Alert archive / Missouri / Tornado Warnings in 2026
Tornado Warning 21, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 17, 2026, 8:30 PM CDT for Callaway County, Cole County, Osage County, Missouri. It was in force for 45 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
- Apr 17, 2026, 8:30 PM CDT (01:30 UTC)
- Expired
- Apr 17, 2026, 9:15 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Callaway County, MO, Cole County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 118 km from the middle of the area, began a volume at 01:33 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 17, 3:31 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 1.5 hours before the alert went out and 235 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
- 404 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 1486 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 418 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 6.6
The text
As transmitted.
668
WFUS53 KLSX 180130
TORLSX
MOC027-051-151-180215-
/O.NEW.KLSX.TO.W.0021.260418T0130Z-260418T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
830 PM CDT Fri Apr 17 2026
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Callaway County in central Missouri...
Southeastern Cole County in central Missouri...
Osage County in central Missouri...
* Until 915 PM CDT.
* At 830 PM CDT, severe thunderstorms capable of producing a tornado
were located along a line from near Taos to 8 miles south of St.
Thomas, or along a line from near Jefferson City to 22 miles south
of Jefferson City, 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.
* This tornado will be near...
Taos, Jefferson City, Wardsville and St. Thomas around 835 PM CDT.
Westphalia around 840 PM CDT.
Freeburg around 845 PM CDT.
Other locations impacted by the tornado include Osage City, Schubert,
Wainwright, Meta, Osage Bend, Bonnots Mill, Argyle, Loose Creek,
Koeltztown and Tebbetts.
This includes the following State Parks...
Clarks Hill/Norton Historic Site.
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.
Tornadoes are difficult to observe at night. Take cover now!
&&
LAT...LON 3833 9227 3842 9224 3852 9223 3881 9164
3871 9165 3870 9165 3870 9164 3829 9164
3829 9220 3834 9219 3833 9223 3832 9225
TIME...MOT...LOC 0130Z 262DEG 40KT 3856 9211 3845 9211 3825 9217
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
$$
Elmore3 follow-up statements
054
WWUS53 KLSX 180149
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
849 PM CDT Fri Apr 17 2026
MOC051-180159-
/O.CAN.KLSX.TO.W.0021.000000T0000Z-260418T0215Z/
Cole MO-
849 PM CDT Fri Apr 17 2026
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN COLE COUNTY...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CDT Friday for a
portion of central Missouri.
&&
LAT...LON 3856 9204 3859 9209 3881 9164 3876 9165
3870 9165 3870 9164 3829 9164 3829 9203
3838 9198 3854 9200 3855 9202 3856 9202
3856 9200 3857 9201
TIME...MOT...LOC 0130Z 262DEG 40KT 3856 9211 3845 9211 3825 9217
$$
MOC027-151-180215-
/O.CON.KLSX.TO.W.0021.000000T0000Z-260418T0215Z/
Callaway MO-Osage MO-
849 PM CDT Fri Apr 17 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHEASTERN CALLAWAY AND OSAGE COUNTIES...
At 849 PM CDT, severe thunderstorms capable of producing a tornado
were located along a line from over Chamois to near Freeburg, or
along a line from 15 miles north of Linn to 11 miles south of Linn,
moving east at 55 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 tornado will be near...
Chamois, Linn, Rich Fountain and Freeburg around 850 PM CDT.
Bland around 900 PM CDT.
Other locations impacted by the tornado include Steedman, Mokane,
Frankenstein, Portland and Morrison.
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.
Tornadoes are difficult to observe at night. Take cover now!
&&
LAT...LON 3856 9204 3859 9209 3881 9164 3876 9165
3870 9165 3870 9164 3829 9164 3829 9203
3838 9198 3854 9200 3855 9202 3856 9202
3856 9200 3857 9201
TIME...MOT...LOC 0130Z 257DEG 47KT 3863 9209 3846 9209 3826 9215
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
$$
BRC372
WWUS53 KLSX 180203
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
903 PM CDT Fri Apr 17 2026
MOC027-151-180215-
/O.CON.KLSX.TO.W.0021.000000T0000Z-260418T0215Z/
Callaway MO-Osage MO-
903 PM CDT Fri Apr 17 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR EAST
CENTRAL CALLAWAY AND NORTHEASTERN OSAGE COUNTIES...
At 903 PM CDT, severe thunderstorms capable of producing a tornado
were located along a line from 8 miles northeast of Chamois to 5
miles south of Chamois, or along a line from 13 miles west of Hermann
to 9 miles northeast of Linn, moving east at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Chamois around 905 PM CDT.
Other locations impacted by the tornado include Portland and
Morrison.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
Tornadoes are difficult to observe at night. Take cover now!
&&
LAT...LON 3863 9185 3868 9184 3881 9164 3879 9164
3876 9165 3870 9165 3870 9164 3860 9164
3860 9174 3861 9183
TIME...MOT...LOC 0149Z 257DEG 47KT 3872 9189 3862 9195 3856 9201
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
$$
BRC459
WWUS53 KLSX 180211
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
911 PM CDT Fri Apr 17 2026
MOC027-151-180221-
/O.EXP.KLSX.TO.W.0021.000000T0000Z-260418T0215Z/
Callaway MO-Osage MO-
911 PM CDT Fri Apr 17 2026
...TORNADO WARNING WILL EXPIRE AT 915 PM CDT FOR EAST CENTRAL
CALLAWAY AND NORTHEASTERN OSAGE COUNTIES...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
central Missouri.
&&
LAT...LON 3863 9185 3868 9184 3881 9164 3879 9164
3876 9165 3870 9165 3870 9164 3860 9164
3860 9174 3861 9183
TIME...MOT...LOC 0203Z 257DEG 47KT 3876 9166 3866 9172 3860 9178
$$
BRCThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 7:21 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Monroe, Pike, Ralls | 54 min |
| Apr 17, 7:42 PM CDT | Tornado Warning | LSX | Boone, Callaway, Cole, Moniteau | 48 min |
| Apr 17, 7:57 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 63 min |
| Apr 17, 8:17 PM CDT | Tornado Warning | LSX | Boone, Callaway, Cole, Moniteau | 43 min |
| Apr 17, 8:45 PM CDT | Tornado Warning | LSX | Audrain, Callaway, Montgomery | 45 min |
| Apr 17, 8:57 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Franklin, Gasconade, Montgomery, Osage, Warren | 48 min |
| Apr 17, 9:23 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 52 min |
| Apr 17, 9:29 PM CDT | Tornado Warning | LSX | Lincoln, Montgomery, Warren | 31 min |
| Apr 17, 9:36 PM CDT | Tornado Warning | LSX | Warren | 20 min |
| Apr 17, 9:42 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 48 min |
| Apr 17, 9:50 PM CDT | Tornado Warning | LSX | Lincoln | 25 min |
| Apr 17, 10:02 PM CDT | River Flood Warning | LSX | Lewis | 12 days |
| Apr 17, 10:14 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 31 min |
| Apr 18, 12:52 AM CDT | River Flood Warning | LSX | Lewis | 11 hr |
| Apr 18, 6:04 AM CDT | River Flood Warning | LSX | Osage | 15 hr |
| Apr 18, 9:59 AM CDT | River Flood Warning | LSX | Marion | 10 hr |
| Apr 18, 10:49 AM CDT | River Flood Warning | LSX | Cole | 63 hr |
| Apr 18, 12:05 PM CDT | River Flood Warning | LSX | Marion | 21 days |
| Apr 18, 12:05 PM CDT | River Flood Warning | LSX | Marion | 9 hr |
| Apr 18, 5:05 PM CDT | River Flood Warning | LSX | Reynolds | 16 hr |
Nearby
Tornado Warnings in Missouri, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.