Alert archive / Illinois / Tornado Warnings in 2011

Tornado Warning 31, NWS Lincoln, IL

May 22, 2011Knox County, Peoria County, Stark County, Illinois

NWS Lincoln, IL issued this tornado warning at May 22, 2011, 7:28 PM CDT for Knox County, Peoria County, Stark County, Illinois. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 22, 2011, 7:28 PM CDT (00:28 UTC)
Expired
May 22, 2011, 7:49 PM CDT
In force
21 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

Counties Knox County, IL, Peoria County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 97 km from the middle of the area, began a volume at 00:30 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.

The watch it was issued in

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

IssuedProductOfficeLasted
May 22, 12:51 PM CDTTornado WatchSPC10 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.5 hours before the alert went out and 93 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-pSkew-T log-p diagram, Davenport, at 00:00Z on 2011-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1935 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2011-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1935 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
935 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
364 m²/s²
Significant tornado parameter
3.4
Supercell composite
19.9

Open this sounding in Storm Lab

The text

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

777 
WFUS53 KILX 230028
TORILX
ILC095-143-175-230115-
/O.NEW.KILX.TO.W.0031.110523T0028Z-110523T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
728 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL KNOX COUNTY IN WEST CENTRAL ILLINOIS...
  NORTHWESTERN PEORIA COUNTY IN CENTRAL ILLINOIS...
  SOUTHERN STARK COUNTY IN NORTH CENTRAL ILLINOIS...

* UNTIL 815 PM CDT.

* AT 725 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
  NEAR WILLIAMSFIELD...OR 18 MILES EAST OF GALESBURG. A TORNADO MAY
  DEVELOP AT ANY TIME. DOPPLER RADAR SHOWED THIS DANGEROUS STORM
  MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PING PONG BALLS
  IS ALSO POSSIBLE WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  WILLIAMSFIELD...BRIMFIELD...LAURA...ELMORE...WEST JERSEY...
  PRINCEVILLE...TOULON...MONICA AND DUNCAN.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 61 AND 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

LAT...LON 4096 8961 4078 8999 4087 9015 4112 8987
TIME...MOT...LOC 0028Z 231DEG 23KT 4088 9003

$$
GEELHART
2 follow-up statements
566 
WWUS53 KILX 230040
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
740 PM CDT SUN MAY 22 2011

ILC095-230049-
/O.CAN.KILX.TO.W.0031.000000T0000Z-110523T0115Z/
KNOX IL-
740 PM CDT SUN MAY 22 2011

...THE TORNADO WARNING FOR EAST CENTRAL KNOX COUNTY IS CANCELLED...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM.

LAT...LON 4096 8961 4078 8999 4100 8998 4112 8987
TIME...MOT...LOC 0039Z 231DEG 23KT 4092 8996

$$
ILC143-175-230115-
/O.CON.KILX.TO.W.0031.000000T0000Z-110523T0115Z/
PEORIA IL-STARK IL-
740 PM CDT SUN MAY 22 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN STARK AND
NORTHWESTERN PEORIA COUNTIES UNTIL 815 PM CDT...

AT 734 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR WILLIAMSFIELD...OR 21 MILES EAST OF
GALESBURG...MOVING NORTHEAST AT 25 MPH. THIS STORM HAS A HISTORY 
OF PRODUCING FUNNEL CLOUDS.

LOCATIONS IMPACTED INCLUDE...
  LAURA...ELMORE...WEST JERSEY...PRINCEVILLE...TOULON...MONICA AND
  DUNCAN.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 69 AND 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

LAT...LON 4096 8961 4078 8999 4100 8998 4112 8987
TIME...MOT...LOC 0039Z 231DEG 23KT 4092 8996

$$
GEELHART
604 
WWUS53 KILX 230049
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
749 PM CDT SUN MAY 22 2011

ILC143-175-230059-
/O.CAN.KILX.TO.W.0031.000000T0000Z-110523T0115Z/
PEORIA IL-STARK IL-
749 PM CDT SUN MAY 22 2011

...THE TORNADO WARNING FOR SOUTHERN STARK AND NORTHWESTERN PEORIA
COUNTIES IS CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM. 

LAT...LON 4096 8961 4078 8999 4100 8998 4112 8987
TIME...MOT...LOC 0049Z 231DEG 23KT 4096 8989

$$
GEELHART

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 7:03 PM CDTSevere Thunderstorm WarningILXFulton, Knox, Peoria26 min
May 22, 7:42 PM CDTSevere Thunderstorm WarningILXKnox, Peoria, Stark33 min
May 22, 8:44 PM CDTSpecial Weather StatementILXSangamon31 min
May 22, 9:40 PM CDTSpecial Weather StatementILXMacon35 min
May 23, 12:53 PM CDTSpecial Weather StatementILXChristian, Clay, Effingham, Moultrie, Shelby82 min
May 23, 1:21 PM CDTSevere Thunderstorm WarningILXChristian, Effingham, Moultrie, Shelby54 min
May 23, 1:49 PM CDTSpecial Weather StatementILXClay, Jasper, Richland41 min
May 23, 2:14 PM CDTSevere Thunderstorm WarningILXClay, Crawford, Jasper, Lawrence, Richland61 min
May 23, 2:17 PM CDTSevere Thunderstorm WarningILXCumberland, Effingham, Jasper, Shelby58 min
May 23, 2:42 PM CDTSevere Thunderstorm WarningILXClark, Crawford, Edgar63 min
May 23, 2:51 PM CDTSevere Thunderstorm WarningILXLawrence54 min
May 23, 3:15 PM CDTSevere Thunderstorm WarningILXLawrence30 min
May 23, 3:16 PM CDTAreal Flood AdvisoryILXClay, Richland3 hr

Nearby

Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.