Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 12, NWS New Orleans, LA

January 12, 1998Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 12, 1998, 9:54 AM CST for Jackson County, Mississippi. It was in force for 46 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, 9:54 AM CST (15:54 UTC)
Expired
Jan 12, 1998, 10:40 AM CST
In force
46 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Jackson County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 15:56 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.9 hours before the alert went out and 106 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, Slidell Radar S, LA at 12:00Z on 1998-01-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 265 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, Slidell Radar S, LA at 12:00Z on 1998-01-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 411 square meters per square second.1939587897Sfc1 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
265 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
499 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
411 m²/s²
0-3 km storm-relative helicity
492 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

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, 4:46 AM CSTSevere Thunderstorm WarningLIXPointe Coupee74 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
Jan 12, 9:20 AM CSTSevere Thunderstorm WarningLIXHancock65 min
Jan 12, 9:37 AM CSTSevere Thunderstorm WarningLIXHarrison63 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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; radar from the NEXRAD Level II archive.