Alert archive / Louisiana / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 125, NWS Lake Charles, LA

June 24, 2008Acadia Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 24, 2008, 1:42 PM CDT for Acadia Parish, Vermilion Parish, Louisiana. It was in force for 33 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 24, 2008, 1:42 PM CDT (18:42 UTC)
Expired: Jun 24, 2008, 2:15 PM CDT
In force: 33 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Acadia Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 83 km from the middle of the area, began a volume at 18:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.7 hours before the alert went out and 257 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: 2560 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 24, 11:11 AM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, Jun 24, 11:11 AM CDT, 2 hours 31 minutes before

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Hazardous weather outlook, Jun 24, 5:13 AM CDT, 8 hours 29 minutes before

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In the hours before

Special weather statement, Jun 24, 12:00 PM CDT, 1 hour 42 minutes before

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Special weather statement, Jun 24, 1:28 PM CDT, 14 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
Jun 24, 2:12 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	33 min
Jun 24, 3:08 PM CDT	Special Marine Warning	LCH		36 min
Jun 24, 4:45 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	40 min
Jun 24, 5:20 PM CDT	Areal Flood Advisory	LCH	Rapides	3 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2008 Every severe thunderstorm warning in 2008

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; radar from the NEXRAD Level II archive.