Alert archive / Illinois / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 92, NWS Lincoln, IL

August 26, 1992Champaign County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 26, 1992, 2:48 PM CDT for Champaign County, Illinois. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Aug 26, 1992, 2:48 PM CDT (19:48 UTC)
Expired
Aug 26, 1992, 3:30 PM CDT
In force
42 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Champaign County, IL

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 7.8 hours before the alert went out and 342 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, Dayton/James M C, OH at 12:00Z on 1992-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 556 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, Dayton/James M C, OH at 12:00Z on 1992-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
556 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
47 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 261948
SVRSPI
ILC019-262030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SPRINGFIELD IL
248 PM CDT WED AUG 26 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE EAST CENTRAL PART OF ILLINOIS
      NORTHERN CHAMPAIGN

STATE POLICE REPORT GOLFBALL SIZE HAIL NEAR MAHOMET..10 MILES
NORTHWEST OF CHAMPAIGN. THE STORM IS MOVING TO THE EAST
AT 20 TO 5 MPH.

THE FOLLOWING TOWNS ARE IN THE PATH OF THIS STORM...
CHAMPAIGN AND RANTOUL

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND DANGEROUS LIGHTNING.

 ATTN ISP DIST...10
 FENLEY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 3:33 PM CDTTornado WarningILXMcLean27 min
Aug 26, 4:58 PM CDTSevere Thunderstorm WarningILXSangamon62 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1992Every severe thunderstorm warning in 1992

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.