Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 35, NWS Lincoln, IL

October 11, 2021Morgan County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 11, 2021, 2:50 PM CDT for Morgan County, Illinois. It was in force for 25 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
Oct 11, 2021, 2:50 PM CDT (19:50 UTC)
Expired
Oct 11, 2021, 3:15 PM CDT
In force
25 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Observed
Hail
0.0 in

County Morgan County, IL

The radar

The Lincoln radar (KILX), 90 km from the middle of the area, began a volume at 19:52 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, 7.8 hours before the alert went out and 145 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 2021-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 287 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 2021-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 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
287 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

542 
WFUS53 KILX 111950
TORILX
ILC137-112015-
/O.NEW.KILX.TO.W.0035.211011T1950Z-211011T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
250 PM CDT Mon Oct 11 2021

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southeastern Morgan County in west central Illinois...

* Until 315 PM CDT.

* At 250 PM CDT, a confirmed tornado was located near Athensville, or
  9 miles northeast of White Hall, moving north at 35 mph.

  HAZARD...Damaging tornado.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* The tornado will be near...
  Murrayville around 300 PM CDT.
  Woodson around 305 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Jacksonville.

This includes Interstate 72 between mile markers 66 and 71.
 
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 3975 9019 3972 9003 3952 9015 3952 9028
TIME...MOT...LOC 1950Z 198DEG 32KT 3949 9025 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

Shimon
3 follow-up statements
842 
WWUS53 KILX 111958
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
258 PM CDT Mon Oct 11 2021

ILC137-112015-
/O.CON.KILX.TO.W.0035.000000T0000Z-211011T2015Z/
Morgan-
258 PM CDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
SOUTHEASTERN MORGAN COUNTY...
    
At 258 PM CDT, a confirmed tornado was located near Murrayville, or
12 miles south of Jacksonville, moving north at 35 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Woodson around 305 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Jacksonville.

This includes Interstate 72 between mile markers 66 and 71.
 
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 3975 9019 3972 9003 3952 9015 3952 9028
TIME...MOT...LOC 1958Z 202DEG 31KT 3956 9020 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

Shimon
530 
WWUS53 KILX 112005
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
305 PM CDT Mon Oct 11 2021

ILC137-112015-
/O.CON.KILX.TO.W.0035.000000T0000Z-211011T2015Z/
Morgan-
305 PM CDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
SOUTHEASTERN MORGAN COUNTY...
    
At 304 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Woodson, or 9 miles southeast of Jacksonville,
moving northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
southeastern Morgan County, including the following locations... Lake
Jacksonville and Nortonville.

This includes Interstate 72 between mile markers 66 and 71.
 
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 3975 9019 3972 9003 3952 9015 3952 9028
TIME...MOT...LOC 2004Z 206DEG 34KT 3961 9016 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Shimon
690 
WWUS53 KILX 112015
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
315 PM CDT Mon Oct 11 2021

ILC137-112023-
/O.EXP.KILX.TO.W.0035.000000T0000Z-211011T2015Z/
Morgan-
315 PM CDT Mon Oct 11 2021

...THE TORNADO WARNING FOR SOUTHERN MORGAN COUNTY WILL EXPIRE AT
315 PM CDT...
    
The Tornado Warning that was previously in effect has been reissued 
for northeastern Morgan and west-central Sangamon counties and is in 
effect until 345 pm. Please refer to that bulletin for the latest 
severe weather information.

A Tornado Watch remains in effect until 900 PM CDT for west central
Illinois.

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 northeastern 
Morgan and west-central Sangamon counties until 345 pm.

LAT...LON 3975 9019 3972 9003 3952 9015 3952 9028
TIME...MOT...LOC 2013Z 198DEG 32KT 3968 9013 

$$

Shimon

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 12:00 PM CDTSpecial Weather StatementILXMorgan30 min
Oct 11, 12:55 PM CDTSpecial Weather StatementILXSangamon35 min
Oct 11, 2:08 PM CDTSpecial Weather StatementILXSchuyler, Scott37 min
Oct 11, 2:27 PM CDTSpecial Weather StatementILXCrawford, Lawrence, Richland33 min
Oct 11, 3:12 PM CDTTornado WarningILXMorgan, Sangamon33 min
Oct 11, 3:32 PM CDTTornado Warning Tornado observedILXCass, Menard, Morgan, Sangamon30 min
Oct 11, 3:50 PM CDTTornado Warning Tornado observedILXFulton, Mason, Tazewell25 min
Oct 11, 4:21 PM CDTTornado WarningILXLogan, Mason24 min
Oct 11, 4:47 PM CDTTornado Warning Tornado observedILXMarshall, Woodford28 min
Oct 11, 4:56 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, Macon, Piatt49 min
Oct 11, 5:03 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, McLean, Macon, Piatt42 min
Oct 11, 5:14 PM CDTSevere Thunderstorm WarningILXMcLean, Woodford61 min
Oct 11, 5:38 PM CDTTornado WarningILXWoodford20 min
Oct 11, 5:42 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, Douglas, McLean, Macon, Piatt63 min
Oct 11, 6:52 PM CDTSpecial Weather StatementILXChampaign, Douglas, Vermilion83 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.