Alert archive / Missouri / Tornado Warnings in 2025
Tornado Warning 92, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Aug 9, 2025, 7:41 PM CDT for Lewis County, Missouri; Adams County, Illinois. It was in force for 14 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2025, 7:41 PM CDT (00:41 UTC)
- Expired
- Aug 9, 2025, 7:55 PM CDT
- In force
- 14 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Adams County, IL, Lewis County, MO
The radar
The St Louis radar (KLSX), 160 km from the middle of the area, began a volume at 00:41 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.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.7 hours before the alert went out and 190 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
- 2514 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1171 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
324
WFUS53 KLSX 100041
TORLSX
ILC001-MOC111-100130-
/O.NEW.KLSX.TO.W.0092.250810T0041Z-250810T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
741 PM CDT Sat Aug 9 2025
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Northwestern Adams County in west central Illinois...
Southeastern Lewis County in northeastern Missouri...
* Until 830 PM CDT.
* At 741 PM CDT, a severe thunderstorm capable of producing a
tornado was located near La Grange, or 9 miles south of Canton,
moving east at 25 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...
Quincy, Mendon, La Grange, Ursa, Loraine, Woodville, Coatsburg,
Columbus, Fowler and Paloma.
This includes the following State Parks...
Wakonda State Park.
This includes Interstate 172 near exit 19.
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.
Torrential rainfall is also occurring with this storm and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3995 9152 4006 9158 4020 9122 4020 9118
3997 9110 3995 9145
TIME...MOT...LOC 0041Z 251DEG 20KT 4000 9153
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kimble1 follow-up statement
547
WWUS53 KLSX 100055
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
755 PM CDT Sat Aug 9 2025
ILC001-MOC111-100105-
/O.CAN.KLSX.TO.W.0092.000000T0000Z-250810T0130Z/
Adams IL-Lewis MO-
755 PM CDT Sat Aug 9 2025
...TORNADO WARNING IS CANCELLED FOR NORTHWESTERN ADAMS AND
SOUTHEASTERN LEWIS COUNTIES...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with this thunderstorm.
&&
LAT...LON 3995 9152 4006 9158 4020 9122 4020 9118
3997 9110 3995 9145
TIME...MOT...LOC 0041Z 251DEG 20KT 4000 9153
$$
KimbleThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:15 PM CDT | Severe Thunderstorm Warning | LSX | Lewis, Marion | 30 min |
| Aug 10, 12:59 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade | 31 min |
| Aug 10, 2:11 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 17 min |
| Aug 10, 2:44 PM CDT | Areal Flood Advisory | LSX | Franklin, Jefferson, Saint Louis, Washington | 3 hr |
| Aug 10, 3:09 PM CDT | Areal Flood Advisory | LSX | City of Saint Louis | 2 hr |
| Aug 9, 7:26 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 35 min |
Nearby
Tornado Warnings in Missouri, 2025Tornado 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.