Alert archive / Missouri / Tornado Warnings in 2025
Tornado Warning 91, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Aug 9, 2025, 6:07 PM CDT for Knox County, Shelby County, Missouri. It was in force for 28 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
- Aug 9, 2025, 6:07 PM CDT (23:07 UTC)
- Expired
- Aug 9, 2025, 6:35 PM CDT
- In force
- 28 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Knox County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 194 km from the middle of the area, began a volume at 23:10 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 9, 6:20 PM CDT | TSTM WND DMG | Leonard, MO | E911 reported 4-inch branches down between Leonard and Hwy J just east of Hwy W. |
| Aug 9, 6:22 PM CDT | TORNADO | 1 Ene Leonard, MO | A brief EF-1 tornado struck a farm just northeast of Leonard, MO. |
| Aug 9, 6:23 PM CDT | TORNADO | 2 Ese Leonard, MO | A second EF-1 tornado struck to the east of Leonard, MO. |
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, 11.1 hours before the alert went out and 308 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
- 1123 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1242 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
302
WFUS53 KLSX 092307
TORLSX
MOC103-205-092345-
/O.NEW.KLSX.TO.W.0091.250809T2307Z-250809T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
607 PM CDT Sat Aug 9 2025
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southern Knox County in northeastern Missouri...
Northwestern Shelby County in northeastern Missouri...
* Until 645 PM CDT.
* At 607 PM CDT, a severe thunderstorm capable of producing a
tornado was located 7 miles northwest of Plevna, or 10 miles south
of Edina, moving east at 35 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...
Plevna, Novelty, Newark and Leonard.
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 4002 9234 4016 9195 3992 9195 3985 9229
3995 9229 3995 9234
TIME...MOT...LOC 2306Z 250DEG 30KT 4002 9221
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Kimble3 follow-up statements
073
WWUS53 KLSX 092324
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
624 PM CDT Sat Aug 9 2025
MOC103-205-092345-
/O.CON.KLSX.TO.W.0091.000000T0000Z-250809T2345Z/
Knox MO-Shelby MO-
624 PM CDT Sat Aug 9 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHEASTERN KNOX AND NORTHWESTERN SHELBY COUNTIES...
At 624 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Plevna, or 16 miles north of Shelbina, moving east
at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
Locations impacted include...
Plevna, Newark and Leonard.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Torrential rainfall is also occurring with this storm and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3997 9225 4006 9195 3992 9195 3986 9223
TIME...MOT...LOC 2307Z 263DEG 30KT 3991 9231
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Kimble362
WWUS53 KLSX 092330
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
630 PM CDT Sat Aug 9 2025
MOC103-205-092345-
/O.CON.KLSX.TO.W.0091.000000T0000Z-250809T2345Z/
Knox MO-Shelby MO-
630 PM CDT Sat Aug 9 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHEASTERN KNOX AND NORTH CENTRAL SHELBY COUNTIES...
At 630 PM CDT, a confirmed tornado was located near Plevna, or 16
miles north of Shelbina, moving east at 35 mph.
HAZARD...Damaging tornado and quarter size hail.
SOURCE...Public 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.
Locations impacted include...
Plevna and Newark.
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 9214 3998 9214 4004 9195 3992 9195
3988 9214
TIME...MOT...LOC 2324Z 263DEG 30KT 3992 9212
TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN
$$
Kimble391
WWUS53 KLSX 092335
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
635 PM CDT Sat Aug 9 2025
MOC103-205-092345-
/O.CAN.KLSX.TO.W.0091.000000T0000Z-250809T2345Z/
Knox MO-Shelby MO-
635 PM CDT Sat Aug 9 2025
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN KNOX AND NORTH
CENTRAL SHELBY COUNTIES...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and
a Severe Thunderstorm Warning remains in effect for the area.
However, gusty winds and heavy rain are still possible with this
thunderstorm.
&&
LAT...LON 3995 9214 3998 9214 4004 9195 3992 9195
3988 9214
TIME...MOT...LOC 2330Z 263DEG 30KT 3993 9205
$$
KimbleThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:00 PM CDT | Flood Watch | LSX | Knox, Lewis, Marion, Shelby | 23 hr |
| Aug 9, 5:35 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Shelby | 70 min |
| Aug 9, 6:15 PM CDT | Areal Flood Advisory | LSX | Knox | 2 hr |
| Aug 9, 6:23 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 22 min |
| Aug 9, 6:42 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Shelby | 48 min |
Nearby
Tornado Warnings in Missouri, 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.