Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 271, NWS Jackson, MS

April 5, 1999Hinds County, Madison County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 5, 1999, 8:34 PM CDT for Hinds County, Madison 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
Apr 5, 1999, 8:34 PM CDT (01:34 UTC)
Expired
Apr 5, 1999, 9:20 PM CDT
In force
46 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Hinds County, MS, Madison County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 5, 8:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.6 hours before the alert went out and 266 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, Little Rock, AR at 00:00Z on 1999-04-06Temperature 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, Little Rock, AR at 00:00Z on 1999-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.19395878Sfc1 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
1399 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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 Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 5, 7:07 PM CDTSevere Thunderstorm WarningJANHumphreys, Yazoo48 min
Apr 5, 7:15 PM CDTSevere Thunderstorm WarningJANWarren35 min
Apr 5, 9:32 PM CDTSevere Thunderstorm WarningJANSunflower33 min
Apr 5, 11:30 PM CDTSevere Thunderstorm WarningJANGrenada50 min
Apr 5, 11:46 PM CDTSevere Thunderstorm WarningJANClaiborne, Warren49 min
Apr 6, 12:34 AM CDTSevere Thunderstorm WarningJANClaiborne, Warren51 min
Apr 6, 1:52 AM CDTSevere Thunderstorm WarningJANCopiah48 min
Apr 6, 2:41 AM CDTSevere Thunderstorm WarningJANCopiah34 min
Apr 5, 9:30 PM CDTSevere Thunderstorm WarningJANFranklin, Richland50 min
Apr 5, 10:08 PM CDTSevere Thunderstorm WarningJANMorehouse, West Carroll32 min
Apr 5, 10:12 PM CDTSevere Thunderstorm WarningJANFranklin33 min
Apr 5, 10:32 PM CDTSevere Thunderstorm WarningJANMadison, Tensas48 min
Apr 5, 10:48 PM CDTSevere Thunderstorm WarningJANFranklin32 min
Apr 5, 11:19 PM CDTSevere Thunderstorm WarningJANMadison, Tensas46 min
Apr 6, 12:02 AM CDTSevere Thunderstorm WarningJANTensas33 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1999Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.