Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 20, NWS Paducah, KY

October 24, 2021Jefferson County, Illinois

NWS Paducah, KY issued this tornado warning at Oct 24, 2021, 10:01 PM CDT for Jefferson County, Illinois. It was in force for 6 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 24, 2021, 10:01 PM CDT (03:01 UTC)
Expired: Oct 24, 2021, 10:07 PM CDT
In force: 6 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Jefferson County, IL

The radar

The Evansville,IN radar (KVWX), 116 km from the middle of the area, began a volume at 03:01 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 24, 5:44 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.0 hours before the alert went out and 192 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3 J/kg
Mixed-layer CIN: -286 J/kg
Mixed-layer LCL: 585 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 371 m²/s²
0-3 km storm-relative helicity: 467 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

956 
WFUS53 KPAH 250301
TORPAH
ILC081-250330-
/O.NEW.KPAH.TO.W.0020.211025T0301Z-211025T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Paducah KY
1001 PM CDT Sun Oct 24 2021

The National Weather Service in Paducah has issued a

* Tornado Warning for...
  Northwestern Jefferson County in south central Illinois...

* Until 1030 PM CDT.
    
* At 1001 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Irvington, or near Centralia, moving
  northeast at 35 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
  northwestern Jefferson County.

This includes Interstate 57 in Illinois near Mile Marker 105.
 
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 3847 8888 3841 8914 3842 8915 3847 8914
      3848 8897
TIME...MOT...LOC 0301Z 225DEG 32KT 3846 8914 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

DWS

1 follow-up statement

487 
WWUS53 KPAH 250307
SVSPAH

Severe Weather Statement
National Weather Service Paducah KY
1007 PM CDT Sun Oct 24 2021

ILC081-250317-
/O.CAN.KPAH.TO.W.0020.000000T0000Z-211025T0330Z/
Jefferson IL-
1007 PM CDT Sun Oct 24 2021

...THE TORNADO WARNING FOR NORTHWESTERN JEFFERSON 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 100 AM CDT for south central
Illinois.

LAT...LON 3847 8888 3841 8914 3842 8915 3847 8914
      3848 8897
TIME...MOT...LOC 0306Z 225DEG 32KT 3850 8909 

$$

DWS

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 24, 9:42 PM CDT	Severe Thunderstorm Warning	PAH	Jackson	48 min
Oct 24, 10:24 PM CDT	Special Weather Statement	PAH	Jackson	51 min
Oct 24, 11:34 PM CDT	Flash Flood Warning	PAH	Jackson	6 hr
Oct 24, 11:37 PM CDT	Severe Thunderstorm Warning	PAH	Alexander, Union	38 min
Oct 25, 12:33 AM CDT	Special Weather Statement	PAH	Massac	27 min

Nearby

Tornado Warnings in Illinois, 2021 Every tornado warning in 2021 Tornadoes 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.