Alert archive / Illinois / Tornado Warnings in 2001

Tornado Warning 1, NWS Lincoln, IL

April 6, 2001Marshall County, Peoria County, Stark County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 6, 2001, 11:32 AM CDT for Marshall County, Peoria County, Stark County, Illinois. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Apr 6, 2001, 11:32 AM CDT (16:32 UTC)
Expired: Apr 6, 2001, 12:15 PM CDT
In force: 43 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Marshall County, IL, Peoria County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 94 km from the middle of the area, began a volume at 16:31 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 4.5 hours before the alert went out and 90 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: 39 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 061633
TORSPI
ILC123-143-175-061715-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1132 AM CDT FRI APR 6 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  MARSHALL COUNTY IN CENTRAL ILLINOIS
  PEORIA COUNTY IN CENTRAL ILLINOIS
  STARK COUNTY IN NORTH CENTRAL ILLINOIS

* UNTIL 1215 PM CDT

* AT 1132 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER TOULON...OR ABOUT 14 MILES SOUTH OF KEWANEE...MOVING
  EAST AT 45 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  DUNCAN
  CASTLETON
  PRINCEVILLE
  CAMP GROVE
  SPARLAND
  CHILLICOTHE
  ROME
  HENRY

IF YOU ARE IN THE PATH OF THIS STORM...ACT NOW TO PROTECT YOURSELF.
DO NOT WAIT UNTIL YOU SEE THE TORNADO BEFORE TAKING ACTION. YOU MAY
NOT SEE OR HEAR ITS APPROACH.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 4117 8992 4092 8999 4087 8952 4113 8935

HEDGES/AUTEN

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 9:37 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	53 min
Apr 6, 11:09 AM CDT	Severe Thunderstorm Warning	ILX	Knox, Stark	66 min
Apr 6, 12:01 PM CDT	Tornado Warning	ILX	Woodford	44 min
Apr 6, 12:41 PM CDT	Severe Thunderstorm Warning	ILX	McLean	49 min
Apr 6, 1:40 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	50 min
Apr 6, 2:04 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	56 min

Nearby

Tornado Warnings in Illinois, 2001 Every tornado warning in 2001 Tornadoes in 2001

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; radar from the NEXRAD Level II archive.