Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 596, NWS Jackson, MS

August 24, 1999Carroll County, Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 24, 1999, 6:10 PM CDT for Carroll County, Leflore County, Mississippi. It was in force for 50 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
Aug 24, 1999, 6:10 PM CDT (23:10 UTC)
Expired
Aug 24, 1999, 7:00 PM CDT
In force
50 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Carroll County, MS, Leflore County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.2 hours before the alert went out and 131 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 1999-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2943 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, Jackson, MS at 12:00Z on 1999-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 square meters per square second.1939Sfc1 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
2943 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
-23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KJAN 242312 RRA
SVRJAN
MSC015-083-250000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
610 PM CDT TUE AUG 24 1999

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI
  LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI

* UNTIL 700 PM CDT

* AT 608 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM IN THE
  VICINITY OF GREENWOOD...: MOVING EAST AT 15 MPH.

THIS STORM HAS A HISTORY OF LARGE HAIL...UP TO GOLF BALL SIZE HAIL.
GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS!

82


&

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 24, 5:04 PM CDTSevere Thunderstorm WarningJANSunflower36 min
Aug 24, 5:20 PM CDTSevere Thunderstorm WarningJANWarren35 min
Aug 24, 5:35 PM CDTSevere Thunderstorm WarningJANLeflore35 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.