Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 451, NWS Jackson, MS

July 6, 1998Marion County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 6, 1998, 3:37 PM CDT for Marion County, Mississippi. 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
Jul 6, 1998, 3:37 PM CDT (20:37 UTC)
Expired
Jul 6, 1998, 4:25 PM CDT
In force
48 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Marion County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.6 hours before the alert went out and 110 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, Slidell Radar S, LA at 12:00Z on 1998-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1507 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, Slidell Radar S, LA at 12:00Z on 1998-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1507 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1049 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
44 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.

687 
WUUS1 KJAN 062036 RRA
SVRJAN
MSC091-062125-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
337 PM CDT MON JUL 6 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN SOUTH CENTRAL MISSISSIPPI

* UNTIL 425 PM CDT

* AT 336 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES
  NORTHWEST OF COLUMBIA MOVING SOUTH AT 10 MPH.

* THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM...
  COLUMBIA                    BY 345 PM CDT

THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS.

75

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 6, 10:00 AM CDT, 5 hours 37 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-
072>074-070400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1000 AM CDT MON JUL 6 1998

AFTERNOON AND EVENING THUNDERSTORMS WILL BE WIDELY SCATTERED ACROSS THE
AREA. A FEW THUNDERSTORMS WILL PRODUCE GUSTY WINDS BUT NO ORGANIZED
SEVERE ACTIVITY IS EXPECTED.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY
MANAGEMENT PERSONNEL WILL NOT BE REQUIRED^ THROUGH TONIGHT.

FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET WEB SITE AT:

     HTTP://WWW.JANNWS.STATE.MS.US        (IN LOWER CASE LETTERS)
Special weather statement, Jul 6, 10:00 AM CDT, 5 hours 37 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032>066-
072>074-070400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1000 AM CDT MON JUL 6 1998

AFTERNOON AND EVENING THUNDERSTORMS WILL BE WIDELY SCATTERED ACROSS THE
AREA. A FEW THUNDERSTORMS WILL PRODUCE GUSTY WINDS BUT NO ORGANIZED
SEVERE ACTIVITY IS EXPECTED.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY
MANAGEMENT PERSONNEL WILL NOT BE REQUIRED^ THROUGH TONIGHT.

FOR MORE WEATHER INFORMATION PLEASE VISIT OUR INTERNET WEB SITE AT:

     HTTP://WWW.JANNWS.STATE.MS.US        (IN LOWER CASE LETTERS)

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.