Alert archive / Missouri / Tornado Warnings in 2025
Tornado Warning 48, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 20, 2025, 7:28 PM CDT for 4 counties in Missouri. It was in force for 37 min. 1 report 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 20, 2025, 7:28 PM CDT (00:28 UTC)
- Expired
- Apr 20, 2025, 8:05 PM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 00:32 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 20, 7:36 PM CDT | TSTM WND DMG | De Soto, MO | Power lines down in town. |
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 20, 3:41 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 281 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
- 182 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1336 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 377 m²/s²
- 0-3 km storm-relative helicity
- 580 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.9
The text
As transmitted.
084
WFUS53 KLSX 210028
TORLSX
MOC099-186-187-221-210115-
/O.NEW.KLSX.TO.W.0048.250421T0028Z-250421T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
728 PM CDT Sun Apr 20 2025
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Jefferson County in east central Missouri...
East Central Washington County in east central Missouri...
Northwestern Sainte Genevieve County in southeastern Missouri...
Northwestern Saint Francois County in southeastern Missouri...
* Until 815 PM CDT.
* At 728 PM CDT, a severe thunderstorm capable of producing a
tornado was located near Leadwood, moving northeast at 65 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...
Festus, Bonne Terre, De Soto, Pevely, Desloge, Crystal City,
Herculaneum, Potosi, Leadwood, Barnhart, Olympian Village,
Bloomsdale, Irondale, Mineral Point, Horine, Valles Mill, French
Village, Blackwell, Victoria and Hematite.
This includes the following State Parks...
St. Francois State Park and Gov. Dunklin's Grave Historic Site.
This includes Interstate 55 in Missouri between exits 157 and 180.
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 3778 9068 3793 9083 3833 9037 3826 9037
3822 9036 3820 9034 3816 9027 3809 9022
3805 9013 3804 9013 3784 9044 3790 9051
TIME...MOT...LOC 0027Z 229DEG 56KT 3790 9065
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Elmore3 follow-up statements
154
WWUS53 KLSX 210036
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
736 PM CDT Sun Apr 20 2025
MOC221-210046-
/O.CAN.KLSX.TO.W.0048.000000T0000Z-250421T0115Z/
Washington MO-
736 PM CDT Sun Apr 20 2025
...TORNADO WARNING IS CANCELLED FOR EAST CENTRAL WASHINGTON COUNTY
IN EAST CENTRAL MISSOURI...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However, small hail and
gusty winds are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
east central Missouri.
&&
LAT...LON 3808 9064 3833 9037 3826 9037 3822 9036
3818 9032 3818 9030 3817 9029 3816 9027
3813 9025 3811 9024 3809 9022 3805 9013
3804 9013 3784 9044 3790 9051 3781 9064
TIME...MOT...LOC 0028Z 229DEG 56KT 3792 9063
$$
MOC099-186-187-210115-
/O.CON.KLSX.TO.W.0048.000000T0000Z-250421T0115Z/
Jefferson MO-Sainte Genevieve MO-Saint Francois MO-
736 PM CDT Sun Apr 20 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN JEFFERSON, NORTHWESTERN SAINTE GENEVIEVE AND
NORTHWESTERN SAINT FRANCOIS COUNTIES...
At 736 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Bonne Terre, moving northeast at 60 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...
Festus, Bonne Terre, De Soto, Pevely, Desloge, Crystal City,
Herculaneum, Leadwood, Barnhart, Olympian Village, Bloomsdale,
Horine, Valles Mill, French Village, Victoria, Hematite, Blackwell
and Frankclay.
This includes the following State Parks...
St. Francois State Park and Gov. Dunklin's Grave Historic Site.
This includes Interstate 55 in Missouri between exits 157 and 180.
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 3808 9064 3833 9037 3826 9037 3822 9036
3818 9032 3818 9030 3817 9029 3816 9027
3813 9025 3811 9024 3809 9022 3805 9013
3804 9013 3784 9044 3790 9051 3781 9064
TIME...MOT...LOC 0028Z 228DEG 52KT 3791 9064
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Elmore755
WWUS53 KLSX 210046
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
746 PM CDT Sun Apr 20 2025
MOC099-186-187-210115-
/O.CON.KLSX.TO.W.0048.000000T0000Z-250421T0115Z/
Jefferson MO-Sainte Genevieve MO-Saint Francois MO-
746 PM CDT Sun Apr 20 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN JEFFERSON, NORTHWESTERN SAINTE GENEVIEVE AND
NORTHWESTERN SAINT FRANCOIS COUNTIES...
At 746 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Olympian Village, or 9 miles southeast of De Soto,
moving northeast at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
Locations impacted include...
Festus, Bonne Terre, De Soto, Pevely, Desloge, Crystal City,
Herculaneum, Barnhart, Olympian Village, Bloomsdale, Horine,
French Village, Valles Mill, Hematite and Victoria.
This includes the following State Parks...
St. Francois State Park and Gov. Dunklin's Grave Historic Site.
This includes Interstate 55 in Missouri between exits 157 and 180.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 3815 9056 3833 9037 3829 9037 3822 9036
3819 9033 3816 9027 3809 9022 3805 9013
3804 9013 3784 9044 3790 9051 3787 9055
TIME...MOT...LOC 0036Z 227DEG 48KT 3799 9054
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
Elmore902
WWUS53 KLSX 210105
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
805 PM CDT Sun Apr 20 2025
MOC099-186-187-210115-
/O.CAN.KLSX.TO.W.0048.000000T0000Z-250421T0115Z/
Jefferson MO-Sainte Genevieve MO-Saint Francois MO-
805 PM CDT Sun Apr 20 2025
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN JEFFERSON,
NORTHWESTERN SAINTE GENEVIEVE AND NORTHWESTERN SAINT FRANCOIS
COUNTIES...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However, small hail and
gusty winds are still possible with this thunderstorm.
&&
LAT...LON 3815 9056 3833 9037 3829 9037 3822 9036
3819 9033 3816 9027 3809 9022 3805 9013
3804 9013 3784 9044 3790 9051 3787 9055
TIME...MOT...LOC 0046Z 227DEG 48KT 3807 9042
$$
ElmoreThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:13 PM CDT | Tornado Warning | LSX | Iron, Madison, Reynolds, Saint Francois, Washington | 47 min |
| Apr 20, 7:53 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Madison, Sainte Genevieve, Saint Francois, Saint Louis | 52 min |
| Apr 20, 7:56 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 49 min |
| Apr 20, 8:19 PM CDT | Tornado Warning | LSX | Madison | 41 min |
| Apr 20, 8:53 PM CDT | River Flood Warning | LSX | Monroe | 49 hr |
| Apr 20, 8:53 PM CDT | River Flood Warning | LSX | Lincoln | 67 hr |
| Apr 20, 8:57 PM CDT | River Flood Warning | LSX | Franklin, Jefferson | 60 hr |
| Apr 20, 8:57 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 67 hr |
| Apr 20, 8:57 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 4 days |
| Apr 21, 3:47 AM CDT | River Flood Warning | LSX | Marion | 6 hr |
| Apr 21, 7:23 AM CDT | River Flood Warning | LSX | Lewis | 23 hr |
| Apr 21, 7:23 AM CDT | River Flood Warning | LSX | Lewis | 61 hr |
| Apr 21, 11:19 AM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 4 days |
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.