Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 4, NWS Kansas City, MO

March 15, 2021Johnson County, Pettis County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Mar 15, 2021, 6:12 PM CDT for Johnson County, Pettis County, Missouri. It was in force for 48 min. 2 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: Mar 15, 2021, 6:12 PM CDT (23:12 UTC)
Expired: Mar 15, 2021, 7:00 PM CDT
In force: 48 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Johnson County, MO, Pettis County, MO

What was reported inside it

Time	Report	Where	Remark
Mar 15, 6:15 PM CDT	HAIL 1	Knob Noster, MO
Mar 15, 6:51 PM CDT	HAIL 1	2 Wsw Sedalia, MO

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 12:00Z, 11.2 hours before the alert went out and 192 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

842 
WUUS53 KEAX 152312
SVREAX
MOC101-159-160000-
/O.NEW.KEAX.SV.W.0004.210315T2312Z-210316T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
612 PM CDT Mon Mar 15 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Northwestern Pettis County in central Missouri...
  Southeastern Johnson County in west central Missouri...

* Until 700 PM CDT.

* At 612 PM CDT, a severe thunderstorm was located over Knob Noster,
  moving east 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...
  Sedalia, Knob Noster, Whiteman Air Force Base, La Monte, Houstonia,
  Whiteman Afb and Hughesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3862 9365 3882 9364 3894 9326 3879 9316
      3865 9329
TIME...MOT...LOC 2312Z 260DEG 21KT 3875 9360 

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

Blair

2 follow-up statements

472 
WWUS53 KEAX 152332
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
632 PM CDT Mon Mar 15 2021

MOC101-152340-
/O.CAN.KEAX.SV.W.0004.000000T0000Z-210316T0000Z/
Johnson MO-
632 PM CDT Mon Mar 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JOHNSON COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3863 9351 3883 9349 3894 9326 3879 9316
      3865 9329
TIME...MOT...LOC 2330Z 260DEG 21KT 3877 9346 

$$

MOC159-160000-
/O.CON.KEAX.SV.W.0004.000000T0000Z-210316T0000Z/
Pettis MO-
632 PM CDT Mon Mar 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR NORTHWESTERN PETTIS COUNTY...

At 630 PM CDT, a severe thunderstorm was located over La Monte, or 
near Whiteman Air Force Base, moving east at 25 mph. A tornado 
warning is also in effect for central Pettis County.

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...
Sedalia, La Monte and Hughesville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3863 9351 3883 9349 3894 9326 3879 9316
      3865 9329
TIME...MOT...LOC 2330Z 260DEG 21KT 3877 9346 

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

Blair

368 
WWUS53 KEAX 152355
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
655 PM CDT Mon Mar 15 2021

MOC159-160005-
/O.EXP.KEAX.SV.W.0004.000000T0000Z-210316T0000Z/
Pettis MO-
655 PM CDT Mon Mar 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PETTIS COUNTY
WILL EXPIRE AT 700 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. A new severe 
thunderstorm warning remains in effect for eastern Pettis County. 

LAT...LON 3863 9351 3883 9349 3894 9326 3879 9316
      3865 9329
TIME...MOT...LOC 2355Z 260DEG 21KT 3879 9328 

$$

Blair

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 14, 9:54 PM CDT	River Flood Warning	EAX	Buchanan	3 days
Mar 15, 8:45 AM CDT	River Flood Warning	EAX	Atchison, Holt	4 hr
Mar 15, 8:45 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	25 hr
Mar 15, 8:45 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	3 days
Mar 15, 9:31 AM CDT	River Flood Warning	EAX	Daviess, Gentry	49 hr
Mar 15, 10:08 AM CDT	River Flood Warning	EAX	Cooper	22 hr
Mar 15, 10:08 AM CDT	River Flood Warning	EAX	Carroll	4 days
Mar 15, 1:26 PM CDT	River Flood Warning	EAX	Daviess, Livingston	45 hr
Mar 15, 1:26 PM CDT	River Flood Warning	EAX	Linn, Livingston	55 hr
Mar 15, 2:16 PM CDT	River Flood Warning	EAX	Platte	69 hr
Mar 15, 2:16 PM CDT	River Flood Warning	EAX	Platte	62 hr
Mar 15, 4:26 PM CDT	Tornado Warning	EAX	Cass, Jackson	34 min
Mar 15, 4:47 PM CDT	Tornado Warning	EAX	Cass	28 min
Mar 15, 5:07 PM CDT	Tornado Warning	EAX	Cass, Johnson	38 min
Mar 15, 5:14 PM CDT	Tornado Warning	EAX	Cass, Jackson	31 min
Mar 15, 5:38 PM CDT	Tornado Warning	EAX	Johnson	37 min
Mar 15, 5:45 PM CDT	Tornado Warning	EAX	Pettis	31 min
Mar 15, 6:27 PM CDT	Tornado Warning	EAX	Pettis	33 min
Mar 15, 6:52 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Pettis	23 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.