Alert archive / Louisiana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 49, NWS New Orleans, LA

May 7, 1994East Baton Rouge Parish, West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 7, 1994, 9:14 PM CDT for East Baton Rouge Parish, West Baton Rouge Parish, Louisiana. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
May 7, 1994, 9:14 PM CDT (02:14 UTC)
Expired
May 7, 1994, 10:00 PM CDT
In force
46 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties East Baton Rouge Parish, LA, West Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 2.2 hours before the alert went out and 147 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 00:00Z on 1994-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1422 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 00:00Z on 1994-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.193958Sfc1 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
1422 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBTR 080215 RRA
SVRBTR
LAC033-037-121-080300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BATON ROUGE LA
914 PM CDT SAT MAY 7 1994
 
THE NATIONAL WEATHER SERVICE IN BATON ROUGE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN EAST CENTRAL LOUISIANA
 
   ...EAST BATON ROUGE PARISH...EAST FELICIANA PARISH
   ...WEST BATON ROUGE PARISH
 
RADAR SHOWED SEVERE THUNDERSTORMS FROM BETWEEN CLINTON AND NORWOOD
...SOUTHWEST BETWEEN ETHEL AND NEW ROADS...CONTINUING SOUTHWEST
TO LIVONIA.  MOVEMENT WAS SOUTHEAST ABOUT 30 MPH.  THESE STORMS
WILL MOVE TO CLINTON...ZACHARY AND THE NORTH PART OF WEST BATON
ROUGE PARISH WITHIN THE HALF HOUR.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY F8ROM WINDOWS UNTIL THE STORM HAS PASSED.

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, May 7, 8:35 PM CDT, 39 minutes before
LAZ038>040-045-046-049>070-LAZ501-LAZ502-080240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW ORLEANS LA
835 PM CDT SAT MAY 7 1994

...SPECIAL MARINE WARNING IN EFFECT FOR LAKES PONTCHARTRAIN AND
   MAUREPAS UNTIL 10 PM CDT...

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2 AM CDT FOR ALL OF
   SOUTHEAST LOUISIANA...

AT 830 PM...RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS...SOME
OF WHICH WERE STRONG WITH HEAVY RAINFALL...CONTINUING FROM SIMMESPORT
AND OPELOUSAS LOUISIANA SOUTHEAST TO MANDEVILLE AND LAKE PONTCHARTRAIN.
THE STRONGEST STORMS WERE LOCATED BETWEEN SIMMESPORT AND OPELOUSAS...AS
WELL AS OVER THE NORTH PORTION OF LAKE PONTCHARTRAIN.  THESE THUNDERSTORMS
MAY PRODUCE HAIL...DANGEROUS LIGHTNING...STRONG GUSTY WINDS WITH HEAVY
RAINFALL AND HIGHER WAVES ON THE LAKES...AS WELL AS THE POSSIBILITY OF
WATERSPOUTS.  SMALL CRAFT SHOULD SEEK SAFE HARBOR IMMEDIATELY.  THESE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.
Special weather statement, May 7, 8:41 PM CDT, 33 minutes before
LAZ038>040-045-046-049>070-LAZ501-LAZ502-080240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW ORLEANS LA
835 PM CDT SAT MAY 7 1994

...SPECIAL MARINE WARNING IN EFFECT FOR LAKES PONTCHARTRAIN AND
   MAUREPAS UNTIL 10 PM CDT...

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2 AM CDT FOR ALL OF
   SOUTHEAST LOUISIANA...

AT 830 PM...RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS...SOME
OF WHICH WERE STRONG WITH HEAVY RAINFALL...CONTINUING FROM SIMMESPORT
AND OPELOUSAS LOUISIANA SOUTHEAST TO MANDEVILLE AND LAKE PONTCHARTRAIN.
THE STRONGEST STORMS WERE LOCATED BETWEEN SIMMESPORT AND OPELOUSAS...AS
WELL AS OVER THE NORTH PORTION OF LAKE PONTCHARTRAIN.  THESE THUNDERSTORMS
MAY PRODUCE HAIL...DANGEROUS LIGHTNING...STRONG GUSTY WINDS WITH HEAVY
RAINFALL AND HIGHER WAVES ON THE LAKES...AS WELL AS THE POSSIBILITY OF
WATERSPOUTS.  SMALL CRAFT SHOULD SEEK SAFE HARBOR IMMEDIATELY.  THESE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 7:28 PM CDTSevere Thunderstorm WarningLIXAvoyelles62 min
May 7, 7:57 PM CDTSevere Thunderstorm WarningLIXConcordia33 min
May 7, 8:27 PM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana63 min
May 7, 9:14 PM CDTSevere Thunderstorm WarningLIXEast Feliciana39 min
May 7, 10:07 PM CDTSevere Thunderstorm WarningLIXAscension, Livingston68 min
May 7, 10:07 PM CDTSevere Thunderstorm WarningLIXEast Baton Rouge31 min
May 7, 10:16 PM CDTSevere Thunderstorm WarningLIXSaint James, Saint John the Baptist59 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1994Every severe thunderstorm warning in 1994

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.