Alert archive / Missouri / Tornado Warnings in 2023

Tornado Warning 25, NWS St. Louis, MO

August 4, 2023Moniteau County, Missouri

NWS St. Louis, MO issued this tornado warning at Aug 4, 2023, 8:41 PM CDT for Moniteau County, Missouri. It was in force for 49 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: Aug 4, 2023, 8:41 PM CDT (01:41 UTC)
Expired: Aug 4, 2023, 9:30 PM CDT
In force: 49 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Moniteau County, MO

The radar

The Pleasant Hill radar (KEAX), 141 km from the middle of the area, began a volume at 01:46 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
Aug 4, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.7 hours before the alert went out and 223 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: 3510 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1555 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.7

Open this sounding in Storm Lab

The text

As transmitted.

409 
WFUS53 KLSX 050141
TORLSX
MOC135-050230-
/O.NEW.KLSX.TO.W.0025.230805T0141Z-230805T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
841 PM CDT Fri Aug 4 2023

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Central Moniteau County in central Missouri...

* Until 930 PM CDT.
    
* At 841 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Tipton, moving east at 25 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 dangerous storm will be near...
  Tipton around 845 PM CDT.
  Clarksburg around 850 PM CDT.

Other locations in the path of this tornadic thunderstorm include
California.

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 3868 9282 3868 9262 3875 9259 3874 9239
      3860 9244 3867 9282
TIME...MOT...LOC 0141Z 281DEG 20KT 3872 9276 

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

$$

Glass

3 follow-up statements

600 
WWUS53 KLSX 050157
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
857 PM CDT Fri Aug 4 2023

MOC135-050230-
/O.CON.KLSX.TO.W.0025.000000T0000Z-230805T0230Z/
Moniteau MO-
857 PM CDT Fri Aug 4 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR EAST
CENTRAL MONITEAU COUNTY...
    
At 857 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Clarksburg, moving east at 25 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.

Locations impacted include...
  California.

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 3868 9267 3868 9262 3875 9259 3874 9239
      3860 9244 3864 9267
TIME...MOT...LOC 0157Z 278DEG 23KT 3870 9262 

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

$$

Glass

908 
WWUS53 KLSX 050214
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
914 PM CDT Fri Aug 4 2023

MOC135-050230-
/O.CON.KLSX.TO.W.0025.000000T0000Z-230805T0230Z/
Moniteau MO-
914 PM CDT Fri Aug 4 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR EAST
CENTRAL MONITEAU COUNTY...
    
At 914 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Jamestown, moving east at 30 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.

Locations impacted include...
Kliever.

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 3865 9251 3867 9252 3875 9251 3874 9239
      3863 9243 3864 9246
TIME...MOT...LOC 0214Z 276DEG 25KT 3870 9246 

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

$$

Glass

358 
WWUS53 KLSX 050226
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
926 PM CDT Fri Aug 4 2023

MOC135-050235-
/O.EXP.KLSX.TO.W.0025.000000T0000Z-230805T0230Z/
Moniteau MO-
926 PM CDT Fri Aug 4 2023

...THE TORNADO WARNING FOR EAST CENTRAL MONITEAU COUNTY WILL EXPIRE
AT 930 PM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
central Missouri.


LAT...LON 3865 9251 3867 9252 3875 9251 3874 9239
      3863 9243 3864 9246
TIME...MOT...LOC 0225Z 281DEG 20KT 3869 9239 

$$

Glass

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:21 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Cole, Moniteau	54 min
Aug 4, 9:12 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau	48 min
Aug 4, 9:44 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Osage	46 min
Aug 4, 9:53 PM CDT	Tornado Warning	LSX	Callaway	22 min
Aug 4, 10:02 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Montgomery, Osage	43 min
Aug 4, 11:22 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	38 min
Aug 4, 11:29 PM CDT	Tornado Warning	LSX	Franklin, Saint Charles, Warren	24 min
Aug 4, 11:52 PM CDT	Severe Thunderstorm Warning	LSX	Knox	38 min
Aug 4, 11:53 PM CDT	Flash Flood Warning	LSX	Knox, Lewis	4 hr
Aug 5, 1:58 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	32 min
Aug 5, 2:25 AM CDT	Areal Flood Advisory	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	3 hr
Aug 5, 2:29 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	31 min

Nearby

Tornado Warnings in Missouri, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.