Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 151, NWS Kansas City, MO

December 15, 20214 counties in Missouri; Atchison County, Doniphan County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Dec 15, 2021, 4:43 PM CST for 4 counties in Missouri; Atchison County, Doniphan County, Kansas. It was in force for 62 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: Dec 15, 2021, 4:43 PM CST (22:43 UTC)
Expired: Dec 15, 2021, 5:45 PM CST
In force: 62 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Possible
Damage threat: Destructive
Hail: 0.75 in
Wind: 80.0 mph

Counties Atchison County, KS, Doniphan County, KS, Andrew County, MO, Buchanan County, MO, Holt County, MO, Platte County, MO

The radar

The Topeka radar (KTWX), 113 km from the middle of the area, began a volume at 22:47 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

Time	Report	Where	Remark
Dec 15, 5:15 PM CST	TSTM WND DMG	1 Ene Lancaster, KS	ROOF DAMAGE TO BUILDING AT 294TH AND KINGMAN.
Dec 15, 5:15 PM CST	TSTM WND DMG	4 W Atchison, KS	DAMAGE TO A POWER POLE AT 286TH AND NEOSHO.

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.

Issued	Product	Office	Lasted
Dec 15, 1:23 PM CST	Tornado Watch	SPC	7 hr
Dec 15, 3:18 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.7 hours before the alert went out and 79 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: 1036 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 466 m²/s²
0-3 km storm-relative helicity: 477 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

735 
WUUS53 KEAX 152243
SVREAX
KSC005-043-MOC003-021-087-165-152345-
/O.NEW.KEAX.SV.W.0151.211215T2243Z-211215T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
443 PM CST Wed Dec 15 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Doniphan County in northeastern Kansas...
  Atchison County in northeastern Kansas...
  Buchanan County in northwestern Missouri...
  Southeastern Holt County in northwestern Missouri...
  Northwestern Platte County in west central Missouri...
  Southern Andrew County in northwestern Missouri...

* Until 545 PM CST.

* At 442 PM CST, severe thunderstorms were located along a line
  extending from near Hiawatha to near Willis to near Holton, moving
  northeast at 85 mph.

  THESE ARE DESTRUCTIVE STORMS FOR parts of northeastern Kansas and 
  north western Missouri.

  HAZARD...80 mph wind gusts.

  SOURCE...Trained weather spotters.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be heavily damaged. Expect 
           considerable damage to roofs, windows, and vehicles. 
           Extensive tree damage and power outages are likely.

* Locations impacted include...
  St. Joseph, Atchison, Savannah, Wathena, Elwood, Highland, Troy,
  Country Club Villa, Country Club, Agency, Effingham, Dearborn,
  Amazonia, Rushville, Lancaster, Muscotah, Denton, Lewis And Clark
  Village, Doniphan and Easton.

This includes the following highways...
 Interstate 29 between mile markers 28 and 60.
 Interstate 229 between mile markers 0 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across parts of northeastern Kansas. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows! A Tornado 
Watch remains in effect until 800 PM CST for northeastern 
Kansas...and northwestern Missouri.

&&

LAT...LON 3965 9557 3965 9534 3985 9534 3998 9461
      3952 9462 3943 9498 3942 9509 3942 9557
TIME...MOT...LOC 2242Z 234DEG 76KT 3992 9550 3974 9553 3947 9567 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH

$$

CDB

2 follow-up statements

897 
WWUS53 KEAX 152300
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
500 PM CST Wed Dec 15 2021

KSC005-043-MOC003-021-087-165-152345-
/O.CON.KEAX.SV.W.0151.000000T0000Z-211215T2345Z/
Doniphan KS-Atchison KS-Buchanan MO-Holt MO-Platte MO-Andrew MO-
500 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CST
FOR DONIPHAN...ATCHISON...BUCHANAN...SOUTHEASTERN HOLT...NORTHWESTERN
PLATTE AND SOUTHERN ANDREW COUNTIES...

At 459 PM CST, a severe thunderstorm was located near Effingham, or 8
miles southeast of Horton, moving northeast at 65 mph.

THIS IS A DESTRUCTIVE STORM FOR Atchison and Doniphan County, KS and 
moving into Buchanan County, MO
.

HAZARD...80 mph wind gusts.

SOURCE...Trained weather spotters.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
St. Joseph, Atchison, Savannah, Wathena, Elwood, Highland, Troy,
Country Club Villa, Country Club, Agency, Effingham, Dearborn,
Amazonia, Rushville, Lancaster, Muscotah, Denton, Lewis And Clark
Village, Doniphan and Easton.

This includes the following highways...
 Interstate 29 between mile markers 28 and 60.
 Interstate 229 between mile markers 0 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

This is a DANGEROUS SITUATION. This storm is producing widespread 
wind damage across the warning area. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.

&&

LAT...LON 3965 9557 3965 9534 3985 9534 3998 9461
      3952 9462 3943 9498 3942 9509 3942 9557
TIME...MOT...LOC 2259Z 241DEG 58KT 3957 9541 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH

$$

CDB

291 
WWUS53 KEAX 152335
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
535 PM CST Wed Dec 15 2021

MOC087-152345-
/O.CAN.KEAX.SV.W.0151.000000T0000Z-211215T2345Z/
Holt MO-
535 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HOLT COUNTY IS
CANCELLED...
    
The severe 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 800 PM CST for northeastern
Kansas...and northwestern Missouri.

A Severe Thunderstorm Watch remains in effect until 700 PM CST for
northeastern Kansas...and northwestern and west central Missouri.

LAT...LON 3966 9508 3990 9502 3990 9499 3992 9499
      3998 9461 3952 9462 3943 9498 3942 9509
TIME...MOT...LOC 2335Z 234DEG 76KT 4002 9460 

$$

KSC005-043-MOC003-021-165-152345-
/O.CON.KEAX.SV.W.0151.000000T0000Z-211215T2345Z/
Doniphan KS-Atchison KS-Buchanan MO-Platte MO-Andrew MO-
535 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CST
FOR SOUTHEASTERN DONIPHAN...EASTERN ATCHISON...BUCHANAN...
NORTHWESTERN PLATTE AND SOUTHERN ANDREW COUNTIES...

At 535 PM CST, a severe thunderstorm was located over Union Star, or
13 miles northeast of Savannah, moving northeast at 85 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Trained weather spotters.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
St. Joseph, Savannah, Wathena, Elwood, Country Club Villa, Country
Club, Agency, Dearborn, Amazonia, Rushville, Lewis And Clark Village,
Doniphan, Easton, De Kalb, Cosby, Iatan, St. Joseph Airport, Faucett,
Bean Lake and Lewis And Clark Vi.

This includes the following highways...
 Interstate 29 between mile markers 28 and 61.
 Interstate 229 between mile markers 0 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for northeastern
Kansas...and northwestern Missouri.

This is a DANGEROUS SITUATION. This storm is producing widespread 
wind damage. SEEK SHELTER NOW inside a sturdy structure and stay 
away from windows.

&&

LAT...LON 3966 9508 3990 9502 3990 9499 3992 9499
      3998 9461 3952 9462 3943 9498 3942 9509
TIME...MOT...LOC 2335Z 234DEG 76KT 4002 9460 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Blair

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 15, 4:03 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Andrew, Atchison, Holt, Nodaway, Worth	72 min
Dec 15, 4:51 PM CST	Tornado Warning	EAX	Andrew, Holt, Nodaway	39 min
Dec 15, 5:03 PM CST	Tornado Warning	EAX	Andrew, Buchanan	27 min
Dec 15, 5:12 PM CST	Severe Thunderstorm Warning Destructive damage threat	EAX	Andrew, Buchanan, Daviess, DeKalb, Gentry, Harrison and 3 more	78 min
Dec 15, 5:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	Clay, Clinton, DeKalb, Platte	57 min
Dec 15, 5:31 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	Johnson, Miami	44 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Severe Thunderstorm Warnings in Kansas, 2021 Every severe thunderstorm warning 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.