Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 37, NWS St. Louis, MO

May 30, 2004Brown County, Illinois

NWS St. Louis, MO issued this tornado warning at May 30, 2004, 4:47 PM CDT for Brown County, Illinois. It was in force for 28 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 30, 2004, 4:47 PM CDT (21:47 UTC)
Expired: May 30, 2004, 5:15 PM CDT
In force: 28 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Brown County, IL

The radar

The Lincoln radar (KILX), 110 km from the middle of the area, began a volume at 21:51 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 30, 5:00 PM CDT	TSTM WND DMG	Rushville, IL	3 SMALL TREES DOWN. REPORTED BY SHERIFF.
May 30, 5:00 PM CDT	TSTM WND DMG	Rushville, IL	3 SMALL TREES DOWN. REPORTED BY SHERIFF.
May 30, 5:00 PM CDT	TSTM WND DMG	Rushville, IL	3 SMALL TREES DOWN. REPORTED BY SHERIFF.
May 30, 5:00 PM CDT	TSTM WND DMG	Rushville, IL	3 SMALL TREES DOWN. REPORTED BY SHERIFF.

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 30, 10:50 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.8 hours before the alert went out and 172 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: 1629 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

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

180 
WFUS53 KLSX 302147
TORLSX
ILC009-302215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
447 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 515 PM CDT

* AT 447 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR MOUNT STERLING. THE
  STORM WAS MOVING EAST AT 45 MPH...AND MAY PRODUCE A TORNADO AT ANY
  TIME

* LOCATIONS IMPACTED INCLUDE...
  RIPLEY
  COOPERTOWN
  LA GRANGE

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A
BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY
ON THE LOWEST LEVEL OF A STURDY BUILDING.

LAT...LON 4008 9091 3985 9094 4001 9012 4023 9021

$$

CVKING/FG

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 3:27 PM CDT	Tornado Warning	LSX	Adams	48 min
May 30, 4:04 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Madison, Montgomery	41 min
May 30, 4:06 PM CDT	Severe Thunderstorm Warning	LSX	Brown	39 min
May 30, 4:09 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair	51 min
May 30, 4:13 PM CDT	Tornado Warning	LSX	Bond, Madison, Montgomery	47 min
May 30, 4:20 PM CDT	Tornado Warning	LSX	Bond, Clinton, Madison, Saint Clair	40 min
May 30, 4:32 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	28 min
May 30, 4:44 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	46 min
May 30, 4:48 PM CDT	Tornado Warning	LSX	Fayette, Montgomery	42 min
May 30, 4:51 PM CDT	Tornado Warning	LSX	Monroe	39 min
May 30, 4:55 PM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion	50 min
May 30, 5:09 PM CDT	Severe Thunderstorm Warning	LSX	Madison	36 min
May 30, 5:19 PM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	41 min
May 30, 5:44 PM CDT	Tornado Warning	LSX	Fayette	31 min
May 30, 5:50 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	25 min
May 30, 6:14 PM CDT	Tornado Warning	LSX	Washington	46 min
May 30, 6:36 PM CDT	Tornado Warning	LSX	Marion	39 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.