Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 124, NWS New Orleans, LA

April 17, 1998Pike County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 17, 1998, 5:00 PM CDT for Pike County, Mississippi. It was in force for 65 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 17, 1998, 5:00 PM CDT (22:00 UTC)
Expired
Apr 17, 1998, 6:05 PM CDT
In force
65 min
Issued by
NWS New Orleans, LA
Area
Whole counties

County Pike County, MS

What was reported inside it

TimeReportWhereRemark
Apr 17, 5:25 PM CDTThunderstorm WindOsyka, MS
Apr 17, 5:25 PM CDTThunderstorm WindOsyka, MS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.0 hours before the alert went out and 123 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 1998-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1365 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 1998-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
1365 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

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
Apr 17, 5:00 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena65 min
Apr 17, 5:13 PM CDTSevere Thunderstorm WarningLIXTangipahoa47 min
Apr 17, 5:36 PM CDTSevere Thunderstorm WarningLIXWashington49 min
Apr 17, 5:59 PM CDTSevere Thunderstorm WarningLIXTangipahoa31 min
Apr 17, 6:23 PM CDTSevere Thunderstorm WarningLIXWashington32 min
Apr 17, 6:52 PM CDTSevere Thunderstorm WarningLIXTangipahoa33 min
Apr 17, 5:30 PM CDTSevere Thunderstorm WarningLIXWalthall65 min
Apr 17, 5:33 PM CDTTornado WarningLIXWalthall62 min
Apr 17, 6:04 PM CDTTornado WarningLIXPearl River31 min
Apr 17, 6:33 PM CDTSevere Thunderstorm WarningLIXPearl River47 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.