Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 192, NWS Memphis, TN

May 7, 1998Lee County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at May 7, 1998, 9:01 PM CDT for Lee County, Mississippi. It was in force for 34 min. 1 report 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
May 7, 1998, 9:01 PM CDT (02:01 UTC)
Expired
May 7, 1998, 9:35 PM CDT
In force
34 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Lee County, MS

What was reported inside it

TimeReportWhereRemark
May 7, 9:15 PM CDTHail 0.75Verona, 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

Birmingham, AL (KBMX), launched 00:00Z, 2.0 hours before the alert went out and 215 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, Birmingham, AL at 00:00Z on 1998-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2677 joules per kilogram.LCLEL10008507005003002001001 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, Birmingham, AL at 00:00Z on 1998-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.1939587897117136Sfc1 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
2677 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
985 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
3.5
Supercell composite
12.4

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 Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 9:19 PM CDTSevere Thunderstorm WarningMEGMonroe46 min
May 7, 9:27 PM CDTSevere Thunderstorm WarningMEGItawamba18 min
May 7, 9:45 PM CDTSevere Thunderstorm WarningMEGTallahatchie35 min
May 7, 9:59 PM CDTSevere Thunderstorm WarningMEGYalobusha31 min
May 7, 10:29 PM CDTSevere Thunderstorm WarningMEGLafayette36 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.