Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 1, NWS Lincoln, IL

April 20, 2004Champaign County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 20, 2004, 2:30 PM CDT for Champaign County, Illinois. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 20, 2004, 2:30 PM CDT (19:30 UTC)
Expired: Apr 20, 2004, 3:15 PM CDT
In force: 45 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Champaign County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 20, 2:32 PM CDT	TORNADO	3 Ne Philo, IL	TRAINED SPOTTER REPORTED A BRIEF TORNADO TOUCHDOWN AT THE INTERSECTION OF COUNTY ROADS 1900E AND 1100N. STARTING TO DISSIPATING NOW. SAME TORNADO...MULTIPLE TOUCHDOWNS.
Apr 20, 2:32 PM CDT	TORNADO	3 Ne Philo, IL	TRAINED SPOTTER REPORTED A BRIEF TORNADO TOUCHDOWN AT THE INTERSECTION OF COUNTY ROADS 1900E AND 1100N. STARTING TO DISSIPATING NOW. SAME TORNADO...MULTIPLE TOUCHDOWNS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 42 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: 1297 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 169 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 
WFUS53 KILX 201930
TORILX
ILC019-202015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
230 PM CDT TUE APR 20 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 315 PM CDT

* AT 230 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
  ROTATION OVER PHILO...OR ABOUT 10 MILES SOUTH OF CHAMPAIGN...MOVING
  NORTHEAST AT 30 MPH. THIS STORM COULD PRODUCE A TORNADO AT ANY
  TIME. IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND
  DAMAGING WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE
  NOW

* THE TORNADO IS EXPECTED TO BE NEAR...
  ST. JOSEPH
  HOMER
  OGDEN
  ROYAL
  GIFFORD

OTHER LOCATIONS IN THIS WARNING INCLUDE...BROADLANDS...SAVOY...SIDNEY
AND URBANA.

FUNNEL CLOUDS WITH THIS STORM MAY TOUCH DOWN AT ANY TIME. DO NOT WAIT
FOR THE FUNNEL CLOUD TO TOUCH DOWN.

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 4001 8831 3991 8813 3989 8795 4019 8795
          4039 8803

$$

BARNES

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 4:42 PM CDT	Severe Thunderstorm Warning	ILX	Mason	63 min
Apr 20, 5:11 PM CDT	Tornado Warning	ILX	Marshall	64 min
Apr 20, 5:14 PM CDT	Severe Thunderstorm Warning	ILX	Tazewell	61 min
Apr 20, 5:27 PM CDT	Tornado Warning	ILX	Tazewell	63 min
Apr 20, 5:49 PM CDT	Tornado Warning	ILX	Knox, Stark	41 min
Apr 20, 5:51 PM CDT	Tornado Warning	ILX	Marshall	9 min
Apr 20, 5:55 PM CDT	Severe Thunderstorm Warning	ILX	McLean	35 min
Apr 20, 5:55 PM CDT	Tornado Warning	ILX	Marshall	35 min
Apr 20, 6:05 PM CDT	Tornado Warning	ILX	Woodford	55 min

Nearby

Tornado Warnings in Illinois, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.