Alert archive / Mississippi / Tornado Warnings in 1999

Tornado Warning 118, NWS Jackson, MS

April 14, 1999Issaquena County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 14, 1999, 6:00 PM CDT for Issaquena County, Mississippi. It was in force for 35 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
Apr 14, 1999, 6:00 PM CDT (23:00 UTC)
Expired
Apr 14, 1999, 6:35 PM CDT
In force
35 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Issaquena County, MS

What was reported inside it

TimeReportWhereRemark
Apr 14, 6:05 PM CDTHail 0.75Fitler, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 14, 4:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.0 hours before the alert went out and 97 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, Jackson, MS at 12:00Z on 1999-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 12:00Z on 1999-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1238 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
238 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 5:52 PM CDTSevere Thunderstorm WarningJANIssaquena48 min
Apr 14, 6:05 PM CDTTornado WarningJANSharkey35 min
Apr 14, 6:32 PM CDTTornado WarningJANHumphreys48 min
Apr 14, 4:44 PM CDTSevere Thunderstorm WarningJANMorehouse, Richland31 min
Apr 14, 5:01 PM CDTSevere Thunderstorm WarningJANRichland34 min
Apr 14, 5:27 PM CDTSevere Thunderstorm WarningJANWest Carroll33 min
Apr 14, 5:36 PM CDTSevere Thunderstorm WarningJANEast Carroll, Madison34 min
Apr 14, 5:38 PM CDTTornado WarningJANWest Carroll32 min
Apr 14, 5:41 PM CDTTornado WarningJANEast Carroll34 min

Nearby

Tornado Warnings in Mississippi, 1999Every tornado warning in 1999Tornadoes in 1999

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.