Alert archive / Missouri / Tornado Warnings in 2026
Tornado Warning 52, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 27, 2026, 8:03 PM CDT for Sainte Genevieve County, Saint Francois County, Washington County, Missouri. It was in force for 29 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 27, 2026, 8:03 PM CDT (01:03 UTC)
- Expired
- Apr 27, 2026, 8:32 PM CDT
- In force
- 29 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 01:01 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 27, 8:35 PM CDT | TSTM WND GST 60 | Farmington, MO | |
| Apr 27, 8:40 PM CDT | HAIL 1.25 | Farmington, MO | Report from mPING: Half Dollar (1.25 in.). |
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 |
|---|---|---|---|
| Apr 27, 12:50 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 1.1 hours before the alert went out and 292 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
- 597 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1578 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- -47 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.1
The text
As transmitted.
492
WFUS53 KLSX 280103
TORLSX
MOC186-187-221-280145-
/O.NEW.KLSX.TO.W.0052.260428T0103Z-260428T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
803 PM CDT Mon Apr 27 2026
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Washington County in east central Missouri...
Southwestern Sainte Genevieve County in southeastern Missouri...
Western Saint Francois County in southeastern Missouri...
* Until 845 PM CDT.
* At 803 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Irondale, or 6 miles west of Bismarck, moving east
at 45 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...
Irondale around 805 PM CDT.
Bismarck around 810 PM CDT.
Leadwood around 815 PM CDT.
Other locations impacted by the tornado include Caledonia, Frankclay,
Leadington and Doe Run.
This includes the following State Parks...
St. Joe State Park, St. Francois State Park and Missouri Mines
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.
&&
LAT...LON 3774 9089 3783 9089 3800 9062 3800 9058
3803 9048 3772 9013 3773 9065 3774 9070
3774 9082 3773 9085 3774 9088
TIME...MOT...LOC 0102Z 266DEG 40KT 3779 9074
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Jaja3 follow-up statements
975
WWUS53 KLSX 280122
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
822 PM CDT Mon Apr 27 2026
MOC221-280132-
/O.CAN.KLSX.TO.W.0052.000000T0000Z-260428T0145Z/
Washington MO-
822 PM CDT Mon Apr 27 2026
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN WASHINGTON COUNTY IN
EAST CENTRAL MISSOURI...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for a portion of
east central Missouri.
&&
LAT...LON 3790 9064 3797 9042 3792 9037 3773 9015
3773 9065
TIME...MOT...LOC 0103Z 266DEG 40KT 3779 9073
$$
MOC186-187-280145-
/O.CON.KLSX.TO.W.0052.000000T0000Z-260428T0145Z/
Sainte Genevieve MO-Saint Francois MO-
822 PM CDT Mon Apr 27 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN SAINTE GENEVIEVE AND SOUTHWESTERN SAINT FRANCOIS
COUNTIES...
At 822 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Farmington, moving east at 45 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...
Farmington, Park Hills and Desloge around 825 PM CDT.
Other locations impacted by the tornado include Leadington and Doe
Run.
This includes the following State Parks...
St. Joe State Park and Missouri Mines 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.
&&
LAT...LON 3790 9064 3797 9042 3792 9037 3773 9015
3773 9065
TIME...MOT...LOC 0103Z 266DEG 40KT 3779 9073
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Jaja946
WWUS53 KLSX 280126 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
826 PM CDT Mon Apr 27 2026
MOC187-280136-
/O.CAN.KLSX.TO.W.0052.000000T0000Z-260428T0145Z/
Saint Francois MO-
826 PM CDT Mon Apr 27 2026
...TORNADO WARNING IS CANCELLED FOR SOUTHWESTERN SAINT FRANCOIS
COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for a portion of
southeast Missouri.
&&
LAT...LON 3793 9038 3792 9037 3783 9027 3780 9037
3781 9037 3781 9038 3783 9040 3788 9046
TIME...MOT...LOC 0122Z 266DEG 40KT 3781 9045
$$
MOC186-280145-
/O.CON.KLSX.TO.W.0052.000000T0000Z-260428T0145Z/
Sainte Genevieve MO-
826 PM CDT Mon Apr 27 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR WEST
CENTRAL SAINTE GENEVIEVE COUNTY...
At 826 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Farmington, moving east at 45 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 tornadic storm will remain over mainly rural areas of West
Central Sainte Genevieve County.
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 3793 9038 3792 9037 3783 9027 3780 9037
3781 9037 3781 9038 3783 9040 3788 9046
TIME...MOT...LOC 0122Z 266DEG 40KT 3781 9045
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Jaja646
WWUS53 KLSX 280132
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
832 PM CDT Mon Apr 27 2026
MOC186-280142-
/O.CAN.KLSX.TO.W.0052.000000T0000Z-260428T0145Z/
Sainte Genevieve MO-
832 PM CDT Mon Apr 27 2026
...TORNADO WARNING IS CANCELLED FOR WEST CENTRAL SAINTE GENEVIEVE
COUNTY...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. A Severe Thunderstorm Warning still remains in effect
for St. Francois and Ste. Genevieve counties until 915.
A Tornado Watch remains in effect until 900 PM CDT for a portion of
southeast Missouri.
&&
LAT...LON 3793 9038 3792 9037 3783 9027 3780 9037
3781 9037 3781 9038 3783 9040 3788 9046
TIME...MOT...LOC 0126Z 266DEG 40KT 3781 9039
$$
JajaThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:09 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 51 min |
| Apr 27, 7:12 PM CDT | Severe Thunderstorm Warning | LSX | City of Saint Louis | 63 min |
| Apr 27, 7:27 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Washington | 48 min |
| Apr 27, 7:34 PM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 102 min |
| Apr 27, 8:00 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 25 min |
| Apr 27, 8:05 PM CDT | Tornado Warning | LSX | Reynolds | 40 min |
| Apr 27, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 32 min |
| Apr 27, 10:37 PM CDT | River Flood Warning | LSX | Marion | 37 hr |
| Apr 27, 10:37 PM CDT | River Flood Warning | LSX | Marion | 56 hr |
| Apr 28, 3:13 AM CDT | River Flood Warning | LSX | Cole | 41 hr |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Charles | 6 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Jefferson | 4 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Charles | 5 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Louis, City of Saint Louis | 5 days |
| Apr 28, 2:18 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 12 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.