Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Kansas City, MO

June 11, 2021Atchison County, Doniphan County, Leavenworth County, Kansas; 5 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2021, 2:12 PM CDT for Atchison County, Doniphan County, Leavenworth County, Kansas; 5 counties in Missouri. It was in force for 63 min. 5 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: Jun 11, 2021, 2:12 PM CDT (19:12 UTC)
Expired: Jun 11, 2021, 3:15 PM CDT
In force: 63 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

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

The radar

The Pleasant Hill radar (KEAX), 117 km from the middle of the area, began a volume at 19:11 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
Jun 11, 2:20 PM CDT	TSTM WND DMG	Saint Joseph, MO	TREES AND BRANCHES 6 INCHES IN DIAMETER DOWN. 1.75 INCHES OF RAIN.
Jun 11, 2:36 PM CDT	HAIL 2	2 Nne Country Club Vill, MO
Jun 11, 2:38 PM CDT	TSTM WND GST 60	Saint Joseph Airport, MO
Jun 11, 2:45 PM CDT	TSTM WND DMG	Amazonia, MO	2 INCH DIAMETER TREE DOWN.
Jun 11, 2:51 PM CDT	TSTM WND DMG	4 Wsw Leavenworth, KS	TREES DOWN. ALL TREES WERE DEAD WITH DIAMETERS APPROXIMATELY 20 INCHES.

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
Jun 11, 8:30 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 11, 12:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 7.2 hours before the alert went out and 95 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: 2135 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1019 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.2

Open this sounding in Storm Lab

The text

As transmitted.

362 
WUUS53 KEAX 111912
SVREAX
KSC005-043-103-MOC003-021-063-087-165-112015-
/O.NEW.KEAX.SV.W.0022.210611T1912Z-210611T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
212 PM CDT Fri Jun 11 2021

The National Weather Service in Pleasant Hill has issued a

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

* Until 315 PM CDT.

* At 212 PM CDT, severe thunderstorms were located along a line
  extending from near Savannah to Lewis And Clark Village to near
  Ozawkie, moving southeast at 25 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Severe thunderstorms will be near...
  Amazonia and Rushville around 215 PM CDT.
  Savannah and Lewis And Clark Village around 220 PM CDT.
  St. Joseph, Country Club Villa and Country Club around 225 PM CDT.

Other locations in the path of these severe thunderstorms include
Weston, Dearborn, Tonganoxie, Camden Point and Tracy.

This includes the following highways...
 Interstate 29 between mile markers 21 and 69.
 Interstate 229 between mile markers 0 and 14.
 Kansas Turnpike between mile markers 206 and 209.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3959 9529 3990 9509 4013 9497 4010 9460
      4004 9460 4003 9452 3948 9469 3896 9519
      3942 9518 3943 9549
TIME...MOT...LOC 1912Z 295DEG 23KT 3993 9488 3956 9507 3925 9539 

HAIL...1.00IN
WIND...70MPH
 
$$

PP

3 follow-up statements

255 
WWUS53 KEAX 111940
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
240 PM CDT Fri Jun 11 2021

KSC005-043-103-MOC003-021-063-087-165-112015-
/O.CON.KEAX.SV.W.0022.000000T0000Z-210611T2015Z/
Doniphan KS-Leavenworth KS-Atchison KS-Buchanan MO-Holt MO-Platte MO-
Andrew MO-DeKalb MO-
240 PM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTHEASTERN DONIPHAN...LEAVENWORTH...CENTRAL ATCHISON...
BUCHANAN...SOUTHEASTERN HOLT...NORTHWESTERN PLATTE...ANDREW AND
NORTHWESTERN DEKALB COUNTIES...

At 240 PM CDT, severe thunderstorms were located along a line
extending from 7 miles northwest of Clarksdale to near Weston to
McLouth, moving east at 25 mph.

HAZARD...Two inch hail and 70 mph wind gusts.

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...
  Dearborn, Tracy, Camden Point, Leavenworth and Lansing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3959 9529 3990 9509 4013 9497 4010 9460
      4004 9460 4003 9452 3948 9469 3896 9519
      3942 9518 3943 9549
TIME...MOT...LOC 1940Z 270DEG 23KT 3986 9467 3949 9487 3918 9519 

HAIL...2.00IN
WIND...70MPH
 
$$

PP

607 
WWUS53 KEAX 111956
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
256 PM CDT Fri Jun 11 2021

MOC087-112006-
/O.CAN.KEAX.SV.W.0022.000000T0000Z-210611T2015Z/
Holt MO-
256 PM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HOLT COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
northeastern Kansas...and northwestern Missouri. A Severe
Thunderstorm Watch also remains in effect until 700 PM CDT for
northeastern Kansas...and northwestern and west central Missouri.

LAT...LON 3966 9498 3982 9491 4004 9484 4004 9460
      4003 9452 3948 9469 3896 9519 3942 9518
TIME...MOT...LOC 1956Z 295DEG 23KT 3982 9456 3945 9476 3914 9508 

$$

KSC005-043-103-MOC003-021-063-165-112015-
/O.CON.KEAX.SV.W.0022.000000T0000Z-210611T2015Z/
Doniphan KS-Leavenworth KS-Atchison KS-Buchanan MO-Platte MO-
Andrew MO-DeKalb MO-
256 PM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR EAST CENTRAL DONIPHAN...LEAVENWORTH...SOUTHEASTERN ATCHISON...
BUCHANAN...NORTHWESTERN PLATTE...SOUTHEASTERN ANDREW AND NORTHWESTERN
DEKALB COUNTIES...

At 256 PM CDT, severe thunderstorms were located along a line
extending from Clarksdale to Camden Point to near Tonganoxie, moving
southeast at 25 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
St. Joseph, Leavenworth, Lansing, Savannah, Tonganoxie, Weston,
Wathena, Elwood, Country Club Villa, Country Club, Agency, Dearborn,
Camden Point, Union Star, Amazonia, Rushville, Easton, Tracy, Lewis
And Clark Village and Reno.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3966 9498 3982 9491 4004 9484 4004 9460
      4003 9452 3948 9469 3896 9519 3942 9518
TIME...MOT...LOC 1956Z 295DEG 23KT 3982 9456 3945 9476 3914 9508 

HAIL...1.25IN
WIND...70MPH
 
$$

PP

293 
WWUS53 KEAX 112010
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
310 PM CDT Fri Jun 11 2021

KSC005-043-103-MOC003-021-063-165-112020-
/O.EXP.KEAX.SV.W.0022.000000T0000Z-210611T2015Z/
Doniphan KS-Leavenworth KS-Atchison KS-Buchanan MO-Platte MO-
Andrew MO-DeKalb MO-
310 PM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL DONIPHAN...
LEAVENWORTH...SOUTHEASTERN ATCHISON...BUCHANAN...NORTHWESTERN
PLATTE...SOUTHEASTERN ANDREW AND NORTHWESTERN DEKALB COUNTIES WILL
EXPIRE AT 315 PM CDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail and gusty winds are still
possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
northeastern Kansas...and northwestern Missouri. A Severe
Thunderstorm Watch also remains in effect until 700 PM CDT for
northeastern Kansas...and northwestern and west central Missouri.

LAT...LON 3966 9498 3982 9491 4004 9484 4004 9460
      4003 9452 3948 9469 3896 9519 3942 9518
TIME...MOT...LOC 2010Z 270DEG 23KT 3979 9446 3942 9466 3911 9498 

$$

PP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 1:16 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	29 min
Jun 11, 1:41 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	34 min
Jun 11, 2:52 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	68 min
Jun 11, 3:59 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami, Wyandotte	31 min
Jun 11, 4:02 PM CDT	Areal Flood Advisory	EAX	Leavenworth, Wyandotte	4 hr
Jun 11, 4:57 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	48 min
Jun 11, 5:42 PM CDT	Severe Thunderstorm Warning	EAX	Linn	33 min
Jun 11, 5:58 PM CDT	River Flood Warning	EAX	Johnson	81 min
Jun 11, 12:04 PM CDT	Special Weather Statement	EAX	Atchison	41 min
Jun 11, 12:10 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	21 min
Jun 11, 2:44 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clay, Clinton, DeKalb, Platte	46 min
Jun 11, 2:49 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette, Ray	41 min
Jun 11, 3:26 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clay, Clinton, Jackson, Ray	34 min
Jun 11, 3:28 PM CDT	Special Weather Statement	EAX	Lafayette	47 min
Jun 11, 3:37 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson, Lafayette, Ray	38 min
Jun 11, 3:57 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Jackson, Ray	14 min
Jun 11, 4:07 PM CDT	Special Weather Statement	EAX	Pettis	38 min
Jun 11, 4:14 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson, Johnson, Lafayette, Ray	46 min
Jun 11, 4:25 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette, Pettis, Saline	35 min
Jun 11, 4:42 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson, Pettis	33 min
Jun 11, 5:08 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Lafayette, Pettis, Saline	37 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.