Alert archive / Missouri / Tornado Warnings in 2024

Tornado Warning 27, NWS St. Louis, MO

April 18, 2024Lincoln County, Saint Charles County, Missouri; Calhoun County, Illinois

NWS St. Louis, MO issued this tornado warning at Apr 18, 2024, 4:48 PM CDT for Lincoln County, Saint Charles County, Missouri; Calhoun County, Illinois. 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: Apr 18, 2024, 4:48 PM CDT (21:48 UTC)
Expired: Apr 18, 2024, 5:30 PM CDT
In force: 42 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Calhoun County, IL, Lincoln County, MO, Saint Charles County, MO

The radar

The St Louis radar (KLSX), 26 km from the middle of the area, began a volume at 21:51 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 18, 12:56 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.8 hours before the alert went out and 224 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: 1827 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

426 
WFUS53 KLSX 182148
TORLSX
ILC013-MOC113-183-182230-
/O.NEW.KLSX.TO.W.0027.240418T2148Z-240418T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
448 PM CDT Thu Apr 18 2024

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Southeastern Calhoun County in southwestern Illinois...
  Northwestern St. Charles County in east central Missouri...
  Southeastern Lincoln County in east central Missouri...

* Until 530 PM CDT.

* At 448 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Moscow Mills, moving east at 40 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 dangerous storm will be near...
  Wentzville, St. Paul, Josephville, and Chain of Rocks around 455 
  PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3902 9058 3899 9057 3895 9052 3897 9048
      3897 9045 3883 9052 3884 9096 3887 9096
      3887 9098 3895 9096
TIME...MOT...LOC 2148Z 261DEG 37KT 3888 9092 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

CVKING

2 follow-up statements

650 
WWUS53 KLSX 182159
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
459 PM CDT Thu Apr 18 2024

ILC013-MOC113-183-182230-
/O.CON.KLSX.TO.W.0027.000000T0000Z-240418T2230Z/
Calhoun IL-St. Charles MO-Lincoln MO-
459 PM CDT Thu Apr 18 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
SOUTHEASTERN CALHOUN...NORTHWESTERN ST. CHARLES AND SOUTHEASTERN
LINCOLN COUNTIES...

At 459 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Chain of Rocks, moving east at 45 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 dangerous storm will be near...
  St. Paul around 505 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3902 9058 3899 9057 3895 9052 3897 9048
      3897 9045 3883 9052 3884 9086 3889 9085
      3897 9083
TIME...MOT...LOC 2159Z 261DEG 37KT 3890 9077 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

CVKING

523 
WWUS53 KLSX 182213
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
513 PM CDT Thu Apr 18 2024

MOC113-182222-
/O.CAN.KLSX.TO.W.0027.000000T0000Z-240418T2230Z/
Lincoln MO-
513 PM CDT Thu Apr 18 2024

...THE TORNADO WARNING FOR SOUTHEASTERN LINCOLN COUNTY IS
CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
southwestern Illinois...and east central Missouri.

&&

LAT...LON 3902 9058 3899 9057 3895 9052 3897 9048
      3897 9045 3896 9045 3883 9052 3884 9077
      3891 9072 3891 9071 3892 9072 3892 9069
      3893 9070 3894 9066 3896 9068 3899 9067
TIME...MOT...LOC 2212Z 262DEG 34KT 3891 9062 

$$

ILC013-MOC183-182230-
/O.CON.KLSX.TO.W.0027.000000T0000Z-240418T2230Z/
Calhoun IL-St. Charles MO-
513 PM CDT Thu Apr 18 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
SOUTHEASTERN CALHOUN AND NORTH CENTRAL ST. CHARLES COUNTIES...

At 512 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of St. Paul, moving east at 40 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Calhoun and north central St. Charles Counties,
including the following locations... Meppen, Brussels, Golden Eagle,
Deer Plain, Kampville, and Beechville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3902 9058 3899 9057 3895 9052 3897 9048
      3897 9045 3896 9045 3883 9052 3884 9077
      3891 9072 3891 9071 3892 9072 3892 9069
      3893 9070 3894 9066 3896 9068 3899 9067
TIME...MOT...LOC 2212Z 262DEG 34KT 3891 9062 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 2:42 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	63 min
Apr 18, 2:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	48 min
Apr 18, 3:00 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	30 min
Apr 18, 3:20 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Montgomery, Pike	40 min
Apr 18, 3:21 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	39 min
Apr 18, 3:53 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	52 min
Apr 18, 3:57 PM CDT	Severe Thunderstorm Warning	LSX	Pike	48 min
Apr 18, 4:09 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	51 min
Apr 18, 4:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Lincoln	44 min
Apr 18, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	50 min
Apr 18, 4:58 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
Apr 18, 5:04 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	56 min
Apr 18, 5:12 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	48 min
Apr 18, 5:25 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	65 min
Apr 18, 5:33 PM CDT	Tornado Warning	LSX	Jefferson, Saint Louis	25 min
Apr 18, 5:37 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Crawford, Franklin, Iron, Jefferson, Saint Francois, Washington	53 min
Apr 18, 5:39 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	66 min
Apr 18, 5:49 PM CDT	Tornado Warning	LSX	City of Saint Louis	41 min
Apr 18, 6:13 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more	77 min
Apr 18, 6:34 PM CDT	Tornado Warning	LSX	Sainte Genevieve	41 min
Apr 18, 3:23 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	52 min
Apr 18, 3:49 PM CDT	Tornado Warning	LSX	Pike	26 min
Apr 18, 4:03 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Greene	57 min
Apr 18, 4:25 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene	50 min
Apr 18, 4:47 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin	58 min
Apr 18, 4:52 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	38 min
Apr 18, 5:01 PM CDT	Tornado Warning Tornado observed	LSX	Greene, Macoupin	29 min
Apr 18, 5:07 PM CDT	Tornado Warning	LSX	Greene, Jersey	23 min
Apr 18, 5:18 PM CDT	Severe Thunderstorm Warning	LSX	Jersey, Madison	27 min
Apr 18, 5:26 PM CDT	Tornado Warning	LSX	Macoupin	34 min
Apr 18, 5:30 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin	60 min
Apr 18, 5:34 PM CDT	Tornado Warning	LSX	Greene, Jersey, Macoupin	26 min
Apr 18, 5:45 PM CDT	Tornado Warning	LSX	Macoupin, Montgomery	45 min
Apr 18, 5:45 PM CDT	Tornado Warning	LSX	Madison	45 min
Apr 18, 5:53 PM CDT	Areal Flood Advisory	LSX	Greene, Macoupin	2 hr
Apr 18, 5:56 PM CDT	Tornado Warning	LSX	Macoupin, Madison	49 min
Apr 18, 5:59 PM CDT	Tornado Warning	LSX	Macoupin	31 min
Apr 18, 6:10 PM CDT	Tornado Warning	LSX	Bond, Clinton, Madison, Saint Clair, Washington	65 min
Apr 18, 6:14 PM CDT	Tornado Warning	LSX	Montgomery	46 min
Apr 18, 6:41 PM CDT	Tornado Warning	LSX	Fayette	49 min

Nearby

Tornado Warnings in Missouri, 2024 Tornado Warnings in Illinois, 2024 Every tornado warning in 2024 Tornadoes in 2024

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.