Alert archive / Louisiana / Tornado Warnings in 1991

Tornado Warning 11, NWS Lake Charles, LA

May 4, 1991Allen Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at May 4, 1991, 2:52 AM CDT for Allen Parish, Louisiana. It was in force for 38 min.

The area

The counties it named.

The facts

Issued: May 4, 1991, 2:52 AM CDT (07:52 UTC)
Expired: May 4, 1991, 3:30 AM CDT
In force: 38 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

County Allen Parish, LA

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 7.9 hours before the alert went out and 253 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: 437 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.3

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, May 3, 10:39 PM CDT, 4 hours 13 minutes before

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Local storm report, May 3, 11:02 PM CDT, 3 hours 50 minutes before

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Special weather statement, May 4, 12:59 AM CDT, 1 hour 53 minutes before

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Local storm report, May 4, 1:18 AM CDT, 1 hour 34 minutes before

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Local storm report, May 4, 2:16 AM CDT, 36 minutes before

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The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 10:18 PM CDT	Severe Thunderstorm Warning	LCH	Grant, Rapides	57 min
May 3, 11:13 PM CDT	Severe Thunderstorm Warning	LCH	Grant, LaSalle, Rapides	62 min
May 4, 12:13 AM CDT	Severe Thunderstorm Warning	LCH	LaSalle, Rapides	47 min
May 4, 1:04 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	56 min
May 4, 1:30 AM CDT	Flash Flood Warning	LCH	Rapides	4 hr
May 4, 2:05 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Rapides, Vernon	55 min
May 4, 3:05 AM CDT	Tornado Warning	LCH	Evangeline	55 min
May 4, 3:09 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard	66 min
May 4, 4:10 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard	65 min
May 4, 4:10 AM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	65 min
May 3, 7:35 PM CDT	Flash Flood Warning	LCH	Nacogdoches	115 min
May 3, 8:19 PM CDT	Severe Thunderstorm Warning	LCH	Nacogdoches	56 min
May 3, 8:34 PM CDT	Severe Thunderstorm Warning	LCH	San Augustine	56 min
May 3, 9:08 PM CDT	Severe Thunderstorm Warning	LCH	Sabine	67 min
May 3, 9:16 PM CDT	Tornado Warning	LCH	San Augustine	59 min
May 4, 2:06 AM CDT	Severe Thunderstorm Warning	LCH	Angelina, Tyler	69 min
May 4, 2:22 AM CDT	Severe Thunderstorm Warning	LCH	Jasper, Newton	68 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.