Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 20, NWS Lincoln, IL

May 23, 2004Sangamon County, Illinois

NWS Lincoln, IL issued this tornado warning at May 23, 2004, 7:28 PM CDT for Sangamon County, Illinois. It was in force for 32 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: May 23, 2004, 7:28 PM CDT (00:28 UTC)
Expired: May 23, 2004, 8:00 PM CDT
In force: 32 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 68 km from the middle of the area, began a volume at 00:31 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

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 111 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: 2833 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 727 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 13.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 240028
TORILX
ILC167-240100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
727 PM CDT SUN MAY 23 2004

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 727 PM CDT...SPOTTERS REPORTED A WALL CLOUD NEAR THAYER...OR 
ABOUT 19 MILES NORTHEAST OF CARLINVILLE...MOVING EAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  PAWNEE

OTHER LOCATIONS IN THIS WARNING INCLUDE...AUBURN...DIVERNON AND
GLENARM.

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 3964 8978 3953 8979 3953 8954 3964 8954

$$

AUTEN

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:05 PM CDT	Severe Thunderstorm Warning	ILX	Macon	55 min
May 23, 7:19 PM CDT	Tornado Warning	ILX	Shelby	56 min
May 23, 7:30 PM CDT	Tornado Warning	ILX	Moultrie	60 min
May 23, 7:39 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Woodford	66 min
May 23, 7:39 PM CDT	Tornado Warning	ILX	Christian	66 min
May 23, 7:46 PM CDT	Severe Thunderstorm Warning	ILX	Tazewell	59 min
May 23, 7:51 PM CDT	Tornado Warning	ILX	McLean, Tazewell	54 min
May 23, 7:52 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas	53 min
May 23, 8:01 PM CDT	Tornado Warning	ILX	Coles	44 min
May 23, 8:13 PM CDT	Severe Thunderstorm Warning	ILX	Shelby	62 min
May 23, 8:18 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	57 min
May 23, 8:23 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	52 min
May 23, 8:33 PM CDT	Severe Thunderstorm Warning	ILX	Clark	57 min
May 23, 8:45 PM CDT	Tornado Warning	ILX	Christian	60 min
May 23, 9:01 PM CDT	Severe Thunderstorm Warning	ILX	Coles	59 min
May 23, 9:10 PM CDT	Flash Flood Warning	ILX	Christian	6 hr

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.