Alert archive / Louisiana / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 115, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Jun 20, 2004, 4:55 PM CDT for Terrebonne Parish, Louisiana. It was in force for 35 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 20, 2004, 4:55 PM CDT (21:55 UTC)
- Expired
- Jun 20, 2004, 5:30 PM CDT
- In force
- 35 min
- Issued by
- NWS New Orleans, LA
- Area
- Counties, with a storm outline in the text
County Terrebonne Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 9.9 hours before the alert went out and 150 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
- 1136 J/kg
- Mixed-layer CIN
- -120 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 20, 3:50 PM CDT, 1 hour 5 minutes earlier.
Area forecast discussion, Jun 20, 3:50 PM CDT, 1 hour 5 minutes before
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Special weather statement, Jun 20, 4:28 PM CDT, 27 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 |
|---|---|---|---|---|
| Jun 19, 11:50 PM CDT | Flash Flood Warning | LIX | West Feliciana | 85 min |
| Jun 20, 1:27 AM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa | 63 min |
| Jun 20, 2:03 AM CDT | Special Marine Warning | LIX | 57 min | |
| Jun 20, 2:30 AM CDT | Special Marine Warning | LIX | 2 hr | |
| Jun 19, 10:55 PM CDT | Severe Thunderstorm Warning | LIX | Wilkinson | 35 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2004Every severe thunderstorm warning in 2004
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.