Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 5, NWS New Orleans, LA

January 12, 1998Pointe Coupee Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 12, 1998, 4:46 AM CST for Pointe Coupee Parish, Louisiana. It was in force for 74 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
Jan 12, 1998, 4:46 AM CST (10:46 UTC)
Expired
Jan 12, 1998, 6:00 AM CST
In force
74 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Pointe Coupee Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.8 hours before the alert went out and 167 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 1998-01-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 1998-01-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
16 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 12, 2:43 AM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana62 min
Jan 12, 6:33 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Livingston62 min
Jan 12, 7:12 AM CSTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa63 min
Jan 12, 7:41 AM CSTSevere Thunderstorm WarningLIXTangipahoa119 min
Jan 12, 8:03 AM CSTFlash Flood WarningLIXSaint Tammany, Tangipahoa3 hr
Jan 12, 8:46 AM CSTSevere Thunderstorm WarningLIXSaint Tammany59 min
Jan 12, 10:50 AM CSTTornado WarningLIXOrleans35 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1998Every severe thunderstorm warning 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.