Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 96, NWS Lincoln, IL

October 29, 2004McLean County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 29, 2004, 6:52 PM CDT for McLean County, Illinois. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 29, 2004, 6:52 PM CDT (23:52 UTC)
Expired: Oct 29, 2004, 7:30 PM CDT
In force: 38 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County McLean County, IL

The radar

The Lincoln radar (KILX), 98 km from the middle of the area, began a volume at 23:56 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

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 61 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: 859 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 775 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 292352
TORILX
ILC113-300030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
652 PM CDT FRI OCT 29 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  MCLEAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 730 PM CDT

* AT 652 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
  ROTATION OVER COLFAX...OR ABOUT 13 MILES WEST OF GIBSON CITY...
  MOVING NORTHEAST AT 40 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

* LOCATIONS IMPACTED INCLUDE...
  ANCHOR
  CROPSEY

ANOTHER LOCATION IN THIS WARNING IS...COOKSVILLE.

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

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 4054 8876 4041 8860 4088 8789 4106 8811

$$

BARNES

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 29, 5:48 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	57 min
Oct 29, 5:52 PM CDT	Severe Thunderstorm Warning	ILX	McLean	53 min
Oct 29, 6:45 PM CDT	Severe Thunderstorm Warning	ILX	McLean	45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.