Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 459, NWS Jackson, MS

July 9, 1998Carroll County, Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 9, 1998, 6:49 PM CDT for Carroll County, Leflore County, Mississippi. It was in force for 36 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
Jul 9, 1998, 6:49 PM CDT (23:49 UTC)
Expired
Jul 9, 1998, 7:25 PM CDT
In force
36 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Carroll County, MS, Leflore County, MS

What was reported inside it

TimeReportWhereRemark
Jul 9, 7:10 PM CDTThunderstorm WindGreenwood, MSSeveral trees were blown down.

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 nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.8 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 1998-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 837 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 1998-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
837 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
1067 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
51 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 092349 RRA
SVRJAN
MSC015-083-100025-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
649 PM CDT THU JUL 9 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 725 PM CDT

* AT 649 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM IN THE
  VICINITY OF GREENWOOD MOVING SOUTH AT 10 MPH.

* THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM...
  SIDON                       BY 715 PM CDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

67
t

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 3:10 PM CDTSevere Thunderstorm WarningJANOktibbeha50 min
Jul 9, 5:00 PM CDTSevere Thunderstorm WarningJANCarroll, Grenada, Montgomery35 min
Jul 9, 5:08 PM CDTSevere Thunderstorm WarningJANKemper32 min
Jul 9, 5:33 PM CDTSevere Thunderstorm WarningJANCarroll, Montgomery32 min
Jul 9, 5:38 PM CDTSevere Thunderstorm WarningJANLauderdale32 min
Jul 9, 5:56 PM CDTSevere Thunderstorm WarningJANAttala, Choctaw34 min
Jul 9, 6:04 PM CDTSevere Thunderstorm WarningJANCarroll, Leflore46 min
Jul 9, 6:52 PM CDTSevere Thunderstorm WarningJANAttala33 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.