM CDT

* AT 735 AM CDT... A SEVERE THUNDERSTORM 11 MILES NORTHWEST OF
  RALEIGH... INDICATED BY DOPPLER RADAR... MOVING NORTHEAST 45 MPH.

* THIS STORM WILL MAINLY AFFECT SMALLER COMMUNITIES AND RURAL AREAS.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

64

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 7:12 PM CDTSevere Thunderstorm WarningJANForrest33 min
Apr 17, 7:31 PM CDTTornado WarningJANMarion49 min
Apr 17, 7:51 PM CDTSevere Thunderstorm WarningJANLamar44 min
Apr 17, 8:04 PM CDTSevere Thunderstorm WarningJANCovington, Forrest, Jones51 min
Apr 17, 8:41 PM CDTSevere Thunderstorm WarningJANClarke, Jasper49 min
Apr 17, 9:56 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Lawrence49 min
Apr 17, 10:19 PM CDTSevere Thunderstorm WarningJANSimpson, Smith36 min
Apr 17, 10:45 PM CDTSevere Thunderstorm WarningJANFranklin, Lincoln50 min
Apr 17, 10:54 PM CDTSevere Thunderstorm WarningJANJasper36 min
Apr 17, 11:30 PM CDTSevere Thunderstorm WarningJANClarke, Lauderdale50 min
Apr 18, 12:11 AM CDTSevere Thunderstorm WarningJANSmith34 min
Apr 18, 12:38 AM CDTSevere Thunderstorm WarningJANJasper, Newton32 min
Apr 18, 1:07 AM CDTSevere Thunderstorm WarningJANLauderdale48 min
Apr 18, 6:06 AM CDTSevere Thunderstorm WarningJANLincoln49 min
Apr 18, 6:24 AM CDTSevere Thunderstorm WarningJANRankin, Simpson46 min
Apr 18, 7:13 AM CDTSevere Thunderstorm WarningJANRankin, Simpson47 min
Apr 18, 7:56 AM CDTSevere Thunderstorm WarningJANCopiah34 min
Apr 18, 8:07 AM CDTSevere Thunderstorm WarningJANSimpson33 min
Apr 18, 8:09 AM CDTSevere Thunderstorm WarningJANNewton36 min
Apr 18, 8:21 AM CDTSevere Thunderstorm WarningJANRankin34 min
Apr 18, 8:32 AM CDTSevere Thunderstorm WarningJANLauderdale33 min
Apr 18, 8:44 AM CDTSevere Thunderstorm WarningJANScott, Smith51 min
Apr 18, 8:47 AM CDTSevere Thunderstorm WarningJANCopiah33 min
Apr 18, 8:51 AM CDTSevere Thunderstorm WarningJANFranklin34 min
Apr 18, 8:52 AM CDTSevere Thunderstorm WarningJANKemper33 min
Apr 18, 9:05 AM CDTSevere Thunderstorm WarningJANHinds20 min
Apr 18, 9:20 AM CDTSevere Thunderstorm WarningJANRankin50 min
Apr 18, 10:03 AM CDTSevere Thunderstorm WarningJANCopiah, Rankin, Simpson47 min
Apr 18, 12:20 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Simpson45 min
Apr 18, 2:11 PM CDTSevere Thunderstorm WarningJANForrest60 min
Apr 18, 3:28 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Lawrence32 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.