Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 182, NWS New Orleans, LA

June 23, 1998East Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 23, 1998, 4:35 PM CDT for East Baton Rouge Parish, Louisiana. 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
Jun 23, 1998, 4:35 PM CDT (21:35 UTC)
Expired
Jun 23, 1998, 5:25 PM CDT
In force
50 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County East Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.6 hours before the alert went out and 138 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 12:00Z on 1998-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2367 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, Slidell Radar S, LA at 12:00Z on 1998-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 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
2367 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
699 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-11 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.

000 
TTAA00 KNEW 232135 RRA
SVRNEW
LAC033-077-121-232225-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
435 PM CDT TUE JUN 23 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A...

* SEVERE THUNDERSTORM WARNING FOR
   - SOUTHEASTERN POINTE COUPEE PARISH SOUTHEASTERN LOUISIANA
   - NORTHERN WEST BATON ROUGE PARISH SOUTHEASTERN LOUISIANA
   - WESTERN EAST BATON ROUGE PARISH SOUTHEASTERN LOUISIANA

* UNTIL 525 PM CDT

* AT 433 PM CDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 16
    MILES SOUTHEAST OF NEW ROADS OR 8 MILES EAST OF ERWINVILLE
  MOVING NORTHWEST AT 15 MPH.

  * SOME LOCATIONS IN AND NEAR THE PATH OF THIS STORM ARE...
    ERWINVILLE AT 456 PM CDT

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 23, 10:40 AM CDT, 5 hours 55 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-240000-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1040 AM CDT TUE JUN 23 1998

MOIST UNSTABLE AIR REMAINS OVER THE REGION TODAY. ISOLATED TO WIDELY
SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING
MAINLY SOUTH OF A BATON ROUGE TO SLIDELL LINE.
Special weather statement, Jun 23, 10:40 AM CDT, 5 hours 55 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-240000-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1040 AM CDT TUE JUN 23 1998

MOIST UNSTABLE AIR REMAINS OVER THE REGION TODAY. ISOLATED TO WIDELY
SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING
MAINLY SOUTH OF A BATON ROUGE TO SLIDELL LINE.
Special weather statement, Jun 23, 11:00 AM CDT, 5 hours 35 minutes before
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-250000-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1100 AM CDT TUE JUN 23 1998

MOIST UNSTABLE AIR REMAINS OVER THE REGION TODAY. SCATTERED SHOWERS AND
THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. THERE WILL BE
A MINIMAL RISK OF A SEVERE THUNDERSTORM.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 4:35 PM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Baton Rouge50 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.