Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 11, NWS Lincoln, IL

May 6, 2021Christian County, Shelby County, Illinois

NWS Lincoln, IL issued this tornado warning at May 6, 2021, 2:17 PM CDT for Christian County, Shelby County, Illinois. It was in force for 28 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 6, 2021, 2:17 PM CDT (19:17 UTC)
Expired
May 6, 2021, 2:45 PM CDT
In force
28 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

Counties Christian County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 97 km from the middle of the area, began a volume at 19:19 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.3 hours before the alert went out and 100 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, Lincoln, IL at 12:00Z on 2021-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 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, Lincoln, IL at 12:00Z on 2021-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
16 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
1453 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

562 
WFUS53 KILX 061917
TORILX
ILC021-173-061945-
/O.NEW.KILX.TO.W.0011.210506T1917Z-210506T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
217 PM CDT Thu May 6 2021

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southeastern Christian County in central Illinois...
  Southwestern Shelby County in central Illinois...

* Until 245 PM CDT.

* At 216 PM CDT, a confirmed tornado was located over Pana, or 12
  miles east of Nokomis, moving southeast at 25 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...Expect damage to mobile homes, roofs, and vehicles.

* The tornado will be near...
  Tower Hill around 220 PM CDT.
  Cowden around 245 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Herrick and Oconee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3933 8914 3935 8914 3935 8916 3945 8900
      3926 8876 3921 8884 3921 8904
TIME...MOT...LOC 1916Z 317DEG 22KT 3936 8907 

TORNADO...OBSERVED
HAIL...<.75IN

$$

25
2 follow-up statements
692 
WWUS53 KILX 061924
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
224 PM CDT Thu May 6 2021

ILC021-061933-
/O.CAN.KILX.TO.W.0011.000000T0000Z-210506T1945Z/
Christian-
224 PM CDT Thu May 6 2021

...THE TORNADO WARNING FOR SOUTHEASTERN CHRISTIAN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3926 8876 3921 8884 3921 8897 3932 8906
      3941 8895
TIME...MOT...LOC 1923Z 314DEG 38KT 3931 8897 

$$

ILC173-061945-
/O.CON.KILX.TO.W.0011.000000T0000Z-210506T1945Z/
Shelby-
224 PM CDT Thu May 6 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR
SOUTHWESTERN SHELBY COUNTY...
    
At 223 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Tower Hill, or 11 miles southwest of Shelbyville,
moving southeast at 40 mph.

HAZARD...TORNADO.

SOURCE...Radar indicated rotation.

IMPACT...Expect damage to mobile homes, roofs, and vehicles.

This dangerous storm will be near...
  Cowden around 235 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Herrick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3926 8876 3921 8884 3921 8897 3932 8906
      3941 8895
TIME...MOT...LOC 1923Z 314DEG 38KT 3931 8897 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

25
638 
WWUS53 KILX 061938
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
238 PM CDT Thu May 6 2021

ILC173-061947-
/O.EXP.KILX.TO.W.0011.000000T0000Z-210506T1945Z/
Shelby-
238 PM CDT Thu May 6 2021

...THE TORNADO WARNING FOR SOUTHWESTERN SHELBY COUNTY WILL EXPIRE AT
245 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Lincoln.

Remember, a Tornado Warning still remains in effect for northeast 
Shelby County until 300 PM CDT.

LAT...LON 3926 8876 3921 8884 3921 8897 3932 8906
      3941 8895
TIME...MOT...LOC 1937Z 317DEG 22KT 3925 8890 

$$

25

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 1:10 PM CDTSpecial Weather StatementILXClay35 min
May 6, 1:29 PM CDTSevere Thunderstorm WarningILXClay, Richland46 min
May 6, 2:09 PM CDTSpecial Weather StatementILXLawrence36 min
May 6, 2:29 PM CDTTornado WarningILXMoultrie, Shelby31 min
May 6, 2:58 PM CDTSevere Thunderstorm WarningILXColes, Cumberland, Moultrie, Shelby26 min
May 6, 3:01 PM CDTSevere Thunderstorm WarningILXEffingham27 min
May 6, 3:22 PM CDTSevere Thunderstorm WarningILXClay, Effingham36 min
May 6, 4:39 PM CDTSpecial Weather StatementILXClay36 min
May 6, 4:46 PM CDTTornado WarningILXClay14 min

Nearby

Tornado Warnings in Illinois, 2021Every tornado warning in 2021Tornadoes in 2021

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.