Alert archive / Louisiana / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 83, NWS New Orleans, LA

April 26, 1991East Baton Rouge Parish, West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 26, 1991, 9:08 PM CDT for East Baton Rouge Parish, West Baton Rouge Parish, Louisiana. It was in force for 37 min.

The area

The counties it named.

The facts

Issued: Apr 26, 1991, 9:08 PM CDT (02:08 UTC)
Expired: Apr 26, 1991, 9:45 PM CDT
In force: 37 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.1 hours before the alert went out and 196 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: 2538 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 8.8

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 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, Apr 26, 3:42 PM CDT, 5 hours 26 minutes before

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Special weather statement, Apr 26, 4:33 PM CDT, 4 hours 35 minutes before

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Special weather statement, Apr 26, 5:34 PM CDT, 3 hours 34 minutes before

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Special weather statement, Apr 26, 6:31 PM CDT, 2 hours 37 minutes before

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Special weather statement, Apr 26, 7:29 PM CDT, 1 hour 39 minutes before

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Special weather statement, Apr 26, 8:32 PM CDT, 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 9:08 PM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee	37 min
Apr 27, 4:40 PM CDT	Tornado Warning	LIX	Catahoula	20 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1991 Every 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; the sounding from the Mesonet's radiosonde archive.