Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 114, NWS Lincoln, IL

October 11, 2021McLean County, Woodford County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Oct 11, 2021, 5:14 PM CDT for McLean County, Woodford County, Illinois. It was in force for 61 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
Oct 11, 2021, 5:14 PM CDT (22:14 UTC)
Expired
Oct 11, 2021, 6:15 PM CDT
In force
61 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties McLean County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 74 km from the middle of the area, began a volume at 22:18 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

TimeReportWhereRemark
Oct 11, 5:31 PM CDTTSTM WND GST 531 Ssw Central Illinois, ILAWOS STATION KBMI CENTRAL ILLINOIS AIRPORT.
Oct 11, 5:35 PM CDTFUNNEL CLOUD1 Ssw El Paso, IL
Oct 11, 5:39 PM CDTTORNADO2 Sw El Paso, ILLATE REPORT. AN EF-U TORNADO TOUCHED DOWN IN AN OPEN FIELD AND TRAVELED NORTH-NORTHEAST ACROSS HWY 24. PATH LENGTH WAS 2.5 MILES WITH A PATH WIDTH OF 50 YEARDS.

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.

IssuedProductOfficeLasted
Oct 11, 3:10 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.2 hours before the alert went out and 61 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.

588 
WUUS53 KILX 112214
SVRILX
ILC113-203-112315-
/O.NEW.KILX.SV.W.0114.211011T2214Z-211011T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
514 PM CDT Mon Oct 11 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Eastern Woodford County in central Illinois...
  McLean County in central Illinois...

* Until 615 PM CDT.

* At 514 PM CDT, severe thunderstorms were located along a line
  extending from Danvers to near Heyworth, moving northeast at 35
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Carlock around 520 PM CDT.
  Bloomington around 525 PM CDT.
  Hudson and Downs around 530 PM CDT.

Other locations in the path of these severe thunderstorms include
Normal, El Paso, Towanda, Gridley, Cooksville, Lexington and Chenoa.

This includes the following highways...
 Interstate 39 between mile markers 0 and 21.
 Interstate 55 between mile markers 146 and 187.
 Interstate 74 between mile markers 117 and 143.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4075 8893 4076 8860 4075 8858 4062 8858
      4061 8846 4048 8846 4031 8915 4055 8924
      4093 8897 4093 8893
TIME...MOT...LOC 2214Z 217DEG 30KT 4054 8917 4036 8907 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon
4 follow-up statements
577 
WWUS53 KILX 112235
SVSILX

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

ILC113-203-112315-
/O.CON.KILX.SV.W.0114.000000T0000Z-211011T2315Z/
Woodford-McLean-
535 PM CDT Mon Oct 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR EASTERN WOODFORD AND CENTRAL MCLEAN COUNTIES...

At 535 PM CDT, severe thunderstorms were located along a line
extending from near El Paso to near Towanda, moving northeast at 40
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  El Paso, Cooksville, Lexington, Gridley, Colfax and Chenoa.

This includes the following highways...
 Interstate 39 between mile markers 0 and 21.
 Interstate 55 between mile markers 162 and 187.
 Interstate 74 between mile markers 126 and 128, and between mile
markers 138 and 143.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4075 8893 4076 8860 4075 8858 4062 8858
      4061 8846 4048 8846 4037 8891 4067 8915
      4093 8897 4093 8893
TIME...MOT...LOC 2235Z 224DEG 36KT 4070 8906 4049 8885 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon
255 
WWUS53 KILX 112254
SVSILX

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

ILC113-203-112315-
/O.CON.KILX.SV.W.0114.000000T0000Z-211011T2315Z/
Woodford-McLean-
554 PM CDT Mon Oct 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHEASTERN WOODFORD AND NORTHEASTERN MCLEAN COUNTIES...

At 554 PM CDT, severe thunderstorms were located along a line
extending from near El Paso to Colfax, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
El Paso, Lexington, Chenoa, Gridley, Colfax, Cooksville, Pleasant
Hill, Arrowsmith, Cropsey, Anchor, Panola and Weston.

This includes the following highways...
 Interstate 39 between mile markers 16 and 21.
 Interstate 55 between mile markers 178 and 187.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4075 8893 4076 8860 4075 8858 4062 8858
      4061 8846 4048 8846 4044 8866 4059 8874
      4071 8894 4076 8909 4093 8897 4093 8893
TIME...MOT...LOC 2254Z 235DEG 29KT 4081 8897 4054 8863 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon
426 
WWUS53 KILX 112302
SVSILX

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

ILC203-112312-
/O.CAN.KILX.SV.W.0114.000000T0000Z-211011T2315Z/
Woodford-
602 PM CDT Mon Oct 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WOODFORD COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 4076 8860 4075 8858 4062 8858 4061 8846
      4048 8846 4046 8858 4060 8868 4068 8872
      4075 8875
TIME...MOT...LOC 2302Z 268DEG 42KT 4071 8866 4050 8857 

$$

ILC113-112315-
/O.CON.KILX.SV.W.0114.000000T0000Z-211011T2315Z/
McLean-
602 PM CDT Mon Oct 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHEASTERN MCLEAN COUNTY...

At 602 PM CDT, severe thunderstorms were located along a line
extending from near Chenoa to near Colfax, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Chenoa, Colfax, Cropsey, Anchor and Weston. 

This includes Interstate 55 between mile markers 185 and 186.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4076 8860 4075 8858 4062 8858 4061 8846
      4048 8846 4046 8858 4060 8868 4068 8872
      4075 8875
TIME...MOT...LOC 2302Z 268DEG 42KT 4071 8866 4050 8857 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon
146 
WWUS53 KILX 112310
SVSILX

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

ILC113-112320-
/O.EXP.KILX.SV.W.0114.000000T0000Z-211011T2315Z/
McLean-
610 PM CDT Mon Oct 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCLEAN COUNTY
WILL EXPIRE AT 615 PM CDT...
    
The storms which prompted the warning will move out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

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

LAT...LON 4076 8860 4075 8858 4062 8858 4061 8846
      4048 8846 4046 8858 4060 8868 4068 8872
      4075 8875
TIME...MOT...LOC 2310Z 217DEG 30KT 4076 8861 4055 8852 

$$

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, 2:50 PM CDTTornado Warning Tornado observedILXMorgan25 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, 5:38 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

Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.