Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 128, NWS St. Louis, MO

June 21, 2011Fayette County, Marion County, Illinois

NWS St. Louis, MO issued this tornado warning at Jun 21, 2011, 4:40 PM CDT for Fayette County, Marion County, Illinois. It was in force for 31 min. 1 report 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: Jun 21, 2011, 4:40 PM CDT (21:40 UTC)
Expired: Jun 21, 2011, 5:11 PM CDT
In force: 31 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Fayette County, IL, Marion County, IL

The radar

The Evansville,IN radar (KVWX), 121 km from the middle of the area, began a volume at 21:43 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
Jun 21, 5:00 PM CDT	TSTM WND GST 40	Wrights Corner, 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
Jun 21, 1:22 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 138 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: 489 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1353 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -245 m²/s²
0-3 km storm-relative helicity: -164 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -5.5

Open this sounding in Storm Lab

The text

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

138 
WFUS53 KLSX 212140
TORLSX
ILC051-121-212230-
/O.NEW.KLSX.TO.W.0128.110621T2140Z-110621T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
440 PM CDT TUE JUN 21 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...
  NORTHEASTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 530 PM CDT

* AT 438 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED
  TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE. THIS
  DANGEROUS STORM WAS LOCATED NEAR KINMUNDY...OR 10 MILES NORTHEAST
  OF SALEM...AND MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FARINA...BROWNSTOWN...ST. ELMO...WRIGHTS CORNER...ST. PETER...
  LOOGOOTEE...AVENA...ST. JAMES AND LA CLEDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3864 8886 3876 8903 3922 8897 3922 8881
      3921 8880 3892 8880 3891 8869 3874 8869
TIME...MOT...LOC 2140Z 222DEG 54KT 3878 8884

$$

PHILLIPSON

1 follow-up statement

800 
WWUS53 KLSX 212211
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
511 PM CDT TUE JUN 21 2011

ILC051-121-212221-
/O.CAN.KLSX.TO.W.0128.000000T0000Z-110621T2230Z/
MARION IL-FAYETTE IL-
511 PM CDT TUE JUN 21 2011

...THE TORNADO WARNING FOR EASTERN FAYETTE AND NORTHEASTERN MARION
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 800 PM.

LAT...LON 3864 8886 3876 8903 3922 8897 3922 8881
      3921 8880 3892 8880 3891 8869 3874 8869
TIME...MOT...LOC 2211Z 222DEG 54KT 3912 8844

$$

PHILLIPSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 2:44 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	46 min
Jun 21, 3:14 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair, Washington	46 min
Jun 21, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Randolph, Saint Clair, Washington	47 min
Jun 21, 4:09 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Madison, Marion, Montgomery	51 min
Jun 21, 6:34 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	41 min

Nearby

Tornado Warnings in Illinois, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.