Alert archive / Illinois / Tornado Warnings in 2025
Tornado Warning 57, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 30, 2025, 4:36 PM CDT for Clinton County, Saint Clair County, Washington County, Illinois. It was in force for 39 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
- Apr 30, 2025, 4:36 PM CDT (21:36 UTC)
- Expired
- Apr 30, 2025, 5:15 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Clinton County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 21:38 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 |
|---|---|---|---|
| Apr 30, 5:05 PM CDT | HAIL 1 | 1 Sse Trenton, IL | |
| Apr 30, 5:20 PM CDT | HAIL 1 | 1 S Aviston, IL |
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, 9.6 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1539 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
526
WFUS53 KLSX 302136
TORLSX
ILC027-163-189-302215-
/O.NEW.KLSX.TO.W.0057.250430T2136Z-250430T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
436 PM CDT Wed Apr 30 2025
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southwestern Clinton County in south central Illinois...
Northwestern Washington County in south central Illinois...
Northeastern Saint Clair County in southwestern Illinois...
* Until 515 PM CDT.
* At 436 PM CDT, a severe thunderstorm capable of producing a
tornado was located near Mascoutah, moving northeast at 20 mph.
HAZARD...Tornado and half dollar 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 tornado will be near...
Shiloh around 440 PM CDT.
Mascoutah and O'Fallon around 445 PM CDT.
Other locations impacted by the tornado include Summerfield and
Damiansville.
This includes Interstate 64 in Illinois between exits 23 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from 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 3866 8976 3866 8965 3847 8950 3838 8974
3855 8988
TIME...MOT...LOC 2136Z 227DEG 18KT 3846 8985
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
$$
Jaja4 follow-up statements
109
WWUS53 KLSX 302142
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
442 PM CDT Wed Apr 30 2025
ILC027-163-189-302215-
/O.CON.KLSX.TO.W.0057.000000T0000Z-250430T2215Z/
Clinton IL-Saint Clair IL-Washington IL-
442 PM CDT Wed Apr 30 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHWESTERN CLINTON AND NORTHWESTERN WASHINGTON COUNTIES IN SOUTH
CENTRAL ILLINOIS AND NORTHEASTERN SAINT CLAIR COUNTY IN SOUTHWESTERN
ILLINOIS...
At 442 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Mascoutah, moving northeast at 20 mph.
HAZARD...Tornado and half dollar size hail. At 440 PM, spotters
reported quarter sized hail northeast of Freeburg.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
This tornado will be near...
Shiloh around 440 PM CDT.
Mascoutah and O'Fallon around 445 PM CDT.
Other locations impacted by the tornado include Summerfield and
Damiansville.
This includes Interstate 64 in Illinois between exits 23 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 3866 8976 3866 8965 3847 8950 3838 8974
3855 8988
TIME...MOT...LOC 2136Z 227DEG 18KT 3847 8984
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
$$
Jaja144
WWUS53 KLSX 302157
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
457 PM CDT Wed Apr 30 2025
ILC189-302207-
/O.CAN.KLSX.TO.W.0057.000000T0000Z-250430T2215Z/
Washington IL-
457 PM CDT Wed Apr 30 2025
...TORNADO WARNING IS CANCELLED FOR NORTHWESTERN WASHINGTON COUNTY
IN SOUTH CENTRAL ILLINOIS...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3843 8978 3855 8988 3866 8976 3866 8965
3847 8950 3847 8952 3848 8953 3848 8959
3847 8961 3846 8962 3846 8963 3845 8963
TIME...MOT...LOC 2142Z 227DEG 18KT 3849 8981
$$
ILC027-163-302215-
/O.CON.KLSX.TO.W.0057.000000T0000Z-250430T2215Z/
Clinton IL-Saint Clair IL-
457 PM CDT Wed Apr 30 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHWESTERN CLINTON AND NORTHEASTERN SAINT CLAIR COUNTIES...
At 457 PM CDT, a severe thunderstorm capable of producing a tornado
was located over New Baden, moving northeast at 25 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
This tornado will be near...
Shiloh around 440 PM CDT.
Mascoutah and O'Fallon around 445 PM CDT.
Other locations impacted by the tornado include Summerfield and
Damiansville.
This includes Interstate 64 in Illinois between exits 23 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 3843 8978 3855 8988 3866 8976 3866 8965
3847 8950 3847 8952 3848 8953 3848 8959
3847 8961 3846 8962 3846 8963 3845 8963
TIME...MOT...LOC 2142Z 229DEG 20KT 3848 8981
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Jaja810
WWUS53 KLSX 302206
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
506 PM CDT Wed Apr 30 2025
ILC027-163-302215-
/O.CON.KLSX.TO.W.0057.000000T0000Z-250430T2215Z/
Clinton IL-Saint Clair IL-
506 PM CDT Wed Apr 30 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHWESTERN CLINTON AND NORTHEASTERN SAINT CLAIR COUNTIES...
At 506 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Trenton, or over New Baden, moving northeast at 25
mph.
HAZARD...Tornado and half dollar 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.
Other locations impacted by the tornado include Summerfield and
Damiansville.
This includes Interstate 64 in Illinois between exits 27 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from 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 3866 8975 3866 8965 3850 8952 3847 8960
3847 8973 3857 8978
TIME...MOT...LOC 2157Z 229DEG 20KT 3854 8973
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
$$
Jaja385
WWUS53 KLSX 302216
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
516 PM CDT Wed Apr 30 2025
ILC027-163-302226-
/O.EXP.KLSX.TO.W.0057.000000T0000Z-250430T2215Z/
Clinton IL-Saint Clair IL-
516 PM CDT Wed Apr 30 2025
...TORNADO WARNING HAS EXPIRED FOR SOUTHWESTERN CLINTON AND
NORTHEASTERN SAINT CLAIR COUNTIES...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire. A Tornado Warning
still remains in effect for Clinton, Madison, and Bond counties.
A Tornado Watch remains in effect until 1000 PM CDT for portions of
south central and southwest Illinois.
&&
LAT...LON 3866 8975 3866 8965 3850 8952 3847 8960
3847 8973 3857 8978
TIME...MOT...LOC 2206Z 229DEG 20KT 3857 8968
$$
JajaThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 4:09 PM CDT | Tornado Warning | LSX | Saint Clair | 40 min |
| Apr 30, 5:12 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison | 48 min |
| Apr 30, 6:30 PM CDT | Tornado Warning | LSX | Fayette, Marion | 45 min |
Nearby
Tornado Warnings in Illinois, 2025Every tornado warning in 2025Tornadoes in 2025
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.