Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 38, NWS St. Louis, MO

April 19, 2011Fayette County, Illinois

NWS St. Louis, MO issued this tornado warning at Apr 19, 2011, 8:33 PM CDT for Fayette County, Illinois. It was in force for 42 min. 3 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: Apr 19, 2011, 8:33 PM CDT (01:33 UTC)
Expired: Apr 19, 2011, 9:15 PM CDT
In force: 42 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

County Fayette County, IL

The radar

The Lincoln radar (KILX), 125 km from the middle of the area, began a volume at 01:36 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
Apr 19, 8:40 PM CDT	HAIL 0.5	Ramsey, IL
Apr 19, 8:54 PM CDT	TSTM WND DMG	7 N Brownstown, IL	NICKEL SIZE HAIL AND SMALL TREE LIMBS BLOWN DOWN
Apr 19, 8:54 PM CDT	HAIL 0.88	7 N Brownstown, IL	NICKEL SIZE HAIL AND SMALL TREE LIMBS BLOWN DOWN

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
Apr 19, 1:00 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.6 hours before the alert went out and 124 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: 2409 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 370 m²/s²
0-3 km storm-relative helicity: 547 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 24.4

Open this sounding in Storm Lab

The text

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

697 
WFUS53 KLSX 200133
TORLSX
ILC051-200215-
/O.NEW.KLSX.TO.W.0038.110420T0133Z-110420T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
833 PM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 915 PM CDT

* AT 831 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR MULBERRY GROVE...OR 9 MILES WEST OF
  VANDALIA...AND MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VANDALIA...RAMSEY...BROWNSTOWN...ST. ELMO...WRIGHTS CORNER...
  HAGERSTOWN...SHAFTER...BINGHAM...BAYLE CITY...AVENA AND ST. JAMES.

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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3896 8881 3882 8926 3910 8926 3922 8894
      3922 8881 3919 8880
TIME...MOT...LOC 0133Z 244DEG 56KT 3898 8923

$$

TILLY

1 follow-up statement

889 
WWUS53 KLSX 200209
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
909 PM CDT TUE APR 19 2011

ILC051-200218-
/O.EXP.KLSX.TO.W.0038.000000T0000Z-110420T0215Z/
FAYETTE IL-
909 PM CDT TUE APR 19 2011

...THE TORNADO WARNING FOR NORTHERN AND CENTRAL PORTIONS OF FAYETTE 
COUNTY WILL EXPIRE AT 915 PM CDT...

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

THERE IS STILL A TORNADO WARNING IN EFFECT ACROSS PORTIONS OF 
SOUTHERN FAYETTE COUNTY UNTIL 930 PM. 

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

LAT...LON 3896 8881 3882 8926 3910 8926 3922 8894
      3922 8881 3919 8880
TIME...MOT...LOC 0208Z 246DEG 56KT 3921 8859

$$

TILLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:30 PM CDT	Tornado Warning	LSX	Madison, Saint Clair	45 min
Apr 19, 7:34 PM CDT	Tornado Warning	LSX	Randolph	41 min
Apr 19, 7:35 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	40 min
Apr 19, 7:37 PM CDT	Tornado Warning	LSX	Monroe	36 min
Apr 19, 7:51 PM CDT	Tornado Warning	LSX	Saint Clair	39 min
Apr 19, 7:54 PM CDT	Tornado Warning	LSX	Randolph	36 min
Apr 19, 7:56 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Montgomery	34 min
Apr 19, 8:00 PM CDT	Tornado Warning	LSX	Bond, Clinton, Madison	45 min
Apr 19, 8:02 PM CDT	Areal Flood Advisory	LSX	Bond, Macoupin, Montgomery	4 hr
Apr 19, 8:18 PM CDT	Tornado Warning	LSX	Randolph, Saint Clair, Washington	42 min
Apr 19, 8:25 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	22 min
Apr 19, 8:33 PM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion, Washington	57 min
Apr 19, 9:37 PM CDT	Severe Thunderstorm Warning	LSX	Madison	21 min
Apr 19, 9:41 PM CDT	River Flood Warning	LSX	Fayette	13 days

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.