Alert archive / Louisiana / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 80
The Storm Prediction Center issued this severe thunderstorm watch at Mar 6, 1998, 1:20 PM CST for 30 parishes in Louisiana; 6 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 6, 1998, 1:20 PM CST (19:20 UTC)
- Expired
- Mar 6, 1998, 6:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Acadia Parish, LA, Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Lafayette Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Stone County, MS
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 1:22 PM CST | Tornado Warning | LCH | Vermilion | 63 min |
| Mar 6, 1:23 PM CST | Severe Thunderstorm Warning | LIX | Jefferson | 32 min |
| Mar 6, 1:46 PM CST | Severe Thunderstorm Warning | LIX | Lafourche | 64 min |
| Mar 6, 1:59 PM CST | Tornado Warning | LIX | Jefferson | 16 min |
| Mar 6, 2:09 PM CST | Severe Thunderstorm Warning | LIX | Hancock | 36 min |
| Mar 6, 2:16 PM CST | Tornado Warning | LIX | Jefferson, Orleans, Saint Bernard | 34 min |
| Mar 6, 2:21 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 64 min |
| Mar 6, 2:30 PM CST | Severe Thunderstorm Warning | LIX | Plaquemines | 60 min |
| Mar 6, 3:00 PM CST | Severe Thunderstorm Warning | MOB | Stone | 65 min |
| Mar 6, 3:06 PM CST | Severe Thunderstorm Warning | LIX | Harrison | 34 min |
| Mar 6, 3:35 PM CST | Severe Thunderstorm Warning | LIX | Jackson | 60 min |
| Mar 6, 3:46 PM CST | Severe Thunderstorm Warning | LIX | Lafourche, Terrebonne | 34 min |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.3 hours before the alert went out and 117 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
- 451 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 6:45 PM CST | Severe Thunderstorm Watch | SPC | Bienville, Caldwell, Claiborne, East Carroll, Franklin, Jackson and 8 more | 3 hr |
| Mar 5, 10:15 PM CST | Severe Thunderstorm Watch | SPC | Saint Helena, Tensas, Washington | 5 hr |
Nearby
Severe Thunderstorm Watches in Louisiana, 1998Severe Thunderstorm Watches in Mississippi, 1998Every severe thunderstorm watch in 1998
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.