Alert archive / Illinois / Tornado Warnings in 1992

Tornado Warning 9, NWS Lincoln, IL

May 4, 1992McLean County, Illinois

NWS Lincoln, IL issued this tornado warning at May 4, 1992, 4:41 PM CDT for McLean County, Illinois. It was in force for 64 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: May 4, 1992, 4:41 PM CDT (21:41 UTC)
Expired: May 4, 1992, 5:45 PM CDT
In force: 64 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County McLean County, IL

What was reported inside it

Time	Report	Where	Remark
May 4, 4:42 PM CDT	Tornado F0	Mclean, IL
May 4, 4:50 PM CDT	Tornado F0	Mclean, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.7 hours before the alert went out and 381 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2350 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 216 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 KPIA 042141
TORPIA
ILC113-042245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE PEORIA IL
441 PM CDT MON MAY 4 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE CENTRAL PART OF ILLINOIS
      MCLEAN

AT 4:37 PM CDT A TORNADO WAS REPORTED NEAR GRIDLEY IN THE NORTHWEST
CORNER OF MCLEAN COUNTY.  THE TORNADO WAS MOVING SOUTHEAST AT 30
MPH.

TOWNS IN THE PATH OF THE TORNADO INCLUDE CLARKSVILLE... LEXINGTON..
AND PLEASANT HILL.

IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER
IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR.  ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.

ATTN ISP 6

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 2:25 PM CDT	Tornado Warning	ILX	Fulton, Mason, Tazewell	35 min
May 4, 2:52 PM CDT	Tornado Warning	ILX	Champaign	38 min
May 4, 3:07 PM CDT	Tornado Warning	ILX	McLean, Tazewell	33 min

Nearby

Tornado Warnings in Illinois, 1992 Every tornado warning in 1992 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.