Alert archive / Louisiana / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 160, NWS New Orleans, LA

July 28, 2005Jefferson Parish, Orleans Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 28, 2005, 5:48 PM CDT for Jefferson Parish, Orleans Parish, Louisiana. It was in force for 27 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: Jul 28, 2005, 5:48 PM CDT (22:48 UTC)
Expired: Jul 28, 2005, 6:15 PM CDT
In force: 27 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Jefferson Parish, LA, Orleans Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.8 hours before the alert went out and 51 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: 1717 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 12 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 New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 3:23 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Jul 28, 3:23 PM CDT, 2 hours 25 minutes before

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Hazardous weather outlook, Jul 28, 1:45 PM CDT, 4 hours 3 minutes before

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In the hours before

Special weather statement, Jul 28, 3:10 PM CDT, 2 hours 38 minutes before

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Special weather statement, Jul 28, 3:19 PM CDT, 2 hours 29 minutes before

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Special weather statement, Jul 28, 3:40 PM CDT, 2 hours 8 minutes before

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Special weather statement, Jul 28, 4:48 PM CDT, 1 hour before

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Special weather statement, Jul 28, 5:18 PM CDT, 30 minutes before

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Local storm report, Jul 28, 5:44 PM CDT, 4 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
Jul 28, 2:22 PM CDT	Special Marine Warning	LIX		38 min
Jul 28, 2:32 PM CDT	Special Marine Warning	LIX		28 min
Jul 28, 2:57 PM CDT	Special Marine Warning	LIX		33 min
Jul 28, 4:23 PM CDT	Special Marine Warning	LIX		97 min
Jul 28, 4:43 PM CDT	Severe Thunderstorm Warning	LIX	Harrison	32 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2005 Every severe thunderstorm warning in 2005

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.