Alert archive / Missouri / Tornado Warnings in 2021

Tornado Warning 24, NWS St. Louis, MO

October 24, 20214 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Oct 24, 2021, 7:48 PM CDT for 4 counties in Missouri. It was in force for 27 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
Oct 24, 2021, 7:48 PM CDT (00:48 UTC)
Expired
Oct 24, 2021, 8:15 PM CDT
In force
27 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO

The radar

The St Louis radar (KLSX), 114 km from the middle of the area, began a volume at 00:50 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

TimeReportWhereRemark
Oct 24, 8:25 PM CDTTORNADO2 Ssw Libertyville, MOHOUSE COMPLETELY DESTROYED ON OLD FREDERICKTOWN RD; INJURIES UNKNOWN.
Oct 24, 8:25 PM CDTTORNADO3 Se Farmington, MOFOUR HOUSES DESTROYED NEAR POSSUM HOLLOW RD AND OLD FREDERICKTOWN RD.

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.

IssuedProductOfficeLasted
Oct 24, 2:06 PM CDTTornado WatchSPC9 hr
Oct 24, 5:44 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.8 hours before the alert went out and 290 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, Springfield, MO at 00:00Z on 2021-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1534 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2021-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 296 square meters per square second.19395878Sfc1 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
1534 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
296 m²/s²
0-3 km storm-relative helicity
317 m²/s²
Significant tornado parameter
2.8
Supercell composite
12.3

Open this sounding in Storm Lab

The text

As transmitted.

199 
WFUS53 KLSX 250048
TORLSX
MOC093-123-179-187-250115-
/O.NEW.KLSX.TO.W.0024.211025T0048Z-211025T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
748 PM CDT Sun Oct 24 2021

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northeastern Iron County in southeastern Missouri...
  Northeastern Reynolds County in southeastern Missouri...
  Northwestern Madison County in southeastern Missouri...
  Southwestern St. Francois County in southeastern Missouri...

* Until 815 PM CDT.
    
* At 748 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles southwest of Belleview, 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.

* This dangerous storm will be near...
  Belleview around 755 PM CDT.
  Ironton, Pilot Knob, Arcadia and Iron Mountain around 800 PM CDT.
  Bismarck, Iron Mountain Lake and Roselle around 805 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Park Hills, Farmington and Knob Lick.

This also includes St. Joe State Park, Johnsons Shut-Ins State Park,
Fort Davidson Historic Site, Elephant Rocks State Park, Taum Sauk
Mountain State Park, and Missouri Mines Historic Site.
 
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 3745 9085 3761 9096 3774 9072 3773 9065
      3773 9064 3778 9064 3788 9046 3770 9024
TIME...MOT...LOC 0048Z 239DEG 51KT 3758 9083 

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

$$

Glass
1 follow-up statement
907 
WWUS53 KLSX 250057
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
757 PM CDT Sun Oct 24 2021

MOC179-250107-
/O.CAN.KLSX.TO.W.0024.000000T0000Z-211025T0115Z/
Reynolds MO-
757 PM CDT Sun Oct 24 2021

...THE TORNADO WARNING FOR NORTHEASTERN REYNOLDS COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Missouri. A Tornado Watch also remains in effect until 100 AM CDT for
southeastern Missouri.

LAT...LON 3760 9077 3760 9080 3763 9080 3770 9067
      3772 9062 3777 9057 3785 9043 3770 9024
      3748 9077
TIME...MOT...LOC 0057Z 243DEG 48KT 3760 9069 

$$

MOC093-123-187-250115-
/O.CON.KLSX.TO.W.0024.000000T0000Z-211025T0115Z/
Iron MO-Madison MO-St. Francois MO-
757 PM CDT Sun Oct 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHEASTERN IRON...NORTHWESTERN MADISON AND SOUTHWESTERN ST.
FRANCOIS COUNTIES IN SOUTHEASTERN MISSOURI...
    
At 757 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Ironton, 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.

This dangerous storm will be near...
  Ironton, Pilot Knob and Arcadia around 800 PM CDT.
  Iron Mountain Lake, Roselle and Iron Mountain around 805 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Farmington, Park Hills and Knob Lick.

This also includes St. Joe State Park, Fort Davidson Historic Site,
and Elephant Rocks State Park.
 
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 3760 9077 3760 9080 3763 9080 3770 9067
      3772 9062 3777 9057 3785 9043 3770 9024
      3748 9077
TIME...MOT...LOC 0057Z 243DEG 48KT 3760 9069 

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

$$

Glass

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 7:00 PM CDTSevere Thunderstorm WarningLSXPike34 min
Oct 24, 7:03 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Warren42 min
Oct 24, 7:06 PM CDTTornado WarningLSXReynolds39 min
Oct 24, 7:07 PM CDTSevere Thunderstorm WarningLSXCallaway, Franklin, Gasconade, Montgomery, Osage, Warren38 min
Oct 24, 7:09 PM CDTTornado WarningLSXCrawford, Iron, Washington31 min
Oct 24, 7:37 PM CDTSevere Thunderstorm WarningLSXReynolds38 min
Oct 24, 7:39 PM CDTSevere Thunderstorm WarningLSXJefferson, Sainte Genevieve, Saint Francois, Washington51 min
Oct 24, 8:03 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois42 min
Oct 24, 8:09 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois40 min
Oct 24, 8:10 PM CDTTornado WarningLSXIron, Madison, Reynolds50 min
Oct 24, 8:23 PM CDTTornado WarningLSXIron, Madison, Reynolds52 min
Oct 24, 8:34 PM CDTTornado Warning Tornado observedConsiderable damage threatLSXSainte Genevieve41 min
Oct 24, 8:48 PM CDTTornado Warning Tornado observedConsiderable damage threatLSXMadison, Saint Francois27 min
Oct 24, 9:08 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis54 min
Oct 24, 9:11 PM CDTTornado WarningLSXIron, Madison49 min
Oct 24, 9:12 PM CDTFlash Flood WarningLSXIron, Madison4 hr
Oct 24, 9:37 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds36 min
Oct 24, 10:07 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds38 min
Oct 24, 10:12 PM CDTFlash Flood WarningLSXMadison4 hr

Nearby

Tornado Warnings in Missouri, 2021Every tornado warning in 2021Tornadoes in 2021

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.