Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 207, NWS Jackson, MS

April 27, 1998Franklin Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Apr 27, 1998, 11:08 PM CDT for Franklin Parish, Louisiana. 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
Apr 27, 1998, 11:08 PM CDT (04:08 UTC)
Expired
Apr 27, 1998, 11:55 PM CDT
In force
47 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Franklin Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 27, 9:00 PM CDTTornado WatchSPC3 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.1 hours before the alert went out and 151 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 1998-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1003 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 1998-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897Sfc1 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
1003 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1133 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

606 
WUUS1 KJAN 280408 RRA
SVRJAN
LAC041-280455-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1108 PM CDT MON APR 27 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN PARISH IN NORTHEASTERN LOUISIANA

* UNTIL 1155 PM CDT

* AT 1107 PM CDT... A SEVERE THUNDERSTORM IN THE VICINITY OF
  WISNER... INDICATED BY JACKSON WEATHER SERVICE DOPPLER RADAR...
  MOVING NORTHEAST 30 MPH.

* SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE...
  GILBERT                     BY 1110 PM CDT

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

76

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:59 PM CDTSevere Thunderstorm WarningJANCatahoula46 min
Apr 27, 9:37 PM CDTSevere Thunderstorm WarningJANFranklin48 min
Apr 27, 10:18 PM CDTSevere Thunderstorm WarningJANCatahoula, Franklin47 min
Apr 27, 10:36 PM CDTSevere Thunderstorm WarningJANTensas44 min
Apr 27, 11:10 PM CDTSevere Thunderstorm WarningJANMadison45 min
Apr 27, 11:48 PM CDTTornado WarningJANCatahoula, Concordia47 min
Apr 27, 11:57 PM CDTSevere Thunderstorm WarningJANMadison33 min
Apr 27, 11:59 PM CDTSevere Thunderstorm WarningJANConcordia, Tensas51 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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.