Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 252, NWS Shreveport, LA

June 5, 1998Caddo Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jun 5, 1998, 8:29 AM CDT for Caddo Parish, Louisiana. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 5, 1998, 8:29 AM CDT (13:29 UTC)
Expired
Jun 5, 1998, 9:15 AM CDT
In force
46 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Caddo Parish, LA

The radar

The Shreveport radar (KSHV), 15 km from the middle of the area, began a volume at 13:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jun 5, 8:45 AM CDTThunderstorm Wind 52Shreveport, LALarge oak tree toppled across a house.
Jun 5, 9:00 AM CDTThunderstorm Wind 58Shreveport, LASeveral large trees down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 1.5 hours before the alert went out and 17 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, Shreveport, LA at 12:00Z on 1998-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1882 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, Shreveport, LA at 12:00Z on 1998-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 295 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
1882 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
295 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 051329 RRA
SVRSHV
LAC017-051415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
829 AM CDT FRI JUN 5 1998

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CADDO PARISH IN NORTHWESTERN LOUISIANA

* UNTIL 915 AM CDT

* AT 825 AM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES WEST OF SHREVEPORT.
  THE THUNDERSTORM WAS MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOORINGSPORT LOUISIANA AT 840 AM CDT
  SHREVEPORT LOUISIANA AT 845 AM CDT

THIS LINE OF STORMS WILL LIKELY PRODUCE STRONG DAMAGING WINDS IN
EXCESS 60 MPH. BE A(LERT FOR DOWNED TREES AND POWER LINES. IF YOU ARE
OUTSIDE...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STRONG
BUILDING. STAY AWAY FROM WINDOWS.

07/03

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 4, 11:45 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo60 min
Jun 5, 12:20 AM CDTSevere Thunderstorm WarningSHVWebster60 min
Jun 5, 12:40 AM CDTSevere Thunderstorm WarningSHVBossier, Caddo45 min
Jun 5, 12:49 AM CDTSevere Thunderstorm WarningSHVClaiborne61 min
Jun 5, 8:45 AM CDTSevere Thunderstorm WarningSHVDe Soto45 min
Jun 5, 8:45 AM CDTSevere Thunderstorm WarningSHVBossier45 min
Jun 5, 9:06 AM CDTSevere Thunderstorm WarningSHVWebster44 min
Jun 5, 9:11 AM CDTSevere Thunderstorm WarningSHVBienville, Red River49 min
Jun 5, 9:24 AM CDTSevere Thunderstorm WarningSHVClaiborne51 min
Jun 5, 9:28 AM CDTSevere Thunderstorm WarningSHVNatchitoches47 min
Jun 5, 9:54 AM CDTSevere Thunderstorm WarningSHVJackson, Winn46 min
Jun 5, 9:54 AM CDTSevere Thunderstorm WarningSHVLincoln46 min
Jun 5, 10:20 AM CDTSevere Thunderstorm WarningSHVOuachita, Union60 min
Jun 5, 10:20 AM CDTSevere Thunderstorm WarningSHVCaldwell60 min
Jun 5, 10:48 AM CDTSevere Thunderstorm WarningSHVLaSalle47 min
Jun 5, 6:08 PM CDTSevere Thunderstorm WarningSHVSabine62 min
Jun 5, 6:36 PM CDTSevere Thunderstorm WarningSHVNatchitoches64 min
Jun 5, 6:57 PM CDTSevere Thunderstorm WarningSHVGrant63 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.