Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Lincoln, IL

May 6, 2021Clay County, Effingham County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 6, 2021, 3:22 PM CDT for Clay County, Effingham County, Illinois. It was in force for 36 min. 2 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
May 6, 2021, 3:22 PM CDT (20:22 UTC)
Expired
May 6, 2021, 3:58 PM CDT
In force
36 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Clay County, IL, Effingham County, IL

The radar

The Evansville,IN radar (KVWX), 88 km from the middle of the area, began a volume at 20:23 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
May 6, 3:30 PM CDTTORNADOMason, ILBRIEF TOUCHDOWN, BUT WAS CLOSE TO TOUCHING DOWN AGAIN.
May 6, 3:40 PM CDTFUNNEL CLOUD1 N Iola, ILUNABLE TO TELL IF IT WAS REACHING THE GROUND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 155 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.

520 
WUUS53 KILX 062022
SVRILX
ILC025-049-062130-
/O.NEW.KILX.SV.W.0024.210506T2022Z-210506T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
322 PM CDT Thu May 6 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Clay County in south central Illinois...
  Southwestern Effingham County in south central Illinois...

* Until 430 PM CDT.

* At 322 PM CDT, a severe thunderstorm was located over Edgewood, or
  14 miles southwest of Effingham, moving southeast at 35 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Flora, Louisville, Clay City, Watson, Edgewood, Xenia, Bible Grove,
  Iola, Sailor Springs, Mason, Oskaloosa and Hord.

This includes Interstate 57 between mile markers 143 and 151.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3861 8869 3891 8870 3892 8877 3895 8878
      3902 8856 3873 8826 3873 8829 3866 8827
      3863 8830 3860 8825
TIME...MOT...LOC 2022Z 317DEG 29KT 3894 8868 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

25
2 follow-up statements
265 
WWUS53 KILX 062047
SVSILX

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

ILC049-062056-
/O.CAN.KILX.SV.W.0024.000000T0000Z-210506T2130Z/
Effingham-
347 PM CDT Thu May 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN EFFINGHAM COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

LAT...LON 3861 8869 3884 8870 3892 8857 3891 8845
      3873 8826 3873 8829 3866 8827 3863 8830
      3860 8825
TIME...MOT...LOC 2046Z 318DEG 25KT 3887 8850 

$$

ILC025-062130-
/O.CON.KILX.SV.W.0024.000000T0000Z-210506T2130Z/
Clay-
347 PM CDT Thu May 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR CLAY COUNTY...

At 346 PM CDT, a severe thunderstorm was located near Bible Grove, or
14 miles north of Flora, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated. At 340 PM trained weather spotters 
         reported a funnel cloud near Hord.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Flora, Louisville, Clay City, Xenia, Bible Grove, Iola, Sailor
Springs, Oskaloosa and Hord.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3861 8869 3884 8870 3892 8857 3891 8845
      3873 8826 3873 8829 3866 8827 3863 8830
      3860 8825
TIME...MOT...LOC 2046Z 318DEG 25KT 3887 8850 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

25
266 
WWUS53 KILX 062058
SVSILX

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

ILC025-062108-
/O.CAN.KILX.SV.W.0024.000000T0000Z-210506T2130Z/
Clay-
358 PM CDT Thu May 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR CLAY COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

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

LAT...LON 3861 8869 3884 8870 3892 8857 3891 8845
      3873 8826 3873 8829 3866 8827 3863 8830
      3860 8825
TIME...MOT...LOC 2056Z 317DEG 29KT 3880 8841 

$$

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, 2:17 PM CDTTornado Warning Tornado observedILXChristian, Shelby28 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, 4:39 PM CDTSpecial Weather StatementILXClay36 min
May 6, 4:46 PM CDTTornado WarningILXClay14 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.