Alert archive / Illinois / Tornado Warnings in 2006

Tornado Warning 84, NWS St. Louis, MO

May 1, 2006Randolph County, Illinois

NWS St. Louis, MO issued this tornado warning at May 1, 2006, 10:40 PM CDT for Randolph County, Illinois. It was in force for 35 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 1, 2006, 10:40 PM CDT (03:40 UTC)
Expired: May 1, 2006, 11:15 PM CDT
In force: 35 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Randolph County, IL

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 03:41 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
May 1, 10:40 PM CDT	HAIL 0.75	Ruma, IL
May 1, 10:55 PM CDT	FUNNEL CLOUD	Baldwin, IL
May 1, 10:55 PM CDT	HAIL 0.75	Baldwin, IL
May 1, 11:00 PM CDT	HAIL 0.75	4 W Sparta, IL

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 1, 5:17 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.7 hours before the alert went out and 249 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: 498 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 020339
TORLSX
ILC157-020415-
/O.NEW.KLSX.TO.W.0084.060502T0340Z-060502T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1040 PM CDT MON MAY 1 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 1115 PM CDT

* AT 1036 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 6 MILES NORTHWEST OF
  EVANSVILLE...MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EVANSVILLE...
  BALDWIN...
  SPARTA...
  COULTERVILLE...

THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY ISSUED FOR THE WARNED AREA.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3817 9001 3808 9001 3801 8960 3821 8960

$$

BRITT

2 follow-up statements

000 
WWUS53 KLSX 020359
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1059 PM CDT MON MAY 1 2006

ILC157-020415-
/O.CON.KLSX.TO.W.0084.000000T0000Z-060502T0415Z/
RANDOLPH IL-
1059 PM CDT MON MAY 1 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR 
NORTHERN RANDOLPH COUNTY...

AT 1056 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM WITH ROTATION OVER HOUSTON...MOVING 
EAST AT 35 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...EDEN...SPARTA AND 
COULTERVILLE.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3818 8979 3807 8980 3801 8960 3821 8960

$$

BRITT

000 
WWUS53 KLSX 020415 RRA
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1115 PM CDT MON MAY 1 2006

ILC157-020425-
/O.EXP.KLSX.TO.W.0084.000000T0000Z-060502T0415Z/
RANDOLPH IL-
1115 PM CDT MON MAY 1 2006

...THE TORNADO WARNING FOR NORTHERN RANDOLPH COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A TORNADO WATCH 
REMAINS IN EFFECT UNTIL MIDNIGHT CDT.

LAT...LON 3818 8979 3807 8980 3801 8960 3821 8960

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 9:06 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	39 min
May 1, 9:56 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	49 min
May 1, 10:06 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Montgomery	39 min
May 1, 10:29 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	46 min
May 1, 10:49 PM CDT	Tornado Warning	LSX	Washington	26 min
May 1, 11:14 PM CDT	Severe Thunderstorm Warning	LSX	Washington	46 min
May 2, 12:03 AM CDT	Severe Thunderstorm Warning	LSX	Monroe	42 min
May 2, 12:12 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair	48 min
May 2, 12:31 AM CDT	Severe Thunderstorm Warning	LSX	Randolph, Saint Clair	59 min
May 2, 12:47 AM CDT	Severe Thunderstorm Warning	LSX	Washington	58 min

Nearby

Tornado Warnings in Illinois, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.