Alert archive / Louisiana / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 67, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 4, 2008, 7:35 PM CDT for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 24 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
- Apr 4, 2008, 7:35 PM CDT (00:35 UTC)
- Expired
- Apr 4, 2008, 7:59 PM CDT
- In force
- 24 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 4, 5:48 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.6 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.
- Mixed-layer CAPE
- 1152 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 931 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 2.5
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 Apr 4, 3:55 PM CDT, 3 hours 40 minutes earlier.
Area forecast discussion, Apr 4, 3:55 PM CDT, 3 hours 40 minutes before
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</html>Hazardous weather outlook, Apr 4, 6:05 PM CDT, 1 hour 30 minutes before
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Special weather statement, Apr 4, 6:57 PM CDT, 38 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 |
|---|---|---|---|---|
| Apr 5, 3:08 AM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Saint Charles | 67 min |
| Apr 5, 3:23 AM CDT | Special Marine Warning | LIX | 97 min | |
| Apr 5, 3:37 AM CDT | Severe Thunderstorm Warning | LIX | Saint Bernard | 38 min |
| Apr 5, 5:34 AM CDT | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 56 min |
| Apr 5, 6:52 AM CDT | Special Marine Warning | LIX | 83 min | |
| Apr 5, 6:59 AM CDT | Special Marine Warning | LIX | 91 min | |
| Apr 5, 7:49 AM CDT | Special Marine Warning | LIX | 86 min | |
| Apr 5, 8:57 AM CDT | Special Marine Warning | LIX | 93 min | |
| Apr 5, 9:01 AM CDT | Special Marine Warning | LIX | 89 min | |
| Apr 4, 8:11 PM CDT | Severe Thunderstorm Warning | LIX | Jackson | 39 min |
| Apr 5, 2:18 AM CDT | Flash Flood Warning | LIX | Hancock, Harrison | 6 hr |
| Apr 5, 2:47 AM CDT | River Flood Warning | LIX | Harrison | 52 hr |
| Apr 5, 5:02 AM CDT | Flash Flood Warning | LIX | Jackson | 4 hr |
| Apr 5, 7:18 AM CDT | River Flood Warning | LIX | Harrison | 34 hr |
| Apr 5, 7:18 AM CDT | River Flood Warning | LIX | Harrison | 27 hr |
| Apr 5, 12:16 PM CDT | River Flood Warning | LIX | Harrison | 9 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2008Every 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.