Alert archive / Illinois / Tornado Warnings in 2026
Tornado Warning 7, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Mar 15, 2026, 5:05 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 34 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 15, 2026, 5:05 PM CDT (22:05 UTC)
- Expired
- Mar 15, 2026, 5:39 PM CDT
- In force
- 34 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 60 km from the middle of the area, began a volume at 22:09 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 15, 5:14 PM CDT | FUNNEL CLOUD | 2 W Collinsville, IL | Rotating funnel cloud at I-55/70 intersection with I-255 looking west toward Granite City. |
| Mar 15, 5:17 PM CDT | TSTM WND GST 60 | 2 Wnw Collinsville, IL | Corrects previous tstm wnd gst report from 2 WNW Collinsville. TV meteorologist noted several gusts over 60 mph in his Storm Runner vehicle. |
| Mar 15, 5:17 PM CDT | TSTM WND GST 60 | 2 Wnw Collinsville, IL | TV meteorologist noted several gusts over 60 mph in his Storm Runner vehicle. |
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 15, 1:33 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 202 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
- 1382 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 410 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
791
WFUS53 KLSX 152205
TORLSX
ILC119-163-152245-
/O.NEW.KLSX.TO.W.0007.260315T2205Z-260315T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
505 PM CDT Sun Mar 15 2026
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southern Madison County in southwestern Illinois...
Northern Saint Clair County in southwestern Illinois...
* Until 545 PM CDT.
* At 505 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Madison, moving east 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.
* Locations impacted include...
Cahokia, East St. Louis, Centreville, Granite City, Belleville,
Caseyville, Pontoon Beach, Fairview Heights, Collinsville,
Edwardsville, Swansea, Shiloh, Maryville, Glen Carbon, Troy,
O'Fallon, Mascoutah, Lebanon and Highland.
This includes the following State Parks...
Horseshoe Lake State Park.
This includes the following highways...
Interstate 64 in Illinois between exits 9 and 23. Interstate 55 in
Illinois near exit 23. Interstate 70 in Illinois between exits 21 and
30.
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 3852 9026 3855 9025 3860 9019 3863 9018
3867 9018 3870 9021 3873 9021 3877 9017
3880 9012 3890 8964 3888 8964 3887 8960
3866 8960 3866 8971 3854 8971
TIME...MOT...LOC 2205Z 259DEG 37KT 3868 9016
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kimble2 follow-up statements
950
WWUS53 KLSX 152222
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
522 PM CDT Sun Mar 15 2026
ILC119-163-152245-
/O.CON.KLSX.TO.W.0007.000000T0000Z-260315T2245Z/
Madison IL-Saint Clair IL-
522 PM CDT Sun Mar 15 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHEASTERN MADISON AND NORTHEASTERN SAINT CLAIR COUNTIES IN
SOUTHWESTERN ILLINOIS...
At 522 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Troy, moving east at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
Locations impacted include...
East St. Louis, Centreville, Belleville, Pontoon Beach, Caseyville,
Fairview Heights, Swansea, Collinsville, Shiloh, Maryville, Glen
Carbon, Scott AFB, O'Fallon, Edwardsville, Troy, Mascoutah, Lebanon
and Highland.
This includes the following highways...
Interstate 64 in Illinois between exits 9 and 23. Interstate 55 in
Illinois near exit 23. Interstate 70 in Illinois between exits 21 and
30.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 3853 9012 3882 9001 3890 8964 3888 8964
3887 8962 3887 8960 3866 8960 3866 8971
3854 8971
TIME...MOT...LOC 2205Z 250DEG 45KT 3869 9016
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kimble174
WWUS53 KLSX 152239
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
539 PM CDT Sun Mar 15 2026
ILC119-163-152249-
/O.CAN.KLSX.TO.W.0007.000000T0000Z-260315T2245Z/
Madison IL-Saint Clair IL-
539 PM CDT Sun Mar 15 2026
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN MADISON AND
NORTHEASTERN SAINT CLAIR COUNTIES IN SOUTHWESTERN ILLINOIS...
The storm which prompted the warning has weakened, and no longer
appears capable of producing a tornado. Therefore, the warning has
been cancelled. However, gusty winds are still possible with this
thunderstorm.
&&
LAT...LON 3853 9012 3882 9001 3890 8964 3888 8964
3887 8962 3887 8960 3866 8960 3866 8971
3854 8971
TIME...MOT...LOC 2222Z 250DEG 45KT 3876 8990
$$
KimbleThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 2:37 PM CDT | Winter Weather Advisory | LSX | Adams, Brown, Pike | 16 hr |
| Mar 15, 3:40 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 35 min |
| Mar 15, 3:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 46 min |
| Mar 15, 3:56 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey | 58 min |
| Mar 15, 3:59 PM CDT | Tornado Warning | LSX | Calhoun, Jersey | 33 min |
| Mar 15, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 44 min |
| Mar 15, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 36 min |
| Mar 15, 5:19 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 47 min |
| Mar 15, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 47 min |
| Mar 15, 5:31 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Montgomery | 44 min |
| Mar 15, 5:34 PM CDT | Tornado Warning | LSX | Monroe, Randolph, Saint Clair | 34 min |
| Mar 15, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 54 min |
| Mar 15, 5:54 PM CDT | Tornado Warning | LSX | Clinton, Washington | 37 min |
| Mar 15, 6:23 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 58 min |
Nearby
Tornado Warnings in Illinois, 2026Every tornado warning in 2026Tornadoes in 2026
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.