Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 261, NWS Jackson, MS

April 3, 1999Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Apr 3, 1999, 7:47 PM CST for Ashley County, Chicot County, Arkansas. It was in force for 48 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 3, 1999, 7:47 PM CST (01:47 UTC)
Expired
Apr 3, 1999, 8:35 PM CST
In force
48 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Ashley County, AR, Chicot County, AR

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 3, 4:00 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.8 hours before the alert went out and 223 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, Shreveport, LA at 00:00Z on 1999-04-04Temperature 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, Shreveport, LA at 00:00Z on 1999-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -229 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
669 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-229 m²/s²
0-3 km storm-relative helicity
-122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 3, 8:22 PM CSTSevere Thunderstorm WarningJANBolivar, Sunflower, Washington48 min
Apr 3, 8:29 PM CSTSevere Thunderstorm WarningJANIssaquena46 min
Apr 3, 8:40 PM CSTSevere Thunderstorm WarningJANSharkey50 min
Apr 3, 7:29 PM CSTSevere Thunderstorm WarningJANMorehouse46 min
Apr 3, 8:10 PM CSTSevere Thunderstorm WarningJANWest Carroll45 min
Apr 3, 8:22 PM CSTSevere Thunderstorm WarningJANEast Carroll48 min
Apr 3, 7:04 PM CSTSevere Thunderstorm WarningJANAshley46 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 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.