Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 21, NWS Kansas City, MO

June 11, 2021Andrew County, Buchanan County, Holt County, Missouri; Atchison County, Doniphan County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2021, 1:41 PM CDT for Andrew County, Buchanan County, Holt County, Missouri; Atchison County, Doniphan County, Kansas. It was in force for 34 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 11, 2021, 1:41 PM CDT (18:41 UTC)
Expired: Jun 11, 2021, 2:15 PM CDT
In force: 34 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, Andrew County, MO, Buchanan County, MO, Holt County, MO

The radar

The Topeka radar (KTWX), 128 km from the middle of the area, began a volume at 18:43 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.

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

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 6.7 hours before the alert went out and 99 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.

929 
WUUS53 KEAX 111841
SVREAX
KSC005-043-MOC003-021-087-111915-
/O.NEW.KEAX.SV.W.0021.210611T1841Z-210611T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
141 PM CDT Fri Jun 11 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...
  Western Buchanan County in northwestern Missouri...
  Holt County in northwestern Missouri...
  Western Andrew County in northwestern Missouri...

* Until 215 PM CDT.

* At 140 PM CDT, severe thunderstorms were located along a line
  extending from Oregon to near Lancaster to near Denison, moving
  east at 30 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...
  Oregon, Forest City and Denton around 145 PM CDT.
  Fillmore around 155 PM CDT.
  Atchison around 200 PM CDT.

Other locations in the path of these severe thunderstorms include
Amazonia, Rushville, Lewis And Clark Village and Savannah.

This includes the following highways...
 Interstate 29 between mile markers 56 and 89.
 Interstate 229 between mile markers 4 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3965 9556 3965 9534 4000 9534 4000 9531
      4003 9536 4018 9534 4018 9507 4013 9504
      4013 9497 4011 9491 3994 9484 3974 9483
      3959 9494 3953 9501 3953 9510 3950 9505
      3942 9515 3942 9556
TIME...MOT...LOC 1840Z 270DEG 26KT 3999 9511 3965 9531 3940 9557 

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

PP

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 1:16 PM CDT	Severe Thunderstorm Warning	EAX	Holt	29 min
Jun 11, 2:12 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, DeKalb, Holt, Platte	63 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, 2:52 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Jackson, Platte	68 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, 3:59 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson	31 min
Jun 11, 4:02 PM CDT	Areal Flood Advisory	EAX	Platte	4 hr
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
Jun 11, 5:58 PM CDT	River Flood Warning	EAX	Jackson	81 min
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

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.