Alert archive / Missouri / Tornado Warnings in 2021

Tornado Warning 20, NWS Kansas City, MO

October 24, 2021Daviess County, DeKalb County, Gentry County, Missouri

NWS Kansas City, MO issued this tornado warning at Oct 24, 2021, 3:23 PM CDT for Daviess County, DeKalb County, Gentry County, Missouri. It was in force for 37 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, 3:23 PM CDT (20:23 UTC)
Expired
Oct 24, 2021, 4:00 PM CDT
In force
37 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Daviess County, MO, DeKalb County, MO, Gentry County, MO

The radar

The Pleasant Hill radar (KEAX), 136 km from the middle of the area, began a volume at 20:22 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, 3:36 PM CDTTORNADO3 Sw Pattonsburg, MONWS STORM SURVEY FOUND EVIDENCE OF A SHORT LIVED EF-0 TORNADO JUST SOUTHWEST OF OLD PATTONSBURG.
Oct 24, 3:50 PM CDTTSTM WND DMG3 Ssw Coffey, MOPOSSIBLE TORNADO...REPORTS OF TREES UPROOTED.

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

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.4 hours before the alert went out and 173 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, Topeka, KS at 12:00Z on 2021-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1036 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, Topeka, KS at 12:00Z on 2021-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 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
1036 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1015 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
374 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.7

Open this sounding in Storm Lab

The text

As transmitted.

266 
WFUS53 KEAX 242023
TOREAX
MOC061-063-075-242100-
/O.NEW.KEAX.TO.W.0020.211024T2023Z-211024T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
323 PM CDT Sun Oct 24 2021

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Northwestern Daviess County in north central Missouri...
  Southeastern Gentry County in northwestern Missouri...
  Northeastern DeKalb County in northwestern Missouri...

* Until 400 PM CDT.
    
* At 323 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Maysville, moving northeast 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...
  Pattonsburg, Jameson, Weatherby, Mcfall, Fairport and Santa Rosa. 

This includes Interstate 35 in Missouri between mile markers 68 and
81.
 
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 4001 9389 3988 9432 3998 9440 4014 9419
      4014 9408
TIME...MOT...LOC 2023Z 231DEG 26KT 3995 9430 

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

$$

CDB
2 follow-up statements
648 
WWUS53 KEAX 242038
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
338 PM CDT Sun Oct 24 2021

MOC063-075-242048-
/O.CAN.KEAX.TO.W.0020.000000T0000Z-211024T2100Z/
Gentry MO-DeKalb MO-
338 PM CDT Sun Oct 24 2021

...THE TORNADO WARNING FOR SOUTHEASTERN GENTRY AND NORTHEASTERN
DEKALB COUNTIES 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 north central
and northwestern Missouri.

LAT...LON 4001 9389 3998 9420 4000 9421 4003 9420
      4003 9422 4004 9422 4014 9419 4014 9407
TIME...MOT...LOC 2038Z 230DEG 29KT 4004 9418 

$$

MOC061-242100-
/O.CON.KEAX.TO.W.0020.000000T0000Z-211024T2100Z/
Daviess MO-
338 PM CDT Sun Oct 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHWESTERN DAVIESS COUNTY...
    
At 338 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Pattonsburg, or 14 miles northeast of Maysville,
moving northeast at 35 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...
Pattonsburg and Jameson. 

This includes Interstate 35 in Missouri between mile markers 72 and
82.
 
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 4001 9389 3998 9420 4000 9421 4003 9420
      4003 9422 4004 9422 4014 9419 4014 9407
TIME...MOT...LOC 2038Z 230DEG 29KT 4004 9418 

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

$$

CDB
364 
WWUS53 KEAX 242051
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
351 PM CDT Sun Oct 24 2021

MOC061-242101-
/O.EXP.KEAX.TO.W.0020.000000T0000Z-211024T2100Z/
Daviess MO-
351 PM CDT Sun Oct 24 2021

...THE TORNADO WARNING FOR NORTHWESTERN DAVIESS COUNTY WILL EXPIRE AT
400 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1000 PM CDT for north central
and northwestern Missouri.

LAT...LON 4001 9389 3998 9420 4000 9421 4003 9420
      4003 9422 4004 9422 4014 9419 4014 9407
TIME...MOT...LOC 2051Z 231DEG 26KT 4010 9409 

$$

CDB

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 24, 12:52 AM CDTSpecial Weather StatementEAXGrundy23 min
Oct 24, 1:26 AM CDTSpecial Weather StatementEAXBuchanan34 min
Oct 24, 5:07 AM CDTFlash Flood WarningEAXGrundy, Harrison, Sullivan5 hr
Oct 24, 8:26 AM CDTRiver Flood WarningEAXCarroll, Chariton, Linn, Livingston37 hr
Oct 24, 2:05 PM CDTSevere Thunderstorm WarningEAXAndrew, Buchanan, Holt40 min
Oct 24, 2:12 PM CDTTornado Warning Tornado observedEAXAndrew, Holt33 min
Oct 24, 2:31 PM CDTTornado WarningEAXAndrew, Buchanan, DeKalb29 min
Oct 24, 2:39 PM CDTTornado WarningEAXAndrew23 min
Oct 24, 2:44 PM CDTSevere Thunderstorm WarningEAXBuchanan, Clinton, DeKalb46 min
Oct 24, 2:51 PM CDTTornado WarningEAXBuchanan, Clinton, DeKalb24 min
Oct 24, 3:26 PM CDTTornado WarningEAXCaldwell, Clinton34 min
Oct 24, 3:50 PM CDTTornado WarningEAXCaldwell, Daviess, Livingston25 min
Oct 24, 4:07 PM CDTSpecial Weather StatementEAXHenry, Johnson23 min
Oct 24, 4:10 PM CDTTornado WarningEAXLivingston35 min
Oct 24, 4:16 PM CDTTornado WarningEAXGrundy, Harrison, Mercer29 min
Oct 24, 4:29 PM CDTSevere Thunderstorm WarningEAXJohnson, Pettis31 min
Oct 24, 4:37 PM CDTTornado WarningEAXLinn, Livingston, Sullivan38 min
Oct 24, 4:56 PM CDTSevere Thunderstorm WarningEAXCooper, Pettis49 min
Oct 24, 4:57 PM CDTTornado WarningEAXCooper, Pettis33 min
Oct 24, 5:10 PM CDTTornado WarningEAXAdair, Linn, Macon, Sullivan35 min
Oct 24, 5:54 PM CDTSevere Thunderstorm WarningEAXAdair, Schuyler17 min

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.