Alert archive / Louisiana / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 66
The Storm Prediction Center issued this severe thunderstorm watch at Feb 26, 1998, 6:30 AM CST for 11 parishes in Louisiana; 9 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 26, 1998, 6:30 AM CST (12:30 UTC)
- Expired
- Feb 26, 1998, 12:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Jefferson Davis Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, Chambers County, TX, Galveston County, TX, Hardin County, TX, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX, Sabine County, TX, Tyler County, TX
The radar
The Lake Charles radar (KLCH), 56 km from the middle of the area, began a volume at 12:34 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 6:47 AM CST | Severe Thunderstorm Warning | LCH | Newton | 43 min |
| Feb 26, 6:57 AM CST | Severe Thunderstorm Warning | LCH | Jefferson | 58 min |
| Feb 26, 7:30 AM CST | Severe Thunderstorm Warning | LCH | Cameron | 60 min |
| Feb 26, 7:44 AM CST | Severe Thunderstorm Warning | LCH | Calcasieu | 46 min |
| Feb 26, 8:15 AM CST | Severe Thunderstorm Warning | LCH | Jefferson Davis | 60 min |
| Feb 26, 8:18 AM CST | Severe Thunderstorm Warning | LCH | Rapides | 62 min |
| Feb 26, 8:43 AM CST | Severe Thunderstorm Warning | LCH | Acadia, Evangeline, Saint Landry | 62 min |
| Feb 26, 9:06 AM CST | Tornado Warning | LCH | Avoyelles, Evangeline | 64 min |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.5 hours before the alert went out and 58 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
- 428 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 323 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.0
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 |
|---|---|---|---|---|
| Feb 26, 12:00 AM CST | Severe Thunderstorm Watch | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 8 more | 6 hr |
| Feb 26, 9:30 AM CST | Tornado Watch | SPC | Ascension, Assumption, Avoyelles, Catahoula, Concordia, East Baton Rouge and 28 more | 7 hr |
| Feb 26, 3:30 PM CST | Tornado Watch | SPC | Saint Tammany | 6 hr |
| Feb 25, 8:30 PM CST | Severe Thunderstorm Watch | SPC | Atascosa, Bastrop, Bexar, Blanco, Burleson, Caldwell and 19 more | 6 hr |
| Feb 25, 9:30 PM CST | Severe Thunderstorm Watch | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Dallas and 24 more | 6 hr |
| Feb 25, 9:30 PM CST | Tornado Watch | SPC | Atascosa, Austin, Bastrop, Bee, Bell, Bexar and 31 more | 6 hr |
| Feb 26, 5:45 PM CST | Severe Thunderstorm Watch | SPC | Bosque, Brown, Burnet, Comanche, Coryell, Edwards and 23 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Louisiana, 1998Severe Thunderstorm Watches in Texas, 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; radar from the NEXRAD Level II archive.