Alert archive / Missouri / Tornado Warnings in 2025

Tornado Warning 77, NWS St. Louis, MO

May 19, 2025Jefferson County, Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at May 19, 2025, 10:43 PM CDT for Jefferson County, Washington County, Missouri. It was in force for 32 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: May 19, 2025, 10:43 PM CDT (03:43 UTC)
Expired: May 19, 2025, 11:15 PM CDT
In force: 32 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Jefferson County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 42 km from the middle of the area, began a volume at 03:44 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
May 19, 10:57 PM CDT	TSTM WND DMG	3 S Murphy, MO	Corrects previous tstm wnd dmg report from 3 S Murphy. Numerous tree limbs down including some a few larger trees snapped and uprooted. Time estimated from radar.
May 19, 11:10 PM CDT	TSTM WND DMG	Mapaville, MO	Via Facebook: Two 12 inch tree branches snapped and fallen, damaging soft metal fence in reporters backyard.

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
May 19, 8:26 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.7 hours before the alert went out and 266 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

250 
WFUS53 KLSX 200343
TORLSX
MOC099-221-200415-
/O.NEW.KLSX.TO.W.0077.250520T0343Z-250520T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
1043 PM CDT Mon May 19 2025

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Jefferson County in east central Missouri...
  Northeastern Washington County in east central Missouri...

* Until 1115 PM CDT.

* At 1043 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located 7 miles northeast of Old Mines, or 7 miles 
  southwest of De Soto, 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...
  Arnold, Eureka, De Soto, Pevely, Hillsboro, Byrnes Mill, Cedar 
  Hill, Antonia, High Ridge, Barnhart, Murphy, Oakville, Cedar Hill 
  Lakes, Dittmer, House Springs, Horine, Imperial, Scotsdale, 
  Parkdale and Kimmswick.

This includes the following State Parks...
Washington State Park, Mastodon Historic Site and Sandy Creek 
Covered Bridge Historic Site.

This includes Interstate 55 in Missouri between exits 185 and 191.

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 3820 9078 3848 9073 3845 9068 3846 9065
      3849 9065 3847 9062 3850 9059 3850 9041
      3848 9042 3845 9041 3845 9034 3832 9037
      3807 9062 3808 9064 3800 9064 3809 9082
      3820 9080
TIME...MOT...LOC 0343Z 210DEG 51KT 3810 9068

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Jaja

2 follow-up statements

316 
WWUS53 KLSX 200352
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1052 PM CDT Mon May 19 2025

MOC221-200402-
/O.CAN.KLSX.TO.W.0077.000000T0000Z-250520T0415Z/
Washington MO-
1052 PM CDT Mon May 19 2025

...TORNADO WARNING IS CANCELLED FOR NORTHEASTERN 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 300 AM CDT for a portion of 
east central Missouri.

&&

LAT...LON 3848 9073 3845 9068 3846 9065 3849 9065
      3847 9062 3850 9059 3850 9041 3848 9042
      3845 9041 3845 9034 3832 9037 3807 9062
      3808 9066 3809 9066 3809 9065 3810 9066
      3808 9067 3820 9078
TIME...MOT...LOC 0343Z 210DEG 51KT 3810 9068

$$


MOC099-200415-
/O.CON.KLSX.TO.W.0077.000000T0000Z-250520T0415Z/
Jefferson MO-
1052 PM CDT Mon May 19 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR JEFFERSON 
COUNTY...

At 1052 PM CDT, a severe thunderstorm capable of producing a tornado 
was located over Hillsboro, 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...
  Arnold, Eureka, De Soto, Pevely, Hillsboro, Byrnes Mill, Cedar 
  Hill, Antonia, High Ridge, Barnhart, Murphy, Oakville, Cedar Hill 
  Lakes, House Springs, Dittmer, Horine, Imperial, Scotsdale, 
  Parkdale and Kimmswick.

This includes the following State Parks...
	Mastodon Historic Site and Sandy Creek Covered Bridge Historic Site.

This includes Interstate 55 in Missouri between exits 180 and 191.

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 3848 9073 3845 9068 3846 9065 3849 9065
      3847 9062 3850 9059 3850 9041 3848 9042
      3845 9041 3845 9034 3832 9037 3807 9062
      3808 9066 3809 9066 3809 9065 3810 9066
      3808 9067 3820 9078
TIME...MOT...LOC 0343Z 210DEG 51KT 3810 9068

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Jaja

666 
WWUS53 KLSX 200359
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1059 PM CDT Mon May 19 2025

MOC099-200415-
/O.CON.KLSX.TO.W.0077.000000T0000Z-250520T0415Z/
Jefferson MO-
1059 PM CDT Mon May 19 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR CENTRAL 
JEFFERSON COUNTY...

At 1059 PM CDT, a severe thunderstorm capable of producing a tornado 
was located 5 miles northeast of Hillsboro, 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...
  Arnold, Eureka, De Soto, Pevely, Hillsboro, Byrnes Mill, Antonia, 
  Cedar Hill, High Ridge, Barnhart, Murphy, Oakville, Cedar Hill 
  Lakes, House Springs, Horine, Dittmer, Imperial, Scotsdale, 
  Parkdale and Kimmswick.

This includes the following State Parks...
	Mastodon Historic Site and Sandy Creek Covered Bridge Historic Site.

This includes Interstate 55 in Missouri between exits 185 and 191.

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 3809 9065 3816 9071 3845 9067 3846 9065
      3849 9065 3847 9062 3850 9059 3850 9041
      3848 9042 3845 9041 3845 9034 3832 9037
      3807 9062 3809 9067
TIME...MOT...LOC 0352Z 210DEG 51KT 3821 9059

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Jaja

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:53 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	32 min
May 19, 8:00 PM CDT	Tornado Warning	LSX	Jefferson	24 min
May 19, 8:02 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	58 min
May 19, 8:33 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	42 min
May 19, 8:35 PM CDT	Severe Thunderstorm Warning	LSX	Washington	40 min
May 19, 8:42 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Osage	63 min
May 19, 8:43 PM CDT	Tornado Warning	LSX	Iron, Washington	47 min
May 19, 8:55 PM CDT	Areal Flood Advisory	LSX	Audrain, Lewis, Marion, Monroe, Ralls, Shelby	6 hr
May 19, 9:28 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	47 min
May 19, 9:33 PM CDT	Tornado Warning	LSX	Washington	42 min
May 19, 9:34 PM CDT	Tornado Warning	LSX	Marion	38 min
May 19, 9:35 PM CDT	Tornado Warning	LSX	Crawford	14 min
May 19, 10:01 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	44 min
May 19, 10:13 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	32 min
May 19, 10:17 PM CDT	Tornado Warning	LSX	Washington	31 min
May 19, 10:26 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Reynolds, Washington	49 min
May 19, 10:30 PM CDT	Tornado Warning	LSX	Crawford, Iron, Reynolds, Washington	45 min
May 19, 10:47 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Gasconade, Washington	43 min
May 19, 10:53 PM CDT	Severe Thunderstorm Warning	LSX	Pike	68 min
May 19, 11:03 PM CDT	Tornado Warning	LSX	Pike	25 min
May 19, 11:07 PM CDT	Areal Flood Advisory	LSX	Marion, Ralls	4 hr
May 19, 11:07 PM CDT	Tornado Warning	LSX	Franklin, Iron, Saint Francois, Washington	38 min
May 19, 11:10 PM CDT	Tornado Warning	LSX	Jefferson, Saint Louis	30 min
May 19, 11:33 PM CDT	Tornado Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	42 min
May 19, 11:39 PM CDT	Severe Thunderstorm Warning	LSX	Madison	47 min
May 19, 11:44 PM CDT	Tornado Warning	LSX	Madison	36 min
May 20, 12:03 AM CDT	Areal Flood Advisory	LSX	Crawford, Franklin, Iron, Jefferson, Lincoln, Saint Charles and 6 more	6 hr
May 20, 12:12 AM CDT	Tornado Warning	LSX	Jefferson, Sainte Genevieve	33 min
May 20, 1:53 AM CDT	Areal Flood Warning	LSX	Saint Louis	3 hr
May 20, 9:44 AM CDT	River Flood Warning	LSX	Crawford, Washington	35 hr
May 20, 9:44 AM CDT	River Flood Warning	LSX	Crawford	24 hr

Nearby

Tornado Warnings in Missouri, 2025 Every tornado warning in 2025 Tornadoes 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.