Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 125, NWS Lincoln, IL

December 10, 20215 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Dec 10, 2021, 9:09 PM CST for 5 counties in Illinois. It was in force for 66 min. 6 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
Dec 10, 2021, 9:09 PM CST (03:09 UTC)
Expired
Dec 10, 2021, 10:15 PM CST
In force
66 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Christian County, IL, Macon County, IL, Moultrie County, IL, Piatt County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 90 km from the middle of the area, began a volume at 03:09 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
Dec 10, 9:26 PM CSTTORNADO1 W Herrick, IL*** 1 INJ *** DELAYED REPORT...***THIS TORNADO DEVELOPED OUTSIDE THE NWS CENTRAL ILLINOIS (ILX) COUNTY WARNING AREA (CWA), IN BOND COUNTY, CROSSING INTO FAYETTE COUNTY, BOTH COVERED BY NWS ST. LOUIS (LSX). THE TORNADO ENTERED SHELBY COUNTY AT 9:26 PM DOWNING S
Dec 10, 9:44 PM CSTTSTM WND DMG3 Nne Dalton City, ILSEVERAL LARGE EVERGREEN TREES DAMAGED.
Dec 10, 9:44 PM CSTTSTM WND GST 803 Nne Dalton City, ILMEASURED BY PERSONAL WEATHER STATION. ANEMOMETER WAS MOUNTED 10 FEET ABOVE GROUND.
Dec 10, 9:50 PM CSTTSTM WND DMG1 Ene Windsor, ILTREES WERE BLOWN DOWN AND POWER POLES WERE BENT ALONG RT 16 JUST NORTHEAST OF WINDSOR.
Dec 10, 9:52 PM CSTTORNADO2 W Gays, ILTREES DOWN AND POWER POLES BENT ALONG RT 16 JUST NORTHEAST OF WINDSOR. SILOS BLOWN DOWN AND HOUSES DAMAGED BETWEEN WINDSOR AND GAYS.
Dec 10, 9:53 PM CSTTORNADO2 Wsw Gays, ILFS PLANT WAS DESTROYED ALONG RT 16 WEST OF GAYS.

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
Dec 10, 5:17 PM CSTTornado WatchSPC6 hr
Dec 10, 7:47 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.2 hours before the alert went out and 90 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 00:00Z on 2021-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 119 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 00:00Z on 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 341 square meters per square second.1939587897Sfc1 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
119 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
341 m²/s²
0-3 km storm-relative helicity
357 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

456 
WUUS53 KILX 110309
SVRILX
ILC021-115-139-147-173-110415-
/O.NEW.KILX.SV.W.0125.211211T0309Z-211211T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
909 PM CST Fri Dec 10 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Southern Christian County in central Illinois...
  Moultrie County in central Illinois...
  Shelby County in central Illinois...
  Southern Piatt County in central Illinois...
  Southeastern Macon County in central Illinois...

* Until 1015 PM CST.

* At 909 PM CST, severe thunderstorms were located along a line
  extending from near Blue Mound to 6 miles northwest of Nokomis,
  moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Blue Mound around 915 PM CST.
  Macon around 920 PM CST.
  Pana around 925 PM CST.

Other locations in the path of these severe thunderstorms include
Mount Zion, Long Creek, Assumption, Tower Hill, Dalton City,
Westervelt, Findlay, Hammond, Bethany, Sullivan, Lovington and
Allenville.

This includes Interstate 57 between mile markers 169 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CST for central
Illinois. A Tornado Watch also remains in effect until 200 AM CST for
south central, central and east central Illinois.

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

A Tornado Watch remains in effect until 1100 PM CST for central
Illinois. A Tornado Watch also remains in effect until 200 AM CST for
south central, central and east central Illinois.

&&

LAT...LON 3922 8914 3935 8914 3935 8950 3965 8929
      3992 8847 3922 8848 3921 8857
TIME...MOT...LOC 0309Z 247DEG 44KT 3972 8919 3938 8934 

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

$$

Shimon
3 follow-up statements
702 
WWUS53 KILX 110329
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
929 PM CST Fri Dec 10 2021

ILC021-115-139-147-173-110415-
/O.CON.KILX.SV.W.0125.000000T0000Z-211211T0415Z/
Christian-Moultrie-Shelby-Piatt-Macon-
929 PM CST Fri Dec 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CST
FOR SOUTHEASTERN CHRISTIAN...MOULTRIE...SHELBY...SOUTHERN PIATT AND
SOUTHEASTERN MACON COUNTIES...

At 929 PM CST, severe thunderstorms were located along a line
extending from near Mount Zion to near Pana, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Mount Zion, Long Creek, Dalton City, Westervelt, Lovington, 
  Findlay, Bethany, Hammond, Sullivan and Allenville.

This includes Interstate 57 between mile markers 169 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CST for central
Illinois. A Tornado Watch also remains in effect until 200 AM CST for
south central, central and east central Illinois.

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

&&

LAT...LON 3922 8914 3935 8914 3935 8922 3972 8907
      3992 8847 3922 8848 3921 8857
TIME...MOT...LOC 0329Z 252DEG 42KT 3975 8894 3945 8909 

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

$$

Shimon
701 
WWUS53 KILX 110346
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
946 PM CST Fri Dec 10 2021

ILC021-110356-
/O.CAN.KILX.SV.W.0125.000000T0000Z-211211T0415Z/
Christian-
946 PM CST Fri Dec 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHRISTIAN 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 200 AM CST for south central,
central and east central Illinois.

LAT...LON 3922 8914 3937 8898 3949 8893 3981 8879
      3992 8847 3922 8848 3921 8857
TIME...MOT...LOC 0346Z 240DEG 47KT 3983 8869 3957 8884 

$$

ILC115-139-147-173-110415-
/O.CON.KILX.SV.W.0125.000000T0000Z-211211T0415Z/
Moultrie-Shelby-Piatt-Macon-
946 PM CST Fri Dec 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CST
FOR MOULTRIE...SHELBY...SOUTHERN PIATT AND SOUTHEASTERN MACON
COUNTIES...

At 946 PM CST, severe thunderstorms were located along a line
extending from near Cerro Gordo to near Findlay, moving northeast at
55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Shelbyville, Sullivan, Arthur, Bethany, Lovington, Windsor,
Stewardson, Findlay, Cowden, Tower Hill, Dalton City, Hammond,
Allenville, Westervelt, Strasburg, Herrick, Clarksburg, Sigel, Gays
and Wolf Creek State Park.

This includes Interstate 57 between mile markers 169 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CST for south central,
central and east central Illinois.

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

&&

LAT...LON 3922 8914 3937 8898 3949 8893 3981 8879
      3992 8847 3922 8848 3921 8857
TIME...MOT...LOC 0346Z 240DEG 47KT 3983 8869 3957 8884 

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

$$

Shimon
817 
WWUS53 KILX 110405
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1005 PM CST Fri Dec 10 2021

ILC115-147-110415-
/O.CAN.KILX.SV.W.0125.000000T0000Z-211211T0415Z/
Piatt-Macon-
1005 PM CST Fri Dec 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PIATT AND
SOUTHEASTERN MACON COUNTIES 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 200 AM CST for south central,
central and east central Illinois.

LAT...LON 3922 8902 3937 8898 3940 8887 3979 8847
      3922 8848 3921 8857
TIME...MOT...LOC 0405Z 327DEG 34KT 3990 8843 3922 8884 

$$

ILC139-173-110415-
/O.CON.KILX.SV.W.0125.000000T0000Z-211211T0415Z/
Moultrie-Shelby-
1005 PM CST Fri Dec 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CST
FOR SOUTHEASTERN MOULTRIE AND SOUTHERN SHELBY COUNTIES...

At 1005 PM CST, severe thunderstorms were located along a line
extending from 7 miles north of Atwood to near Cowden, moving
southeast at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Shelbyville, Sullivan, Arthur, Windsor, Stewardson, Findlay, Cowden,
Allenville, Strasburg, Herrick, Clarksburg, Sigel, Gays, Trowbridge,
Wolf Creek State Park, Mode, Cadwell, Eagle Creek State Park and
Kirksville.

This includes Interstate 57 between mile markers 169 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CST for south central,
central and east central Illinois.

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

&&

LAT...LON 3922 8902 3937 8898 3940 8887 3979 8847
      3922 8848 3921 8857
TIME...MOT...LOC 0405Z 327DEG 34KT 3990 8843 3922 8884 

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

$$

37

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 7:15 PM CSTTornado WarningILXCass, Morgan, Scott45 min
Dec 10, 7:54 PM CSTTornado Warning Tornado observedILXCass, Mason, Menard40 min
Dec 10, 8:05 PM CSTTornado WarningILXMason, Tazewell40 min
Dec 10, 8:20 PM CSTSevere Thunderstorm WarningILXChristian, Sangamon40 min
Dec 10, 8:28 PM CSTTornado WarningILXLogan, Mason, Tazewell32 min
Dec 10, 8:32 PM CSTSevere Thunderstorm WarningILXLogan, Sangamon28 min
Dec 10, 8:38 PM CSTTornado WarningILXMcLean, Woodford22 min
Dec 10, 8:50 PM CSTTornado WarningILXMcLean12 min
Dec 10, 8:58 PM CSTSevere Thunderstorm WarningILXDeWitt, McLean, Macon, Moultrie, Piatt, Sangamon47 min
Dec 10, 9:23 PM CSTTornado Warning Tornado observedILXShelby36 min
Dec 10, 9:33 PM CSTSevere Thunderstorm WarningILXChampaign, Piatt, Vermilion42 min
Dec 10, 9:51 PM CSTSevere Thunderstorm WarningILXChampaign, Coles, Cumberland, Douglas, Moultrie, Piatt and 1 more54 min
Dec 10, 9:55 PM CSTTornado WarningILXColes, Douglas, Moultrie19 min
Dec 10, 9:58 PM CSTTornado Warning Tornado observedILXColes, Douglas, Moultrie32 min
Dec 10, 10:24 PM CSTSevere Thunderstorm WarningILXChampaign, Clark, Coles, Douglas, Edgar, Vermilion35 min
Dec 10, 10:26 PM CSTTornado Warning Tornado observedILXColes, Douglas, Edgar, Vermilion19 min
Dec 10, 10:56 PM CSTSevere Thunderstorm WarningILXColes, Cumberland, Effingham, Jasper, Moultrie, Shelby49 min
Dec 10, 11:40 PM CSTSevere Thunderstorm WarningILXClark, Coles, Crawford, Cumberland, Edgar, Effingham and 2 more65 min
Dec 11, 12:50 AM CSTSpecial Weather StatementILXLawrence40 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.