Alert archive / Louisiana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 61, NWS New Orleans, LA

June 4, 2018Livingston Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 4, 2018, 7:32 PM CDT for Livingston Parish, Louisiana. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 4, 2018, 7:32 PM CDT (00:32 UTC)
Expired: Jun 4, 2018, 8:00 PM CDT
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Livingston Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.5 hours before the alert went out and 240 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: 2550 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1175 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: -0.3
Supercell composite: -3.0

Open this sounding in Storm Lab

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.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 4:08 PM CDT, 3 hours 24 minutes earlier.

Area forecast discussion, Jun 4, 4:08 PM CDT, 3 hours 24 minutes before

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Hazardous weather outlook, Jun 4, 4:20 PM CDT, 3 hours 12 minutes before

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In the hours before

Special weather statement, Jun 4, 4:43 PM CDT, 2 hours 49 minutes before

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Special weather statement, Jun 4, 4:47 PM CDT, 2 hours 45 minutes before

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Special weather statement, Jun 4, 5:19 PM CDT, 2 hours 13 minutes before

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Special weather statement, Jun 4, 5:47 PM CDT, 1 hour 45 minutes before

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Special weather statement, Jun 4, 6:20 PM CDT, 1 hour 12 minutes before

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Special weather statement, Jun 4, 7:21 PM CDT, 11 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
Jun 4, 7:21 PM CDT	Special Weather Statement	LIX	Livingston	24 min
Jun 5, 7:11 AM CDT	Special Weather Statement	LIX	Washington	49 min
Jun 5, 9:43 AM CDT	Special Marine Warning	LIX		47 min
Jun 5, 10:18 AM CDT	Special Marine Warning	LIX		57 min
Jun 5, 11:07 AM CDT	Special Marine Warning	LIX		53 min
Jun 5, 11:11 AM CDT	Special Marine Warning	LIX		26 min
Jun 5, 12:05 PM CDT	Special Marine Warning	LIX		55 min
Jun 5, 12:13 PM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	47 min
Jun 5, 12:34 PM CDT	Special Weather Statement	LIX	Livingston	41 min
Jun 5, 12:37 PM CDT	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	38 min
Jun 5, 12:42 PM CDT	Special Marine Warning	LIX		48 min
Jun 5, 12:50 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston, West Baton Rouge	25 min
Jun 5, 12:53 PM CDT	Special Weather Statement	LIX	Ascension	52 min
Jun 5, 1:05 PM CDT	Severe Thunderstorm Warning	LIX	Livingston, Tangipahoa	25 min
Jun 5, 1:18 PM CDT	Special Marine Warning	LIX		57 min
Jun 5, 1:23 PM CDT	Special Marine Warning	LIX		37 min
Jun 5, 1:26 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa	34 min
Jun 5, 1:28 PM CDT	Special Weather Statement	LIX	East Baton Rouge	47 min
Jun 5, 1:45 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston, Saint Helena, Tangipahoa	30 min
Jun 5, 1:48 PM CDT	Special Weather Statement	LIX	Saint Charles	42 min
Jun 5, 1:56 PM CDT	Special Weather Statement	LIX	Saint Charles	49 min
Jun 5, 2:13 PM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	17 min
Jun 5, 2:29 PM CDT	Special Weather Statement	LIX	Washington	46 min
Jun 5, 2:32 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Saint Charles	28 min
Jun 5, 2:41 PM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	75 min
Jun 5, 3:29 PM CDT	Special Weather Statement	LIX	Jefferson	46 min
Jun 5, 3:59 PM CDT	Special Marine Warning	LIX		61 min
Jun 5, 4:08 PM CDT	Special Marine Warning	LIX		67 min
Jun 5, 4:17 PM CDT	Special Marine Warning	LIX		58 min
Jun 5, 4:25 PM CDT	Special Marine Warning	LIX		65 min
Jun 5, 4:58 PM CDT	Special Marine Warning	LIX		62 min
Jun 5, 5:30 PM CDT	Special Marine Warning	LIX		45 min
Jun 5, 5:59 PM CDT	Special Marine Warning	LIX		46 min
Jun 5, 6:14 PM CDT	Special Marine Warning	LIX		61 min
Jun 5, 9:41 AM CDT	Special Weather Statement	LIX	Hancock	19 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2018 Every severe thunderstorm warning in 2018

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.