Alert archive / Illinois / Tornado Warnings in 1998

Tornado Warning 62, NWS St. Louis, MO

June 12, 1998Fayette County, Marion County, Illinois

NWS St. Louis, MO issued this tornado warning at Jun 12, 1998, 5:47 PM CDT for Fayette County, Marion County, Illinois. 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
Jun 12, 1998, 5:47 PM CDT (22:47 UTC)
Expired
Jun 12, 1998, 6:35 PM CDT
In force
48 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Fayette County, IL, Marion County, IL

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 12, 4:30 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 151 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, Lincoln, IL at 12:00Z on 1998-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 538 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, Lincoln, IL at 12:00Z on 1998-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
538 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 122247 RRA
TORSTL
ILC051-121-122335-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
547 PM CDT FRI JUN 12 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  FAYETTE COUNTY IN SOUTHWESTERN ILLINOIS
  MARION COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS

* UNTIL 635 PM CDT

* AT 545 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO JUST SOUTHWEST OF MULBERRY GROVE... MOVING EAST-SOUTHEAST
  AT 35 MPH.

* LOCATIONS IN THE PATH...
  VANDALIA
  PITTSBURG
  VERNON
  PATOKA
  SHOBONIER

THIS IS A DANGEROUS SITUATION! IF IN THE PATH...TAKE COVER NOW!
MOVE TO A BASEMENT IF AVAILABLE. IF NOT...STAY ON THE LOWEST LEVEL
AND GO TO A SMALL INTERIOR ROOM. MOBILE HOMES AND AUTOMOBILESHOULD
BE ABANDONED IN FAVOR OF A STRONG STRUCTURE. AS A LAST RESORT...
MOVE TO A DITCH OR CULVERT AND COVER YOUR HEAD.

TRUETT/METZE

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 3:58 PM CDTSevere Thunderstorm WarningLSXCalhoun47 min
Jun 12, 3:58 PM CDTSevere Thunderstorm WarningLSXGreene, Jersey47 min
Jun 12, 4:42 PM CDTTornado WarningLSXMacoupin48 min
Jun 12, 5:04 PM CDTTornado WarningLSXCalhoun51 min
Jun 12, 5:09 PM CDTTornado WarningLSXBond, Madison51 min
Jun 12, 5:12 PM CDTSevere Thunderstorm WarningLSXMontgomery63 min
Jun 12, 5:42 PM CDTTornado WarningLSXMadison48 min
Jun 12, 6:00 PM CDTTornado WarningLSXMonroe, Randolph65 min
Jun 12, 6:18 PM CDTTornado WarningLSXClinton, Saint Clair47 min
Jun 12, 6:36 PM CDTTornado WarningLSXMarion34 min

Nearby

Tornado Warnings in Illinois, 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.