Alert archive / Mississippi / Tornado Warnings in 1998

Tornado Warning 12, NWS Mobile, AL

April 17, 1998Greene County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 17, 1998, 6:09 PM CDT for Greene County, Mississippi. It was in force for 61 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 17, 1998, 6:09 PM CDT (23:09 UTC)
Expired
Apr 17, 1998, 7:10 PM CDT
In force
61 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Greene County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 17, 5:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.2 hours before the alert went out and 148 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 1998-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1365 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 1998-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939587897Sfc1 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
1365 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

692 
WFUS1 KMOB 172311 RRA
TORMOB
MSC041-180010-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
609 PM CDT FRI APR 17 1998

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  GREENE COUNTY IN SOUTHEASTERN MISSISSIPPI

* UNTIL 710 PM CDT

* AT 606 PM CDT... A TORNADO WAS LOCATED 4 MILES NORTHWEST OF
  LEAKESVILLE... AS INDICATED BY DOPPLER RADAR... MOVING NORTHEAST 45
  MPH.

* TORNADO WILL BE NEAR-
  LEAKESVILLE BY 620 PM CDT
  WASHINGTON AL/GREENE MS BORDER BY 630 PM CDT

IF YOU ARE IN THE PATH OF A TORNADO...SEEK SAFETY IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR
CUSHIONS TO COVER YOUR BODY. STAY AWAY FROM WINDOWS.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 17, 4:46 PM CDTSevere Thunderstorm WarningMOBPerry69 min
Apr 17, 5:05 PM CDTSevere Thunderstorm WarningMOBGreene60 min
Apr 17, 5:14 PM CDTTornado WarningMOBGreene, Perry61 min
Apr 17, 6:41 PM CDTTornado WarningMOBPerry49 min

Nearby

Tornado Warnings in Mississippi, 1998Every tornado warning in 1998Tornadoes 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.