Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 149, NWS Jackson, MS

April 8, 1998Rankin County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 8, 1998, 8:00 PM CDT for Rankin County, Mississippi. It was in force for 45 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 8, 1998, 8:00 PM CDT (01:00 UTC)
Expired: Apr 8, 1998, 8:45 PM CDT
In force: 45 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Rankin County, MS

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 8, 2:00 PM CDT	Tornado Watch	SPC	6 hr
Apr 8, 7:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.0 hours before the alert went out and 14 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2202 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 090100 RRA
SVRJAN
MSC121-090145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
800 PM CDT WED APR 8 1998
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MISSISSIPPI
 
   ...RANKIN COUNTY
 
AT 758 PM...RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN FLORENCE AND
STAR. IT WAS MOVING TO THE NORTHEAST ABOUT 40 MPH. THE STORM WILL MOVE
THROUGH THE THOMASVILLE AND JOHNS AREAS BY 820 PM. ANOTHER SEVERE STORM
IS MOVING FROM NORTHEAST RANKIN COUNTY INTO SCOTT COUNTY AT THIS TIME.
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSvTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.  REMAIN
CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
<
 
 
68

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 7:09 PM CDT	Tornado Warning	JAN	Hinds, Rankin	51 min
Apr 8, 7:24 PM CDT	Severe Thunderstorm Warning	JAN	Leake	66 min
Apr 8, 7:31 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	44 min
Apr 8, 7:45 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	45 min
Apr 8, 7:49 PM CDT	Tornado Warning	JAN	Scott	41 min
Apr 8, 8:16 PM CDT	Severe Thunderstorm Warning	JAN	Winston	44 min
Apr 8, 8:44 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	46 min
Apr 8, 8:51 PM CDT	Severe Thunderstorm Warning	JAN	Newton	39 min
Apr 8, 9:02 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	43 min
Apr 8, 9:27 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	48 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1998 Every 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.