Alert archive / Texas / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS Lake Charles, LA

March 1, 1991Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 1, 1991, 8:48 AM CST for Jefferson County, Orange County, Texas. It was in force for 57 min. 1 report 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
Mar 1, 1991, 8:48 AM CST (14:48 UTC)
Expired
Mar 1, 1991, 9:45 AM CST
In force
57 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Jefferson County, TX, Orange County, TX

What was reported inside it

TimeReportWhereRemark
Mar 1, 9:00 AM CSTHail 1Jefferson, TX

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.8 hours before the alert went out and 81 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, Lake Charles Mun, LA at 12:00Z on 1991-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 564 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, Lake Charles Mun, LA at 12:00Z on 1991-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 215 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
564 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
657 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
215 m²/s²
0-3 km storm-relative helicity
385 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBPT 011448
SVRBPT
TXC245-361-011545-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PORT ARTHUR TX
848 AM CST FRI MAR 1 1991
 
THE NATIONAL WEATHER SERVICE IN PORT ARTHUR HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 AM CST
FOR PERSONS IN THE FOLLOWING COUNTIES
 
IN SOUTHEAST TEXAS
 
   ...JEFFERSON COUNTY...ORANGE COUNTY
 
 
 
 
AT 0845 CST...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM IN NORTHERN JEFFERSON COUNTY MOVGING EAST NEAR 35 MPH.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
NNNN

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, Mar 1, 3:25 AM CST, 5 hours 23 minutes before
LAZ005-006-007-008-011-012-011030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
325 AM CST FRI MAR 1 1991

AT 325 AM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWN EAST AND JUST
WEST OF DE RIDDER. THE BEAUREGARD PARISH SHERIFFS OFFICE REPORTED SOME
FLOODING OF STREETS AND LOW LYING AREAS DUE TO THE VERY HEAVY RAIN.

OTHERWISE SHOWERS AND THUNDERSTORMS COVERED MUCH OF CENTRAL AND SOUTHWEST
LOUISIANA...AND A SMALL PART OF EAST AND SOUTHEAST TEXAS. SHOWERS AND
THUNDERSTORMS WERE ALSO SHOWN OVER THE COASTAL WATERS TO 80 MILES
OFFSHORE BETWEEN FREEPORT TEXAS AND VERMILION BAY.

MOVEMENT WAS NORTHEAST AT 35 MPH.
Special weather statement, Mar 1, 4:38 AM CST, 4 hours 10 minutes before
LAZ005-006-007-008-011-012-011145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
425 AM CST FRI MAR 1 1991

...A TORNADO WATCH IS IN EFFECT FOR CENTRAL AND SOUTHWEST LOUISIANA
   UNTIL 10 AM THIS MORNING...

AT 425 AM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER SOUTHERN RAPIDES
PARISH...AND OVER THE GULF 30 MILES SOUTHWEST OF PECAN ISLAND AND 25 MILES
EAST OF GALVESTON.   THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF
THUNDERSTORMS AND RAIN THAT COVERED MUCH CENTRAL AND SOUTHWEST LOUISIANA
AND THE COASTAL AREA OF THE UPPER TEXAS COAST.   THIS AREA EXTENDED OVER
THE GULF TO OVER 125 MILES BETWEEN FREEPORT TEXAS AND ATCHAFALAYA BAY.

MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
Special weather statement, Mar 1, 5:46 AM CST, 3 hours 2 minutes before
LAZ005-006-007-008-011-012-011245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
545 AM CST FRI MAR 1 1991

...A TORNADO WATCH IS IN EFFECT FOR CENTRAL AND SOUTHWEST LOUISIANA
   UNTIL 10 AM THIS MORNING...
...A SPECIAL MARINE WARNING IS IN EFFECT FROM SABINE PASS TO WHITE
LAKE UNTIL 7 AM THIS MORNING...

AT 525 AM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWN FROM BETWEEN
BATON ROUGE AND WHITE LAKE...IN THE COASTAL WATERS FROM GALVESTON TO CAMERON
...AND NEAR ATCHAFALAYA BAY.

AREAS OF RAIN MIXED WITH SHOWERS AND THUNDERSTORMS WERE OCCURRING BETWEEN
NATHCHEZ MISSISSIPPI...DE RIDDER...AND MANSFIELD...FROM BETWEEN BATON
ROUGE AND CROWLEY TO ALONG THE COAST FROM WHITE LAKE TO VERMILION BAY...
AND OVER MUCH OF SOUTHEAST TEXAS SOUTH OF A HUNTVILLE AND KIRBYVILLE LINE
TO THE COAST FROM FROM GALVESTON TO CAMERON.
.
RAIN AND THUNDERSTORMS WERE ALSO OCCURRING IN THE GULF OUT TO 100 MILES
OFFSHORE FbROM GALVESTON TO CAMERON TO ATCHAFALAYA BAY.

MOVEMENT WAS NORTHEAST AT 35 MPH.
Special weather statement, Mar 1, 7:49 AM CST, 59 minutes before
LAZ005-006-007-008-011-012-011445-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
745 AM CST FRI MAR 1 1991

...A TORNADO WATCH IS IN EFFECT FOR CENTRAL AND SOUTHERN LOUISIANA
   UNTIL 12 NOON TODAY...
...NO WARNINGS ARE CURRENTLY IN EFFECT AT THIS TIME...

AT 725 AM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE LOCATED 15 MILES WEST OF
ALEXANDRIA...FROM VILLE PLATTE TO JUST EAST OF CROWLEY. AND AT ABBEVILLE.

ELSEWHERE WIDESPREAD RAIN SHOWERS AND THUNDERSTORMS CONTINUED OVER A LARGE
PORTION OF LOUISIANA AND SOUTHEAST TEXAS. THIS AREA OF PRECIPITATION WAS
GENERALLY SOUTH AND EAST OF A LINE FROM HOUSTON TO LOGANSPORT TO MONROE.

RAIN AND THUNDERSTORMS WERE; ALSO OCCURING OVER THE GULF FROM GALVESTON TO
80 MILES SOUTH OF CAMERON TO THE ATCHAFALAYA BAY.

MOVEMENT WAS TO THE NORTHEAST AT 35 MILES AN HOUR.

Nearby

Severe Thunderstorm Warnings in Texas, 1991Every severe thunderstorm warning in 1991

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.