Alert archive / Missouri / Tornado Warnings in 2021

Tornado Warning 11, NWS St. Louis, MO

June 24, 2021Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this tornado warning at Jun 24, 2021, 11:03 PM CDT for Monroe County, Shelby 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: Jun 24, 2021, 11:03 PM CDT (04:03 UTC)
Expired: Jun 24, 2021, 11:45 PM CDT
In force: 42 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 167 km from the middle of the area, began a volume at 04:02 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
Jun 24, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.1 hours before the alert went out and 252 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: 112 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 817 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

871 
WFUS53 KLSX 250403
TORLSX
MOC137-205-250445-
/O.NEW.KLSX.TO.W.0011.210625T0403Z-210625T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
1103 PM CDT Thu Jun 24 2021

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Southern Shelby County in northeastern Missouri...
  Northwestern Monroe County in northeastern Missouri...

* Until 1145 PM CDT.
    
* At 1103 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Clarence, moving east at 50 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...
  Maud around 1115 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Shelbina and Emden.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3976 9229 3986 9184 3961 9185 3960 9230
TIME...MOT...LOC 0403Z 264DEG 43KT 3967 9235 

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

$$

CVKING

2 follow-up statements

081 
WWUS53 KLSX 250423
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1123 PM CDT Thu Jun 24 2021

MOC137-205-250445-
/O.CON.KLSX.TO.W.0011.000000T0000Z-210625T0445Z/
Shelby MO-Monroe MO-
1123 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR
SOUTHEASTERN SHELBY AND NORTH CENTRAL MONROE COUNTIES...
    
At 1123 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Shelbina, 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.

Locations impacted include...
  Emden.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3977 9217 3986 9184 3961 9185 3960 9210
TIME...MOT...LOC 0423Z 247DEG 35KT 3973 9208 

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

$$

CVKING

756 
WWUS53 KLSX 250431 CCA
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1131 PM CDT Thu Jun 24 2021

MOC137-205-250500-
/O.COR.KLSX.TO.W.0011.000000T0000Z-210625T0445Z/
Shelby MO-Monroe MO-
1131 PM CDT Thu Jun 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR
SOUTHEASTERN SHELBY AND NORTH CENTRAL MONROE COUNTIES...
    
At 1130 PM CDT, a confirmed tornado was located over Shelbina, moving
east at 50 mph.

HAZARD...Damaging tornado.

SOURCE...Law enforcement confirmed tornado near Shelbina.

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...
Shelbina, Shelbyville, Emden and Hunnewell. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3977 9217 3986 9184 3961 9185 3960 9210
TIME...MOT...LOC 0423Z 249DEG 42KT 3973 9208 

TORNADO...OBSERVED
HAIL...<.75IN

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	48 min
Jun 24, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lewis, Marion, Monroe, Pike, Ralls and 1 more	46 min
Jun 24, 11:32 PM CDT	Tornado Warning	LSX	Lewis	28 min
Jun 24, 11:35 PM CDT	Tornado Warning	LSX	Audrain, Monroe, Ralls	40 min
Jun 24, 11:40 PM CDT	Tornado Warning	LSX	Marion, Monroe, Ralls, Shelby	38 min
Jun 25, 12:09 AM CDT	Tornado Warning	LSX	Audrain, Pike, Ralls	51 min
Jun 25, 12:17 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Ralls	43 min
Jun 25, 12:57 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	48 min
Jun 25, 1:27 AM CDT	River Flood Warning	LSX	Boone	33 hr
Jun 25, 1:54 AM CDT	Areal Flood Advisory	LSX	Montgomery	3 hr
Jun 25, 2:21 AM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Callaway	106 min
Jun 25, 3:07 AM CDT	Areal Flood Advisory	LSX	Boone, Callaway, Cole, Moniteau	82 min
Jun 25, 3:34 AM CDT	Flash Flood Warning	LSX	Boone	6 hr
Jun 25, 4:04 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 4:26 AM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	6 hr
Jun 25, 4:28 AM CDT	Flash Flood Warning	LSX	Callaway, Lincoln, Montgomery, Osage, Warren	6 hr
Jun 25, 7:48 AM CDT	River Flood Warning	LSX	Lincoln	62 hr
Jun 25, 8:25 AM CDT	Areal Flood Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau	9 hr
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Franklin, Warren	9 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	8 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Callaway, Osage	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Jun 25, 4:59 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	20 min
Jun 25, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	44 min
Jun 25, 5:05 PM CDT	River Flood Warning	LSX	Cole, Osage	9 days
Jun 25, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	22 min
Jun 25, 6:07 PM CDT	River Flood Warning	LSX	Lincoln	3 days
Jun 25, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	39 min
Jun 25, 6:43 PM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 6:48 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Jun 25, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	19 min

Nearby

Tornado Warnings in Missouri, 2021 Every tornado warning in 2021 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.