Alert archive / Illinois / Tornado Warnings in 2023

Tornado Warning 5, NWS St. Louis, MO

March 31, 2023Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this tornado warning at Mar 31, 2023, 4:35 PM CDT for Adams County, Brown County, Pike County, Illinois. It was in force for 40 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
Mar 31, 2023, 4:35 PM CDT (21:35 UTC)
Expired
Mar 31, 2023, 5:15 PM CDT
In force
40 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.5 in

Counties Adams County, IL, Brown County, IL, Pike County, IL

The radar

The Lincoln radar (KILX), 112 km from the middle of the area, began a volume at 21:39 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
Mar 31, 4:38 PM CDTHAIL 0.52 W Buckhorn, ILREPORT FROM MPING: HALF-INCH (0.50 IN.).
Mar 31, 4:48 PM CDTTSTM WND DMG3 W Versailles, ILDELAYED REPORT, TIME ESTIMATED FROM RADAR. OPEN SIDED CAR PORT FLIPPED OVER.
Mar 31, 4:48 PM CDTTSTM WND DMG5 W Versailles, ILDELAYED REPORT. MINOR ROOF DAMAGE TO SHINGLED AND METAL PANEL ROOF. TIME ESTIMATED FROM RADAR.
Mar 31, 4:50 PM CDTHAIL 25 W Versailles, ILDELAYED REPORT, TIME ESTIMATED FROM RADAR.
Mar 31, 4:51 PM CDTHAIL 1.25Mount Sterling, ILDELAYED REPORT.
Mar 31, 4:52 PM CDTHAIL 1.754 E Buckhorn, IL
Mar 31, 4:53 PM CDTHAIL 23 Nw Versailles, ILCORRECTS PREVIOUS HAIL REPORT FROM 3 NW VERSAILLES. DELAYED REPORT, TIME ESTIMATED FROM RADAR.
Mar 31, 4:53 PM CDTHAIL 2Mount Sterling, ILCORRECTS PREVIOUS HAIL REPORT FROM MOUNT STERLING. DELAYED REPORT, TIME ESTIMATED FROM RADAR.
Mar 31, 4:55 PM CDTHAIL 1.75Mount Sterling, IL

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
Mar 31, 11:46 AM CDTTornado Watch PDSSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.6 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2023-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2023-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 646 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1009 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
646 m²/s²
0-3 km storm-relative helicity
712 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

503 
WFUS53 KLSX 312135
TORLSX
ILC001-009-149-312215-
/O.NEW.KLSX.TO.W.0005.230331T2135Z-230331T2215Z/

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

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northeastern Pike County in west central Illinois...
  East central Adams County in west central Illinois...
  Brown County in west central Illinois...

* Until 515 PM CDT.
    
* At 434 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Beverly, moving northeast at 50 mph.

  HAZARD...Tornado and ping pong ball 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...
  Buckhorn around 450 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Mount Sterling.

This also includes Siloam Springs 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 4002 9063 4003 9061 4001 9062 4000 9060
      3998 9060 3998 9051 3997 9051 3995 9053
      3992 9054 3988 9058 3983 9057 3974 9087
      3991 9101 4005 9068
TIME...MOT...LOC 2134Z 243DEG 36KT 3981 9096 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Elmore
3 follow-up statements
736 
WWUS53 KLSX 312146
SVSLSX

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

ILC001-149-312155-
/O.CAN.KLSX.TO.W.0005.000000T0000Z-230331T2215Z/
Pike IL-Adams IL-
446 PM CDT Fri Mar 31 2023

...THE TORNADO WARNING FOR NORTHEASTERN PIKE AND EAST CENTRAL ADAMS
COUNTIES IN WEST CENTRAL ILLINOIS 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 800 PM CDT for west central
Illinois.

LAT...LON 4002 9063 4003 9061 4001 9062 4000 9060
      3998 9060 3998 9051 3997 9051 3995 9053
      3992 9054 3988 9058 3984 9058 3985 9092
      3995 9091 4005 9068
TIME...MOT...LOC 2145Z 243DEG 36KT 3986 9082 

$$

ILC009-312215-
/O.CON.KLSX.TO.W.0005.000000T0000Z-230331T2215Z/
Brown IL-
446 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR BROWN
COUNTY...
    
At 445 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Buckhorn, moving northeast at 40 mph.

HAZARD...Tornado and three inch hail.

SOURCE...Radar indicated rotation. Spotters reported 3 inch hail 
         south of Liberty. 

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...
  Mount Sterling around 455 PM CDT.

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 4002 9063 4003 9061 4001 9062 4000 9060
      3998 9060 3998 9051 3997 9051 3995 9053
      3992 9054 3988 9058 3984 9058 3985 9092
      3995 9091 4005 9068
TIME...MOT...LOC 2145Z 243DEG 36KT 3986 9082 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...3.00 IN

$$

Elmore
402 
WWUS53 KLSX 312158
SVSLSX

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

ILC009-312215-
/O.CON.KLSX.TO.W.0005.000000T0000Z-230331T2215Z/
Brown IL-
458 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR EASTERN
BROWN COUNTY...
    
At 457 PM CDT, a confirmed tornado was located near Mount Sterling,
moving northeast at 40 mph.

HAZARD...Damaging tornado and ping pong ball size hail.

SOURCE...Weather spotters 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 tornadic thunderstorm will remain over mainly rural areas of
eastern Brown County, including the following locations...
Versailles, Coopertown, La Grange and Ripley.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4002 9063 4003 9061 4001 9062 4000 9060
      3998 9060 3998 9051 3997 9051 3995 9053
      3992 9054 3988 9058 3984 9058 3985 9075
      4000 9079 4005 9068
TIME...MOT...LOC 2157Z 243DEG 36KT 3992 9067 

TORNADO...OBSERVED
MAX HAIL SIZE...1.50 IN

$$

Elmore
240 
WWUS53 KLSX 312210
SVSLSX

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

ILC009-312220-
/O.EXP.KLSX.TO.W.0005.000000T0000Z-230331T2215Z/
Brown IL-
510 PM CDT Fri Mar 31 2023

...THE TORNADO WARNING FOR EASTERN BROWN COUNTY WILL EXPIRE AT 515 PM
CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois.

LAT...LON 4002 9063 4003 9061 4001 9062 4000 9060
      3998 9060 3998 9051 3997 9051 3995 9053
      3992 9054 3988 9058 3984 9058 3985 9075
      4000 9079 4005 9068
TIME...MOT...LOC 2210Z 243DEG 36KT 3998 9052 

$$

Elmore

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 12:40 PM CDTSevere Thunderstorm WarningLSXAdams, Pike50 min
Mar 31, 1:15 PM CDTSevere Thunderstorm WarningLSXBrown23 min
Mar 31, 3:49 PM CDTSevere Thunderstorm WarningLSXAdams, Pike41 min
Mar 31, 4:02 PM CDTTornado WarningLSXAdams, Pike43 min
Mar 31, 4:27 PM CDTSevere Thunderstorm WarningLSXAdams, Pike33 min
Mar 31, 4:41 PM CDTSevere Thunderstorm WarningLSXCalhoun, Pike34 min
Mar 31, 5:05 PM CDTTornado WarningLSXCalhoun, Greene, Jersey40 min
Mar 31, 5:09 PM CDTSevere Thunderstorm WarningLSXCalhoun, Greene, Pike51 min
Mar 31, 5:40 PM CDTHigh Wind WarningLSXAdams, Brown, Pike3 hr
Mar 31, 6:24 PM CDTSevere Thunderstorm WarningLSXMonroe23 min
Mar 31, 6:28 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Madison, Saint Clair47 min

Nearby

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