Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 91, NWS Kansas City, MO

July 10, 20214 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 10, 2021, 8:11 PM CDT for 4 counties in Missouri. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 10, 2021, 8:11 PM CDT (01:11 UTC)
Expired: Jul 10, 2021, 8:33 PM CDT
In force: 22 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

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

The radar

The Pleasant Hill radar (KEAX), 59 km from the middle of the area, began a volume at 01:14 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.2 hours before the alert went out and 177 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: 1434 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1268 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

593 
WUUS53 KEAX 110111
SVREAX
MOC101-107-159-195-110145-
/O.NEW.KEAX.SV.W.0091.210711T0111Z-210711T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
811 PM CDT Sat Jul 10 2021

The National Weather Service in Pleasant Hill has issued a

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

* Until 845 PM CDT.

* At 811 PM CDT, a severe thunderstorm was located near Concordia,
  moving southeast at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Concordia, Sweet Springs, La Monte, Houstonia, Emma and Aullville. 

This includes Interstate 70 in Missouri between mile markers 51 and
66.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3892 9378 3906 9367 3893 9328 3873 9347
TIME...MOT...LOC 0111Z 299DEG 28KT 3892 9364 

HAIL...1.25IN
WIND...60MPH
 
$$

PP

1 follow-up statement

244 
WWUS53 KEAX 110133
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
833 PM CDT Sat Jul 10 2021

MOC101-107-159-195-110142-
/O.CAN.KEAX.SV.W.0091.000000T0000Z-210711T0145Z/
Pettis MO-Saline MO-Lafayette MO-Johnson MO-
833 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PETTIS...
SOUTHWESTERN SALINE...SOUTHEASTERN LAFAYETTE AND NORTHEASTERN JOHNSON
COUNTIES IS CANCELLED...
                
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 cancelled.

LAT...LON 3892 9378 3906 9367 3893 9328 3873 9347
TIME...MOT...LOC 0132Z 299DEG 28KT 3884 9345 

$$

PP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 7:48 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	27 min
Jul 10, 8:03 PM CDT	Special Weather Statement	EAX	Cass	42 min
Jul 10, 8:07 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	23 min
Jul 10, 8:22 PM CDT	Special Weather Statement	EAX	Chariton, Linn	38 min
Jul 10, 8:57 PM CDT	Special Weather Statement	EAX	Adair, Macon, Randolph	48 min
Jul 10, 10:22 PM CDT	Special Weather Statement	EAX	Henry	53 min
Jul 11, 2:13 AM CDT	River Flood Warning	EAX	Grundy, Livingston	31 hr
Jul 11, 4:14 AM CDT	River Flood Warning	EAX	Linn, Livingston	43 hr
Jul 11, 3:13 PM CDT	River Flood Warning	EAX	Adair, Macon, Putnam, Schuyler	34 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.