Alert archive / Louisiana / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 63, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 7, 2003, 3:05 PM CDT for Assumption Parish, Lafourche Parish, Terrebonne Parish, Louisiana. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2003, 3:05 PM CDT (20:05 UTC)
- Expired
- Apr 7, 2003, 4:00 PM CDT
- In force
- 55 min
- Issued by
- NWS New Orleans, LA
- Area
- Counties, with a storm outline in the text
Counties Assumption Parish, LA, Lafourche Parish, LA, Terrebonne Parish, LA
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 7, 10:05 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.1 hours before the alert went out and 147 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
- 1394 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 212 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.4
The text
As transmitted, in the capitals the NWS used until 2016.
637 WUUS54 KLIX 072005 SVRNEW LAC007-057-109-072100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 303 PM CDT MON APR 7 2003 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN ASSUMPTION PARISH IN SOUTHEAST LOUISIANA UPPER LAFOURCHE PARISH IN SOUTHEAST LOUISIANA THIS INCLUDES THE CITY OF THIBODAUX NORTHERN TERREBONNE PARISH IN SOUTHEAST LOUISIANA * UNTIL 400 PM CDT * AT 300 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF MORGAN CITY MOVING EAST AT 30 MPH. THIS STORM WILL AFFECT THE COMMUNITIES OF THIBODAUX...HOUMA AND LABADIEVILLE. THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM WINDOWS. THIS IS A DANGEROUS STORM WITH DAMAGING WINDS...STAY INDOORS AWAY FROM WINDOWS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 2982 9141 2964 9141 2960 9066 2987 9066 $$
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 9:23 AM CDT | Severe Thunderstorm Warning | LIX | Washington | 37 min |
| Apr 7, 9:56 AM CDT | Severe Thunderstorm Warning | LIX | Washington | 49 min |
| Apr 7, 12:31 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston | 44 min |
| Apr 7, 12:56 PM CDT | Severe Thunderstorm Warning | LIX | Assumption, Iberville | 49 min |
| Apr 7, 1:10 PM CDT | Severe Thunderstorm Warning | LIX | Livingston | 50 min |
| Apr 7, 1:23 PM CDT | Tornado Warning | LIX | Ascension, Assumption, Iberville, Saint James | 37 min |
| Apr 7, 1:34 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa | 41 min |
| Apr 7, 1:44 PM CDT | Tornado Warning | LIX | Saint Tammany, Tangipahoa | 31 min |
| Apr 7, 1:57 PM CDT | Tornado Warning | LIX | Ascension, Livingston | 33 min |
| Apr 7, 2:00 PM CDT | Special Marine Warning | LIX | 2 hr | |
| Apr 7, 2:12 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 48 min |
| Apr 7, 2:54 PM CDT | Special Marine Warning | LIX | 66 min | |
| Apr 7, 2:57 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 33 min |
| Apr 7, 3:30 PM CDT | Tornado Warning | LIX | Assumption | 30 min |
| Apr 7, 3:55 PM CDT | Severe Thunderstorm Warning | LIX | Lafourche, Saint James, Saint John the Baptist | 65 min |
| Apr 7, 4:09 PM CDT | Special Marine Warning | LIX | 96 min | |
| Apr 7, 4:35 PM CDT | Severe Thunderstorm Warning | LIX | Saint Charles | 40 min |
| Apr 7, 4:48 PM CDT | Severe Thunderstorm Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 57 min |
| Apr 7, 4:52 PM CDT | Severe Thunderstorm Warning | LIX | Assumption, Iberville | 38 min |
| Apr 7, 5:40 PM CDT | Special Marine Warning | LIX | 65 min | |
| Apr 7, 6:40 PM CDT | Special Marine Warning | LIX | 65 min | |
| Apr 7, 6:40 PM CDT | Special Marine Warning | LIX | 65 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2003Every severe thunderstorm warning in 2003
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.