Alert archive / Louisiana / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 12, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 22, 2013, 1:55 PM CST for Jefferson Parish, Plaquemines Parish, Louisiana. It was in force for 50 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
- Feb 22, 2013, 1:55 PM CST (19:55 UTC)
- Expired
- Feb 22, 2013, 2:45 PM CST
- In force
- 50 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Jefferson Parish, LA, Plaquemines Parish, LA
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.9 hours before the alert went out and 301 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1491 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- -154 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Feb 22, 8:45 AM CST, 5 hours 10 minutes earlier.
Area forecast discussion, Feb 22, 8:45 AM CST, 5 hours 10 minutes before
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Special weather statement, Feb 22, 12:55 PM CST, 1 hour before
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</html>Special weather statement, Feb 22, 1:41 PM CST, 14 minutes before
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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 7:55 PM CST | River Flood Warning | LIX | St. Mary | 39 hr |
| Feb 22, 2:38 AM CST | Special Marine Warning | LIX | 52 min | |
| Feb 22, 3:32 AM CST | Special Marine Warning | LIX | 58 min | |
| Feb 22, 1:21 PM CST | Special Marine Warning | LIX | 54 min | |
| Feb 22, 1:53 PM CST | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Plaquemines | 67 min |
| Feb 21, 9:14 PM CST | Tornado Warning | LIX | Amite, Pike | 31 min |
| Feb 22, 12:59 PM CST | River Flood Warning | LIX | Pike, Walthall | 21 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2013Every severe thunderstorm warning in 2013
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.