Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 13, NWS Lincoln, IL

May 23, 2004Scott County, Illinois

NWS Lincoln, IL issued this tornado warning at May 23, 2004, 5:06 PM CDT for Scott County, Illinois. It was in force for 54 min. 4 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: May 23, 2004, 5:06 PM CDT (22:06 UTC)
Expired: May 23, 2004, 6:00 PM CDT
In force: 54 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Scott County, IL

The radar

The St Louis radar (KLSX), 106 km from the middle of the area, began a volume at 22:08 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.

What was reported inside it

Time	Report	Where	Remark
May 23, 5:36 PM CDT	HAIL 0.88	Winchester, IL	SHERIFF OFFICE REPORTED NICKEL SIZE HAIL.
May 23, 5:36 PM CDT	HAIL 0.88	Winchester, IL	SHERIFF OFFICE REPORTED NICKEL SIZE HAIL.
May 23, 5:36 PM CDT	HAIL 0.88	Winchester, IL	SHERIFF OFFICE REPORTED NICKEL SIZE HAIL.
May 23, 5:36 PM CDT	HAIL 0.88	Winchester, IL	SHERIFF OFFICE REPORTED NICKEL SIZE HAIL.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 1:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 174 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: 435 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 232206
TORILX
ILC171-232300-

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  SCOTT COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 600 PM CDT

* AT 506 PM CDT...RADAR INDICATED A DEVELOPING TORNADO 5 MILES WEST
  OF FLORENCE...OR ABOUT 6 MILES EAST OF PITTSFIELD...MOVING EAST AT
  30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  OXVILLE
  EXETER
  WINCHESTER
  GLASGOW
  ALSEY
  RIGGSTON
  MERRITT
  MANCHESTER

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 3972 9066 3953 9062 3954 9032 3971 9037

$$

AUTEN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 11:52 AM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper	38 min
May 23, 12:20 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland	40 min
May 23, 12:28 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	62 min
May 23, 12:35 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford	40 min
May 23, 1:19 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	41 min
May 23, 5:42 PM CDT	Tornado Warning	ILX	Morgan	63 min
May 23, 6:03 PM CDT	Tornado Warning	ILX	McLean	57 min
May 23, 6:23 PM CDT	Tornado Warning	ILX	Sangamon	67 min
May 23, 6:38 PM CDT	Tornado Warning	ILX	Christian	67 min
May 23, 6:43 PM CDT	Tornado Warning	ILX	Morgan	32 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; radar from the NEXRAD Level II archive.