Alert archive / Louisiana / Tornado Warnings in 1991

Tornado Warning 9, NWS New Orleans, LA

April 28, 1991West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 28, 1991, 2:00 PM CDT for West Baton Rouge Parish, Louisiana. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Apr 28, 1991, 2:00 PM CDT (19:00 UTC)
Expired: Apr 28, 1991, 3:00 PM CDT
In force: 60 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County West Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.0 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1628 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 640 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this tornado 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, Apr 28, 8:08 AM CDT, 5 hours 52 minutes before

LAZ006-281400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BATON ROUGE LA
805 AM CDT SUN APR 28 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL NOON TODAY FOR
CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA...

RADAR SHOWED STRONG THUNDERSTORMS ALONG THE LOUISIANA...ARKANSAS AND
MISSISSIPPI STATE LINES.  THESE THUNDERSTORMS WERE MOVING NORTHEAST
AT 30 MPH.

Special weather statement, Apr 28, 9:10 AM CDT, 4 hours 50 minutes before

LAZ006-281600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BATON ROUGE LA
910 AM CDT SUN APR 28 1991

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL NOON TODAY FOR
CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA...

RADAR SHOWED THE STRONG THUNDERSTORMS CONTINUE TO THE NORTH OF THESE
PARISHES...HOWEVER...CONDITIONS REMAIN FAVORABLE FOR THUNDERSTORMS TO
DEVELOP OVER THESE PARISHES DURING THE MORNING.

PEOPLE IN THE THUNDERSTOeRM WATCH AREA SHOULD REMAIN ALERT FOR SEVERE
WEATHER CONDITIONS.

Special weather statement, Apr 28, 11:16 AM CDT, 2 hours 44 minutes before

LAZ006-281645-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BATON ROUGE LA
1115 AM CDT SUN APR 28 1991

...A SEVERE THUNDERSTORM WATCH IS CANCELLED FOR CATAHOULA AND CONCORDIA
PARISHES IN EAST CENTRAL LOUISIANA...

RADARS SHOWED THE STRONG THUNDERSTORMS CONTINUE TO THE NORTH OF THESE
PARISHES.

THE SEVERE STORMS FORECAST CENTER EXPECTS ANOTHER OUTBREAK OF SEVERE
WEATHER LATER THIS AFTERNOON AND TONIGHT WHICH WILL LIKELY INCLUDE A
LARGE PA0RT OF THE AREA.  PEOPLE THROUGHOUT EAST CENTRAL LOUISIANA
SHOULD KEEP ABREAST OF THE LATEST FORECASTS AND SEVERE WEATHER
BULLETINS ISSUED FOR YOUR LOCATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 1:22 AM CDT	Severe Thunderstorm Warning	LIX	Avoyelles	68 min
Apr 28, 2:50 AM CDT	Severe Thunderstorm Warning	LIX	Concordia	55 min
Apr 28, 1:14 PM CDT	Severe Thunderstorm Warning	LIX	Iberia, Saint Martin	31 min
Apr 28, 1:16 PM CDT	Severe Thunderstorm Warning	LIX	Ascension	29 min
Apr 28, 1:16 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, Iberville	59 min
Apr 28, 1:40 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, West Baton Rouge	65 min
Apr 28, 2:00 PM CDT	Tornado Warning	LIX	East Baton Rouge, Livingston	60 min
Apr 28, 2:20 PM CDT	Tornado Warning	LIX	East Baton Rouge, Livingston	55 min
Apr 28, 3:11 PM CDT	Severe Thunderstorm Warning	LIX	Avoyelles, Saint Landry	64 min
Apr 28, 3:23 PM CDT	Severe Thunderstorm Warning	LIX	Saint Martin	37 min
Apr 28, 3:31 PM CDT	Severe Thunderstorm Warning	LIX	Iberville, West Baton Rouge	59 min
Apr 28, 4:59 PM CDT	Severe Thunderstorm Warning	LIX	Avoyelles, Saint Landry	61 min
Apr 28, 5:37 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, Iberville	38 min
Apr 28, 6:07 PM CDT	Severe Thunderstorm Warning	LIX	West Feliciana	53 min

Nearby

Tornado Warnings in Louisiana, 1991 Every tornado warning in 1991 Tornadoes 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; the sounding from the Mesonet's radiosonde archive.