Alert archive / Illinois / Tornado Warnings in 2023

Tornado Warning 10, NWS St. Louis, MO

March 31, 2023Marion County, Illinois

NWS St. Louis, MO issued this tornado warning at Mar 31, 2023, 8:08 PM CDT for Marion County, Illinois. It was in force for 22 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: Mar 31, 2023, 8:08 PM CDT (01:08 UTC)
Expired: Mar 31, 2023, 8:30 PM CDT
In force: 22 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Marion County, IL

The radar

The Evansville,IN radar (KVWX), 115 km from the middle of the area, began a volume at 01:10 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

Time	Report	Where	Remark
Mar 31, 8:11 PM CDT	TORNADO	1 Sse Salem, IL	EF1 TORNADO, 5.96 MILE PATH LENGTH, MAX PATH WIDTH 250 YARDS. FROM 811 PM TO 818 PM, 3.3 MILES WSW OF SALEM, IL TO 2.7 MILES EAST OF SALEM, IL.
Mar 31, 8:14 PM CDT	TSTM WND GST 73	1 Sse Alma, IL	DELAYED REPORT. TIME ESTIMATED FROM RADAR.
Mar 31, 8:30 PM CDT	TSTM WND DMG	1 Nne Patoka, IL	LARGE WEIGHTED PATIO TABLE BLOWN INTO TWO TRUCKS, DAMAGING THEM.

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.

Issued	Product	Office	Lasted
Mar 31, 12:28 PM CDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.1 hours before the alert went out and 174 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: 638 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 921 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 347 m²/s²
0-3 km storm-relative helicity: 369 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.1

Open this sounding in Storm Lab

The text

As transmitted.

906 
WFUS53 KLSX 010108
TORLSX
ILC121-010200-
/O.NEW.KLSX.TO.W.0010.230401T0108Z-230401T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
808 PM CDT Fri Mar 31 2023

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Marion County in south central Illinois...

* Until 900 PM CDT.
    
* At 808 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Odin, moving east at 50 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 dangerous storm will be near...
  Omega and Stephen Forbes Station around 825 PM CDT.

This includes Interstate 57 in Illinois between exits 109 and 127.
 
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 3850 8914 3876 8914 3879 8870 3852 8870
TIME...MOT...LOC 0108Z 263DEG 42KT 3859 8900 

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

$$

Glass

3 follow-up statements

444 
WWUS53 KLSX 010115
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
815 PM CDT Fri Mar 31 2023

ILC121-010200-
/O.CON.KLSX.TO.W.0010.000000T0000Z-230401T0200Z/
Marion IL-
815 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR CENTRAL
MARION COUNTY...
    
At 815 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Salem, moving east at 50 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 dangerous storm will be near...
  Omega and Stephen Forbes Station around 825 PM CDT.

This includes Interstate 57 in Illinois between exits 116 and 127.
 
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 3856 8907 3877 8897 3879 8870 3854 8870
TIME...MOT...LOC 0115Z 258DEG 42KT 3863 8890 

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

$$

Glass

194 
WWUS53 KLSX 010122
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
822 PM CDT Fri Mar 31 2023

ILC121-010200-
/O.CON.KLSX.TO.W.0010.000000T0000Z-230401T0200Z/
Marion IL-
822 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHEASTERN MARION COUNTY...
    
At 822 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Omega, moving east at 55 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
northeastern Marion County, including the following locations... Iuka
and Brubaker.

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 3860 8893 3877 8887 3879 8870 3862 8870
TIME...MOT...LOC 0122Z 259DEG 46KT 3867 8875 

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

$$

Glass

494 
WWUS53 KLSX 010130
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
830 PM CDT Fri Mar 31 2023

ILC121-010140-
/O.CAN.KLSX.TO.W.0010.000000T0000Z-230401T0200Z/
Marion IL-
830 PM CDT Fri Mar 31 2023

...THE TORNADO WARNING FOR NORTHEASTERN MARION 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 1000 PM CDT for south central
Illinois.

LAT...LON 3860 8893 3877 8887 3879 8870 3862 8870
TIME...MOT...LOC 0127Z 263DEG 42KT 3868 8863 

$$

Glass

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 7:36 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Macoupin, Madison, Monroe, Montgomery, Saint Clair	39 min
Mar 31, 7:38 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	52 min
Mar 31, 8:09 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Montgomery	35 min
Apr 1, 1:49 AM CDT	Wind Advisory	LSX	Randolph	11 hr

Nearby

Tornado Warnings in Illinois, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.