Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 56, NWS St. Louis, MO

December 10, 2021Bond County, Fayette County, Montgomery County, Illinois

NWS St. Louis, MO issued this tornado warning at Dec 10, 2021, 8:56 PM CST for Bond County, Fayette County, Montgomery County, Illinois. It was in force for 34 min. 9 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, 8:56 PM CST (02:56 UTC)
Expired
Dec 10, 2021, 9:30 PM CST
In force
34 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Bond County, IL, Fayette County, IL, Montgomery County, IL

The radar

The Lincoln radar (KILX), 120 km from the middle of the area, began a volume at 02:56 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, 9:05 PM CSTTSTM WND DMG4 S Coffeen, ILBOND COUNTY DISPATCH REPORTED A TREE DOWN ON MOUNT MORIAH AVENUE JUST WEST OF RED BALL TRAIL. TIME ESTIMATED FROM RADAR.
Dec 10, 9:05 PM CSTTORNADO3 Ssw Coffeen, ILTDS EVIDENT FROM KLSX.
Dec 10, 9:05 PM CSTTORNADO4 S Coffeen, ILCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 4 S COFFEEN. BOND COUNTY DISPATCH REPORTED A TREE DOWN ON MOUNT MORIAH AVENUE JUST WEST OF RED BALL TRAIL. TIME ESTIMATED FROM RADAR.
Dec 10, 9:06 PM CSTTSTM WND DMG1 Ese Coffeen, ILBOND COUNTY DISPATCH REPORTED TREE ON HWY 185 JUST SOUTH OF COFFEEN. TIME ESTIMATED FROM RADAR.
Dec 10, 9:06 PM CSTTORNADO1 Ese Coffeen, ILCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 ESE COFFEEN. BOND COUNTY DISPATCH REPORTED TREE ON HWY 185 JUST SOUTH OF COFFEEN. TIME ESTIMATED FROM RADAR.
Dec 10, 9:08 PM CSTTSTM WND DMG1 Ese Coffeen, ILMONTGOMERY COUNTY DISPATCH REPORTED TREE LIMBS IMPEDING TRAFFIC ALONG ILLINOIS ROUTE 185 NEAR ROCKY FORD ROAD AND ALONG HAPPY LANE AND MERRY LANE. TIME ESTIMATED FROM RADAR.
Dec 10, 9:08 PM CSTTORNADO1 Ese Coffeen, ILCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 ESE COFFEEN. MONTGOMERY COUNTY DISPATCH REPORTED TREE LIMBS IMPEDING TRAFFIC ALONG ILLINOIS ROUTE 185 NEAR ROCKY FORD ROAD AND ALONG HAPPY LANE AND MERRY LANE. TIME ESTIMATED FROM RADAR.
Dec 10, 9:19 PM CSTTSTM WND DMG1 Nw Ramsey, ILNUMEROUS LARGE TREE LIMBS AS WELL AS A COUPLE OF TREES SNAPPED OFF ON THE ENTRANCE WAY INTO RAMSEY LAKE STATE PARK.
Dec 10, 9:19 PM CSTTORNADO1 Nw Ramsey, ILCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 NW RAMSEY. NUMEROUS LARGE TREE LIMBS AS WELL AS A COUPLE OF TREES SNAPPED OFF ON THE ENTRANCE WAY INTO RAMSEY LAKE STATE PARK.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.9 hours before the alert went out and 137 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.

621 
WFUS53 KLSX 110256
TORLSX
ILC005-051-135-110345-
/O.NEW.KLSX.TO.W.0056.211211T0256Z-211211T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
856 PM CST Fri Dec 10 2021

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northern Bond County in south central Illinois...
  Northwestern Fayette County in south central Illinois...
  Southern Montgomery County in south central Illinois...

* Until 945 PM CST.
    
* At 855 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Sorento, moving northeast at 55 mph.

  HAZARD...Tornado and quarter size hail.

  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 dangerous storm will be near...
  Hillsboro and Taylor Springs around 905 PM CST.
  Coffeen and Van Burensburg around 910 PM CST.

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

This also includes Ramsey Lake State Park.
 
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 3888 8960 3895 8964 3900 8964 3900 8967
      3904 8969 3932 8914 3922 8914 3922 8881
      3918 8881
TIME...MOT...LOC 0255Z 240DEG 47KT 3900 8956 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

19
3 follow-up statements
026 
WWUS53 KLSX 110306
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
906 PM CST Fri Dec 10 2021

ILC005-051-135-110345-
/O.CON.KLSX.TO.W.0056.000000T0000Z-211211T0345Z/
Bond IL-Fayette IL-Montgomery IL-
906 PM CST Fri Dec 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR NORTHERN
BOND...NORTHWESTERN FAYETTE AND SOUTHERN MONTGOMERY COUNTIES...
        
At 906 PM CST, a confirmed tornado was located over Coffeen, moving
northeast at 60 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Radar 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...
  Van Burensburg around 910 PM CST.

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

This also includes Ramsey Lake State Park.
 
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 3888 8960 3895 8964 3900 8964 3900 8967
      3904 8969 3932 8914 3922 8914 3922 8881
      3918 8881
TIME...MOT...LOC 0306Z 241DEG 52KT 3907 8938 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

19
866 
WWUS53 KLSX 110318
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
918 PM CST Fri Dec 10 2021

ILC005-135-110327-
/O.CAN.KLSX.TO.W.0056.000000T0000Z-211211T0345Z/
Bond IL-Montgomery IL-
918 PM CST Fri Dec 10 2021

...THE TORNADO WARNING FOR NORTHERN BOND AND SOUTHERN MONTGOMERY
COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CST for south central
Illinois.

LAT...LON 3902 8925 3922 8925 3922 8881 3918 8881
TIME...MOT...LOC 0317Z 243DEG 48KT 3914 8920 

$$

ILC051-110345-
/O.CON.KLSX.TO.W.0056.000000T0000Z-211211T0345Z/
Fayette IL-
918 PM CST Fri Dec 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR
NORTHWESTERN FAYETTE COUNTY...
        
At 917 PM CST, a confirmed tornado was located near Ramsey, moving
northeast at 55 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Radar 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...
  Ramsey around 920 PM CST.

This also includes Ramsey Lake State Park.
 
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 3902 8925 3922 8925 3922 8881 3918 8881
TIME...MOT...LOC 0317Z 243DEG 48KT 3914 8920 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

19
682 
WWUS53 KLSX 110330
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
930 PM CST Fri Dec 10 2021

ILC051-110340-
/O.CAN.KLSX.TO.W.0056.000000T0000Z-211211T0345Z/
Fayette IL-
930 PM CST Fri Dec 10 2021

...THE TORNADO WARNING FOR NORTHWESTERN FAYETTE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CST for south central
Illinois.

LAT...LON 3902 8925 3922 8925 3922 8881 3918 8881
TIME...MOT...LOC 0328Z 240DEG 47KT 3922 8901 

$$

19

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 10, 6:42 PM CSTTornado WarningLSXPike48 min
Dec 10, 7:11 PM CSTTornado WarningLSXPike49 min
Dec 10, 7:16 PM CSTTornado WarningLSXPike14 min
Dec 10, 7:30 PM CSTTornado WarningLSXCalhoun, Greene, Jersey45 min
Dec 10, 7:35 PM CSTTornado Warning Tornado observedLSXCalhoun, Jersey40 min
Dec 10, 7:36 PM CSTTornado WarningLSXPike21 min
Dec 10, 8:06 PM CSTTornado Warning Tornado observedLSXJersey, Macoupin, Madison39 min
Dec 10, 8:33 PM CSTTornado Warning Tornado observedConsiderable damage threatLSXBond, Madison42 min
Dec 10, 8:37 PM CSTTornado WarningLSXMacoupin, Madison17 min
Dec 10, 8:44 PM CSTTornado Warning Tornado observedLSXFayette, Macoupin, Madison, Montgomery46 min
Dec 10, 9:07 PM CSTSevere Thunderstorm WarningLSXCalhoun38 min
Dec 10, 9:39 PM CSTTornado WarningLSXMacoupin, Madison51 min
Dec 10, 10:05 PM CSTSevere Thunderstorm WarningLSXMadison, Saint Clair25 min
Dec 10, 10:18 PM CSTSevere Thunderstorm WarningLSXBond, Fayette, Macoupin, Madison, Montgomery57 min
Dec 10, 10:19 PM CSTSevere Thunderstorm WarningLSXMonroe, Randolph, Saint Clair41 min
Dec 10, 10:26 PM CSTTornado WarningLSXBond, Fayette, Montgomery49 min
Dec 10, 10:51 PM CSTSevere Thunderstorm WarningLSXClinton, Saint Clair, Washington39 min
Dec 10, 11:02 PM CSTTornado WarningLSXFayette29 min
Dec 10, 11:10 PM CSTTornado WarningLSXClinton, Marion, Washington50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.