Alert archive / Missouri / Tornado Warnings in 2025

Tornado Warning 71, NWS St. Louis, MO

May 19, 2025Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at May 19, 2025, 9:33 PM CDT for Washington County, Missouri. It was in force for 42 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
May 19, 2025, 9:33 PM CDT (02:33 UTC)
Expired
May 19, 2025, 10:15 PM CDT
In force
42 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Washington County, MO

The radar

The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 02:31 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.

IssuedProductOfficeLasted
May 19, 8:26 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.6 hours before the alert went out and 299 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2025-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2025-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1853 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
322 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

493 
WFUS53 KLSX 200233
TORLSX
MOC221-200315-
/O.NEW.KLSX.TO.W.0071.250520T0233Z-250520T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
933 PM CDT Mon May 19 2025

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Central Washington County in east central Missouri...

* Until 1015 PM CDT.

* At 933 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located 8 miles southwest of Potosi, moving north 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.

* This tornado will be near...
  Potosi around 945 PM CDT.

Other locations impacted by the tornado include Belgrade, Shirley, 
Latty and Cadet.

This includes the following State Parks...
	Washington State Park.

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 9081 3780 9097 3820 9101 3820 9088
      3818 9076 3810 9068 3809 9069 3809 9066
      3810 9066 3809 9065 3808 9066 3808 9064
      3801 9064
TIME...MOT...LOC 0233Z 201DEG 31KT 3784 9087

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Jaja
3 follow-up statements
264 
WWUS53 KLSX 200254
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
954 PM CDT Mon May 19 2025

MOC221-200315-
/O.CON.KLSX.TO.W.0071.000000T0000Z-250520T0315Z/
Washington MO-
954 PM CDT Mon May 19 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR 
NORTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

At 954 PM CDT, a severe thunderstorm capable of producing a tornado 
was located over Old Mines, or 5 miles north of Potosi, moving north 
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.

This tornado will be near...
  Potosi around 945 PM CDT.

Other locations impacted by the tornado include Latty.

This includes the following State Parks...
	Washington State Park.

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 3791 9077 3791 9090 3820 9101 3820 9088
      3818 9076 3810 9068 3809 9069 3809 9066
      3810 9066 3809 9065 3808 9067 3808 9064
TIME...MOT...LOC 0233Z 201DEG 31KT 3784 9087

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Jaja
703 
WWUS53 KLSX 200304
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1004 PM CDT Mon May 19 2025

MOC221-200315-
/O.CON.KLSX.TO.W.0071.000000T0000Z-250520T0315Z/
Washington MO-
1004 PM CDT Mon May 19 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR 
NORTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

At 1004 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Old Mines, or 9 miles north of Potosi, moving north 
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...
  Richwoods and Old Mines.

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 3800 9075 3800 9088 3820 9095 3820 9088
      3818 9076 3810 9068 3809 9069
TIME...MOT...LOC 0254Z 190DEG 28KT 3798 9084

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Jaja
289 
WWUS53 KLSX 200314
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1014 PM CDT Mon May 19 2025

MOC221-200324-
/O.EXP.KLSX.TO.W.0071.000000T0000Z-250520T0315Z/
Washington MO-
1014 PM CDT Mon May 19 2025

...TORNADO WARNING WILL EXPIRE AT 1015 PM CDT FOR NORTHEASTERN 
WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

The Tornado Warning that was previously in effect has been reissued 
for Washington County, Jefferson County, and Franklin County and is 
in effect until 1100 PM CDT. Please refer to that bulletin for the 
latest severe weather information.

A Tornado Watch remains in effect until 300 AM CDT Tuesday for a 
portion of east central Missouri.

&&

LAT...LON 3800 9075 3800 9088 3820 9095 3820 9088
      3818 9076 3810 9068 3809 9069
TIME...MOT...LOC 0304Z 190DEG 28KT 3807 9082

$$

Jaja

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 7:53 PM CDTSevere Thunderstorm WarningLSXJefferson32 min
May 19, 8:00 PM CDTTornado WarningLSXJefferson24 min
May 19, 8:02 PM CDTSevere Thunderstorm WarningLSXCole, Moniteau58 min
May 19, 8:33 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis, City of Saint Louis42 min
May 19, 8:35 PM CDTSevere Thunderstorm WarningLSXWashington40 min
May 19, 8:42 PM CDTSevere Thunderstorm WarningLSXBoone, Callaway, Osage63 min
May 19, 8:43 PM CDTTornado WarningLSXIron, Washington47 min
May 19, 8:55 PM CDTAreal Flood AdvisoryLSXAudrain, Lewis, Marion, Monroe, Ralls, Shelby6 hr
May 19, 9:28 PM CDTSevere Thunderstorm WarningLSXMarion, Ralls47 min
May 19, 9:34 PM CDTTornado WarningLSXMarion38 min
May 19, 9:35 PM CDTTornado WarningLSXCrawford14 min
May 19, 10:01 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis44 min
May 19, 10:13 PM CDTTornado WarningLSXFranklin, Jefferson, Washington32 min
May 19, 10:17 PM CDTTornado WarningLSXWashington31 min
May 19, 10:26 PM CDTSevere Thunderstorm WarningLSXCrawford, Iron, Reynolds, Washington49 min
May 19, 10:30 PM CDTTornado WarningLSXCrawford, Iron, Reynolds, Washington45 min
May 19, 10:43 PM CDTTornado WarningLSXJefferson, Washington32 min
May 19, 10:47 PM CDTTornado WarningLSXCrawford, Franklin, Gasconade, Washington43 min
May 19, 10:53 PM CDTSevere Thunderstorm WarningLSXPike68 min
May 19, 11:03 PM CDTTornado WarningLSXPike25 min
May 19, 11:07 PM CDTAreal Flood AdvisoryLSXMarion, Ralls4 hr
May 19, 11:07 PM CDTTornado WarningLSXFranklin, Iron, Saint Francois, Washington38 min
May 19, 11:10 PM CDTTornado WarningLSXJefferson, Saint Louis30 min
May 19, 11:33 PM CDTTornado WarningLSXJefferson, Sainte Genevieve, Saint Francois42 min
May 19, 11:39 PM CDTSevere Thunderstorm WarningLSXMadison47 min
May 19, 11:44 PM CDTTornado WarningLSXMadison36 min
May 20, 12:03 AM CDTAreal Flood AdvisoryLSXCrawford, Franklin, Iron, Jefferson, Lincoln, Saint Charles and 6 more6 hr
May 20, 12:12 AM CDTTornado WarningLSXJefferson, Sainte Genevieve33 min
May 20, 1:53 AM CDTAreal Flood WarningLSXSaint Louis3 hr
May 20, 9:44 AM CDTRiver Flood WarningLSXCrawford, Washington35 hr
May 20, 9:44 AM CDTRiver Flood WarningLSXCrawford24 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.