Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 249, NWS Jackson, MS

May 9, 1998Humphreys County, Sharkey County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 9, 1998, 9:41 PM CDT for Humphreys County, Sharkey County, Mississippi. It was in force for 49 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
May 9, 1998, 9:41 PM CDT (02:41 UTC)
Expired
May 9, 1998, 10:30 PM CDT
In force
49 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Humphreys County, MS, Sharkey County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
May 9, 7:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.7 hours before the alert went out and 94 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 00:00Z on 1998-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3361 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, Jackson, MS at 00:00Z on 1998-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939587897117Sfc1 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
3361 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
956 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
2.7
Supercell composite
8.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 100240 RRA
SVRJAN
MSC053-125-100330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
941 PM CDT SAT MAY 9 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI
  NORTHERN SHARKEY COUNTY IN WEST CENTRAL MISSISSIPPI

* UNTIL 1030 PM CDT

* AT 939 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES
  WEST OF BELZONI OR 10 MILES SOUTHWEST OF ISOLA MOVING EAST AT 40
  MPH.

* SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE...
  ISOLA                       BY 945 PM CDT
  BELZONI                     BY 955 PM CDT
  SILVER CITY                 BY 1000 PM CDT

G2O INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

64

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:05 PM CDTSevere Thunderstorm WarningJANNoxubee30 min
May 9, 7:09 PM CDTSevere Thunderstorm WarningJANNewton36 min
May 9, 7:15 PM CDTTornado WarningJANNoxubee35 min
May 9, 7:17 PM CDTTornado WarningJANNewton33 min
May 9, 7:36 PM CDTTornado WarningJANKemper, Lauderdale44 min
May 9, 9:12 PM CDTTornado WarningJANWashington48 min
May 9, 10:00 PM CDTSevere Thunderstorm WarningJANNeshoba50 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; the sounding from the Mesonet's radiosonde archive.