Alert archive / Illinois / Tornado Warnings in 2019

Tornado Warning 17, NWS St. Louis, MO

May 21, 2019Madison County, Saint Clair County, Illinois

NWS St. Louis, MO issued this tornado warning at May 21, 2019, 7:08 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 37 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
May 21, 2019, 7:08 PM CDT (00:08 UTC)
Expired
May 21, 2019, 7:45 PM CDT
In force
37 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Madison County, IL, Saint Clair County, IL

The radar

The St Louis radar (KLSX), 54 km from the middle of the area, began a volume at 00:10 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

TimeReportWhereRemark
May 21, 7:21 PM CDTTSTM WND DMG1 W Fairview Heights, ILTREES ON TWO HOUSES HOUSE ALONG WILSHIRE DRIVE.
May 21, 7:37 PM CDTTSTM WND DMG2 Ene Edwardsville, ILSEVERAL LARGE TREE LIMBS WERE BLOWN DOWN.
May 21, 7:40 PM CDTHAIL 0.25Caseyville, 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
May 21, 3:10 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 205 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 2019-05-22Temperature 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 00:00Z on 2019-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 466 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
466 m²/s²
0-3 km storm-relative helicity
506 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

508 
WFUS53 KLSX 220008
TORLSX
ILC119-163-220045-
/O.NEW.KLSX.TO.W.0017.190522T0008Z-190522T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
708 PM CDT Tue May 21 2019

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Southeastern Madison County in southwestern Illinois...
  North central St. Clair County in southwestern Illinois...

* Until 745 PM CDT.
    
* At 708 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Madison, moving northeast at 45 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...
  Collinsville around 715 PM CDT.
  Maryville and South Roxana around 720 PM CDT.
  Edwardsville and Troy around 725 PM CDT.
  Glen Carbon around 730 PM CDT.
  Marine around 735 PM CDT.
  Highland around 740 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Kaufman, Kuhn, Poag, Fruit, Mitchell and Hamel.

This also includes Horseshoe Lake State Park.
 
This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 24.
 Interstate 55 in Illinois between exits 23 and 30.
 Interstate 64 in Illinois between exits 9 and 14.

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 3855 9001 3866 9012 3866 9018 3868 9019
      3869 9020 3871 9021 3872 9020 3893 8981
      3876 8964
TIME...MOT...LOC 0008Z 236DEG 40KT 3869 9013 

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

$$

BSH
2 follow-up statements
249 
WWUS53 KLSX 220027 RRA
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
727 PM CDT Tue May 21 2019

ILC119-163-220045-
/O.CON.KLSX.TO.W.0017.000000T0000Z-190522T0045Z/
Madison IL-St. Clair IL-
727 PM CDT Tue May 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR EASTERN
MADISON AND NORTH CENTRAL ST. CLAIR COUNTIES IN SOUTHWESTERN
ILLINOIS...
    
At 727 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Edwardsville, moving northeast at 45 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...
  Highland around 740 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Kaufman, Kuhn, Poag, Fruit and Hamel.

This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 24.
 Interstate 55 in Illinois between exits 23 and 30.
 Interstate 64 in Illinois between exits 12 and 14.

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 8999 3880 9005 3893 8981 3876 8964
TIME...MOT...LOC 0027Z 236DEG 40KT 3881 8990 

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

$$

BSH
751 
WWUS53 KLSX 220039 RRA
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
739 PM CDT Tue May 21 2019

ILC163-220049-
/O.CAN.KLSX.TO.W.0017.000000T0000Z-190522T0045Z/
St. Clair IL-
739 PM CDT Tue May 21 2019

...THE TORNADO WARNING FOR NORTH CENTRAL ST. CLAIR COUNTY 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 1000 PM CDT for southwestern
Illinois.

LAT...LON 3865 8983 3866 8985 3887 8991 3893 8981
      3876 8964
TIME...MOT...LOC 0039Z 236DEG 40KT 3889 8975 

$$

ILC119-220045-
/O.CON.KLSX.TO.W.0017.000000T0000Z-190522T0045Z/
Madison IL-
739 PM CDT Tue May 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR EASTERN
MADISON COUNTY IN SOUTHWESTERN ILLINOIS...
    
At 739 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Alhambra, moving northeast at 45 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
eastern Madison County in southwestern Illinois, including the
following locations... Kaufman, Kuhn, Fruit and Hamel.

This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 24.
 Interstate 55 in Illinois near exit 30.

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 3865 8983 3866 8985 3887 8991 3893 8981
      3876 8964
TIME...MOT...LOC 0039Z 236DEG 40KT 3889 8975 

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

$$

BSH

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:36 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Macoupin, Madison, Montgomery39 min
May 21, 7:46 PM CDTTornado WarningLSXBond, Madison29 min
May 21, 7:56 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Marion, Saint Clair, Washington53 min
May 21, 8:08 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Fayette, Montgomery52 min
May 21, 8:27 PM CDTTornado WarningLSXBond, Clinton, Fayette, Marion21 min
May 21, 8:45 PM CDTSevere Thunderstorm WarningLSXClinton, Fayette, Marion, Montgomery45 min
May 22, 9:36 AM CDTRiver Flood WarningLSXBrown14 days
May 22, 9:52 AM CDTRiver Flood WarningLSXFayette4 days
May 22, 1:53 PM CDTFlash Flood WatchLSXAdams14 hr

Nearby

Tornado Warnings in Illinois, 2019Every tornado warning in 2019Tornadoes in 2019

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.