Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Kansas City, MO

June 11, 20215 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2021, 5:08 PM CDT for 5 counties in Missouri. It was in force for 37 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, 5:08 PM CDT (22:08 UTC)
Expired: Jun 11, 2021, 5:45 PM CDT
In force: 37 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Henry County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 75 km from the middle of the area, began a volume at 22:07 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, 5:08 PM CDT	TSTM WND GST 65	Green Ridge, MO	DELAYED REPORT. ESTIMATED 60 TO 65 MPH WIND IN GREEN RIDGE.
Jun 11, 5:09 PM CDT	TSTM WND GST 60	3 W Warrensburg, MO
Jun 11, 5:30 PM CDT	TSTM WND DMG	Knob Noster, MO	DELAYED REPORT. TREE BLOWN DOWN ONTO GARAGE NEAR MCPHERSON AND GRANT. TIME ESTIMATED.
Jun 11, 5:33 PM CDT	TSTM WND GST 61	1 Wnw Whiteman Air Forc, MO
Jun 11, 5:34 PM CDT	TSTM WND GST 60	3 Se Sedalia, MO

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, 12:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 11, 3:54 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.1 hours before the alert went out and 195 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.

219 
WUUS53 KEAX 112208
SVREAX
MOC083-101-107-159-195-112245-
/O.NEW.KEAX.SV.W.0034.210611T2208Z-210611T2245Z/

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

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Northeastern Henry County in west central Missouri...
  Pettis County in central Missouri...
  Southwestern Saline County in central Missouri...
  Southeastern Lafayette County in west central Missouri...
  Eastern Johnson County in west central Missouri...

* Until 545 PM CDT.

* At 508 PM CDT, a severe thunderstorm was located near Green Ridge,
  or near Sedalia, moving southeast at 30 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.

* This severe thunderstorm will be near...
  Sedalia around 515 PM CDT.

This includes Interstate 70 in Missouri between mile markers 59 and
71.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3883 9382 3907 9344 3875 9306 3853 9307
      3854 9328 3851 9330 3851 9351 3841 9352
TIME...MOT...LOC 2208Z 305DEG 24KT 3867 9333 

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

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, 1:41 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Holt	34 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, 5:58 PM CDT	River Flood Warning	EAX	Jackson	81 min

Nearby

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.