Alert archive / Illinois / Tornado Warnings in 1998

Tornado Warning 128, NWS Lincoln, IL

October 29, 1998Cass County, Menard County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 29, 1998, 2:13 PM CST for Cass County, Menard County, Illinois. It was in force for 47 min. 2 reports 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
Oct 29, 1998, 2:13 PM CST (20:13 UTC)
Expired
Oct 29, 1998, 3:00 PM CST
In force
47 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Cass County, IL, Menard County, IL

The radar

The Lincoln radar (KILX), 61 km from the middle of the area, began a volume at 20:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Oct 29, 2:35 PM CSTThunderstorm Wind 52Petersburg, IL
Oct 29, 2:56 PM CSTHail 0.75Athens, IL

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

Lincoln, IL (KILX), launched 12:00Z, 8.2 hours before the alert went out and 122 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 1998-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
203 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 KSPI 292014
TORSPI
ILC017-129-292100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
213 PM CST THU OCT 29 1998

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CASS COUNTY IN CENTRAL ILLINOIS
  MENARD COUNTY IN CENTRAL ILLINOIS

* UNTIL 300 PM CST

* AT 210 PM CST... LINCOLN DOPPLER RADAR INDICATED A POSSIBLE TORNADO
  NEAR PHILADELPHIA OR 27 MILES WEST-NORTHWEST OF SPRINGFIELD...
  MOVING EAST-NORTHEAST AT 35 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  PHILADELPHIA
  TALLULA
  PETERSBURG
  ATHENS

IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IN A BASEMENT OR
INTERIOR ROOM ON THE LOWEST FLOOR. VEHICLES AND MFOBILE HOMES SHOULD
BE ABANDONED FOR A SAFER SHELTER.

UTHLAUT

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 29, 1:18 PM CSTSevere Thunderstorm WarningILXCass42 min
Oct 29, 1:55 PM CSTSevere Thunderstorm WarningILXCass50 min
Oct 29, 3:00 PM CSTSevere Thunderstorm WarningILXLogan, Menard60 min
Oct 29, 4:54 PM CSTSevere Thunderstorm WarningILXMoultrie51 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.