Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Kansas City, MO

June 25, 2021Atchison County, Leavenworth County, Wyandotte County, Kansas; Platte County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 25, 2021, 4:21 AM CDT for Atchison County, Leavenworth County, Wyandotte County, Kansas; Platte County, Missouri. It was in force for 39 min. 1 report 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 25, 2021, 4:21 AM CDT (09:21 UTC)
Expired: Jun 25, 2021, 5:00 AM CDT
In force: 39 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atchison County, KS, Leavenworth County, KS, Wyandotte County, KS, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 89 km from the middle of the area, began a volume at 09:19 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 25, 4:45 AM CDT	TSTM WND DMG	2 Se Potter, KS	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SE POTTER. 30X40 BARN BLOWN DOWN. LARGE TREE LIMBS (APPROX 12 IN. DIAMETER) SNAPPED. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 9.4 hours before the alert went out and 68 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: 2766 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1424 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 404 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 23.2

Open this sounding in Storm Lab

The text

As transmitted.

151 
WUUS53 KEAX 250921
SVREAX
KSC005-103-209-MOC165-251000-
/O.NEW.KEAX.SV.W.0067.210625T0921Z-210625T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
421 AM CDT Fri Jun 25 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Northwestern Wyandotte County in northeastern Kansas...
  Leavenworth County in northeastern Kansas...
  Southeastern Atchison County in northeastern Kansas...
  Central Platte County in west central Missouri...

* Until 500 AM CDT.

* At 421 AM CDT, a severe thunderstorm was located over Oskaloosa,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Leavenworth, Lansing, Weston, Kansas City, Easton, Fairmount,
  Farley, Iatan, Fort Leavenworth, Bean Lake, Stillings, Beverly,
  East Leavenworth, Lowemont, Jarbalo, Potter and Wolcott.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3942 9518 3953 9495 3953 9493 3936 9482
      3918 9480 3915 9518
TIME...MOT...LOC 0921Z 253DEG 33KT 3921 9533 

HAIL...1.00IN
WIND...60MPH
 
$$

Leighton

2 follow-up statements

019 
WWUS53 KEAX 250940
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
440 AM CDT Fri Jun 25 2021

KSC005-103-209-MOC165-251000-
/O.CON.KEAX.SV.W.0067.000000T0000Z-210625T1000Z/
Wyandotte KS-Leavenworth KS-Atchison KS-Platte MO-
440 AM CDT Fri Jun 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR NORTHWESTERN WYANDOTTE...LEAVENWORTH...SOUTHEASTERN ATCHISON AND
CENTRAL PLATTE COUNTIES...

At 439 AM CDT, a severe thunderstorm was located near Easton, or 9
miles northeast of Oskaloosa, moving northeast at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Leavenworth, Lansing, Weston, Kansas City, Easton, Fairmount, Farley,
Iatan, Fort Leavenworth, Bean Lake, Stillings, Beverly, East
Leavenworth, Lowemont, Jarbalo, Potter and Wolcott.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3942 9518 3953 9495 3953 9493 3936 9482
      3918 9480 3915 9518
TIME...MOT...LOC 0939Z 245DEG 21KT 3929 9517 

HAIL...1.00IN
WIND...60MPH
 
$$

Leighton

910 
WWUS53 KEAX 251000
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
500 AM CDT Fri Jun 25 2021

KSC005-103-209-MOC165-251010-
/O.EXP.KEAX.SV.W.0067.000000T0000Z-210625T1000Z/
Wyandotte KS-Leavenworth KS-Atchison KS-Platte MO-
500 AM CDT Fri Jun 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WYANDOTTE...
LEAVENWORTH...SOUTHEASTERN ATCHISON AND CENTRAL PLATTE COUNTIES HAS
EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 3942 9518 3953 9495 3953 9493 3936 9482
      3918 9480 3915 9518
TIME...MOT...LOC 1000Z 253DEG 33KT 3934 9495 

$$

Leighton

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 7:17 PM CDT	Severe Thunderstorm Warning	EAX	Doniphan	43 min
Jun 24, 7:55 PM CDT	Special Weather Statement	EAX	Doniphan	50 min
Jun 24, 8:27 PM CDT	Flash Flood Warning	EAX	Doniphan	16 hr
Jun 24, 8:37 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	38 min
Jun 24, 9:00 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Leavenworth	60 min
Jun 24, 9:33 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Leavenworth, Wyandotte	57 min
Jun 24, 10:25 PM CDT	Areal Flood Advisory	EAX	Atchison, Leavenworth	3 hr
Jun 24, 10:43 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth, Wyandotte	32 min
Jun 25, 1:59 AM CDT	River Flood Warning	EAX	Doniphan	63 hr
Jun 25, 2:02 AM CDT	River Flood Warning	EAX	Atchison	27 hr
Jun 25, 2:03 AM CDT	River Flood Warning	EAX	Leavenworth	65 hr
Jun 25, 2:04 AM CDT	River Flood Warning	EAX	Leavenworth, Wyandotte	27 hr
Jun 25, 3:59 AM CDT	Special Weather Statement	EAX	Leavenworth, Wyandotte	46 min
Jun 25, 4:46 AM CDT	Areal Flood Advisory	EAX	Atchison, Johnson, Leavenworth, Wyandotte	3 hr
Jun 25, 8:36 AM CDT	River Flood Warning	EAX	Atchison, Leavenworth	54 hr
Jun 25, 8:38 AM CDT	River Flood Warning	EAX	Leavenworth	59 hr
Jun 25, 9:23 AM CDT	Areal Flood Warning	EAX	Doniphan	12 hr
Jun 25, 2:11 PM CDT	Special Weather Statement	EAX	Miami	49 min
Jun 25, 3:21 PM CDT	Special Weather Statement	EAX	Johnson	39 min
Jun 25, 3:54 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Wyandotte	24 min
Jun 25, 3:59 PM CDT	Flash Flood Warning	EAX	Miami	6 hr
Jun 25, 4:14 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Leavenworth, Wyandotte	46 min
Jun 25, 4:40 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Linn, Miami	35 min
Jun 25, 5:06 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Linn, Miami	39 min
Jun 25, 5:57 PM CDT	Flash Flood Warning	EAX	Linn, Miami	6 hr
Jun 24, 7:03 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	42 min
Jun 24, 7:24 PM CDT	Special Weather Statement	EAX	Mercer	51 min
Jun 24, 7:39 PM CDT	Flash Flood Warning	EAX	Daviess, DeKalb, Gentry, Grundy, Harrison, Mercer and 1 more	6 hr
Jun 24, 7:45 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, DeKalb, Gentry, Nodaway	45 min
Jun 24, 8:12 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Daviess, DeKalb, Gentry, Grundy, Harrison and 2 more	48 min
Jun 24, 8:14 PM CDT	Severe Thunderstorm Warning	EAX	Mercer, Putnam	24 min
Jun 24, 8:16 PM CDT	River Flood Warning	EAX	Chariton, Macon	19 hr
Jun 24, 8:16 PM CDT	River Flood Warning	EAX	Andrew, Nodaway	14 hr
Jun 24, 8:16 PM CDT	River Flood Warning	EAX	Andrew, Buchanan	3 days
Jun 24, 8:16 PM CDT	River Flood Warning	EAX	Carroll, Chariton	9 days
Jun 24, 8:48 PM CDT	Flash Flood Warning Considerable damage threat	EAX	Mercer	3 hr
Jun 24, 8:51 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Daviess, DeKalb, Grundy, Harrison, Linn and 4 more	54 min
Jun 24, 9:13 PM CDT	Tornado Warning	EAX	Grundy, Sullivan	17 min
Jun 24, 9:29 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Caldwell, Carroll, Chariton, Daviess, Grundy and 7 more	61 min
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Cooper, Saline	11 days
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Cooper	60 hr
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Carroll	8 days
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Johnson, Pettis	71 hr
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	9 days
Jun 24, 9:35 PM CDT	River Flood Warning	EAX	Cooper, Howard	10 days
Jun 24, 9:40 PM CDT	Tornado Warning	EAX	Putnam, Sullivan	20 min
Jun 24, 9:58 PM CDT	Tornado Warning	EAX	Adair, Sullivan	17 min
Jun 24, 10:18 PM CDT	Tornado Warning	EAX	Carroll, Lafayette, Saline	27 min
Jun 24, 10:24 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Carroll, Chariton, Howard, Lafayette, Linn and 6 more	51 min
Jun 24, 11:17 PM CDT	Special Weather Statement	EAX	Cooper, Howard, Randolph, Saline	58 min
Jun 25, 12:57 AM CDT	Flash Flood Warning	EAX	Caldwell, Clinton, Daviess, DeKalb	10 hr
Jun 25, 1:17 AM CDT	Areal Flood Warning	EAX	Daviess, DeKalb, Gentry, Grundy, Harrison, Mercer and 1 more	12 hr
Jun 25, 1:28 AM CDT	Areal Flood Advisory	EAX	Carroll, Chariton, Cooper, Howard, Lafayette, Saline	3 hr
Jun 25, 1:34 AM CDT	River Flood Warning	EAX	Clay, Ray	34 hr
Jun 25, 2:07 AM CDT	River Flood Warning	EAX	Jackson, Lafayette, Ray	4 days
Jun 25, 2:10 AM CDT	River Flood Warning	EAX	Carroll, Lafayette, Saline	4 days
Jun 25, 2:11 AM CDT	Flash Flood Warning Considerable damage threat	EAX	Andrew, Holt, Nodaway	10 hr
Jun 25, 2:13 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Saline	8 days
Jun 25, 2:20 AM CDT	Areal Flood Warning	EAX	Atchison, Holt, Nodaway	12 hr
Jun 25, 2:26 AM CDT	River Flood Warning	EAX	Atchison, Holt	6 hr
Jun 25, 2:26 AM CDT	River Flood Warning	EAX	Grundy, Livingston	13 hr
Jun 25, 3:13 AM CDT	Flash Flood Warning Considerable damage threat	EAX	Carroll, Chariton, Howard, Saline	7 hr
Jun 25, 4:28 AM CDT	Flash Flood Warning	EAX	Caldwell, Carroll, Lafayette, Livingston, Ray, Saline	4 hr
Jun 25, 4:55 AM CDT	Flash Flood Warning	EAX	Carroll, Lafayette, Ray, Saline	6 hr
Jun 25, 5:24 AM CDT	Flash Flood Warning	EAX	Cooper, Howard	5 hr
Jun 25, 7:25 AM CDT	Areal Flood Advisory	EAX	Cooper, Pettis, Saline	4 hr
Jun 25, 8:13 AM CDT	Areal Flood Warning	EAX	Buchanan, Caldwell, Clay, Clinton, Platte, Ray	3 hr
Jun 25, 8:40 AM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	8 days
Jun 25, 9:12 AM CDT	Areal Flood Warning	EAX	Caldwell, Carroll, Chariton, Cooper, Daviess, Howard and 7 more	4 days
Jun 25, 1:25 PM CDT	Areal Flood Warning	EAX	Buchanan, Clay, Clinton, Platte	9 hr
Jun 25, 2:53 PM CDT	Special Weather Statement	EAX	Cass	67 min
Jun 25, 3:42 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Johnson	33 min
Jun 25, 4:22 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	38 min
Jun 25, 4:31 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson	44 min
Jun 25, 4:52 PM CDT	Tornado Warning	EAX	Henry, Johnson	23 min
Jun 25, 4:56 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Pettis	49 min
Jun 25, 4:57 PM CDT	Flash Flood Warning	EAX	Henry, Johnson	6 hr
Jun 25, 6:10 PM CDT	Flash Flood Warning	EAX	Cooper, Howard, Saline	6 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2021 Severe Thunderstorm Warnings in Missouri, 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.