Alert archive / Missouri / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Kansas City, MO

April 30, 2019Clay County, Clinton County, Platte County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 30, 2019, 1:40 AM CDT for Clay County, Clinton County, Platte County, Missouri. It was in force for 35 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: Apr 30, 2019, 1:40 AM CDT (06:40 UTC)
Expired: Apr 30, 2019, 2:15 AM CDT
In force: 35 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Clay County, MO, Clinton County, MO, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 78 km from the middle of the area, began a volume at 06:44 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
Apr 30, 1:50 AM CDT	HAIL 1	Ferrelview, MO	REPORT VIA SOCIAL MEDIA.
Apr 30, 2:13 AM CDT	HAIL 1	Kearney, MO	REPORT VIA SOCIAL MEDIA.

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

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 6.7 hours before the alert went out and 104 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: 1029 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

909 
WUUS53 KEAX 300640
SVREAX
MOC047-049-165-300715-
/O.NEW.KEAX.SV.W.0021.190430T0640Z-190430T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
140 AM CDT Tue Apr 30 2019

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Clay County in west central Missouri...
  Southwestern Clinton County in northwestern Missouri...
  Eastern Platte County in west central Missouri...

* Until 215 AM CDT.

* At 140 AM CDT, a severe thunderstorm was located over Ferrelview,
  or near Platte City, moving northeast at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Kansas City, Liberty, Gladstone, Excelsior Springs, Smithville,
  Kearney, Parkville, Platte City, Plattsburg, Weatherby Lake, Lake
  Waukomis, Trimble, Edgerton, Camden Point, Ferrelview, Holt, Platte
  Woods, Tracy, Mosby and Prathersville.

This includes the following highways...
 Interstate 35 in Missouri between mile markers 16 and 31.
 Interstate 29 between mile markers 6 and 23.
 Interstate 435 between mile markers 23 and 49.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3954 9464 3954 9460 3957 9460 3967 9447
      3927 9422 3920 9475 3937 9485
TIME...MOT...LOC 0640Z 245DEG 38KT 3932 9471 

HAIL...1.00IN
WIND...<50MPH
 
$$

32

2 follow-up statements

165 
WWUS53 KEAX 300703
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
203 AM CDT Tue Apr 30 2019

MOC165-300712-
/O.CAN.KEAX.SV.W.0021.000000T0000Z-190430T0715Z/
Platte MO-
203 AM CDT Tue Apr 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PLATTE 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 3957 9460 3967 9447 3927 9422 3922 9460
TIME...MOT...LOC 0702Z 245DEG 38KT 3942 9443 

$$

MOC047-049-300715-
/O.CON.KEAX.SV.W.0021.000000T0000Z-190430T0715Z/
Clay MO-Clinton MO-
203 AM CDT Tue Apr 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR CLAY AND SOUTHWESTERN CLINTON COUNTIES...

At 202 AM CDT, a severe thunderstorm was located near Kearney, moving
northeast at 45 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Kansas City, Liberty, Gladstone, Excelsior Springs, Smithville,
Kearney, Plattsburg, Trimble, Holt, Mosby and Prathersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3957 9460 3967 9447 3927 9422 3922 9460
TIME...MOT...LOC 0702Z 245DEG 38KT 3942 9443 

HAIL...1.00IN
WIND...<50MPH
 
$$

32

568 
WWUS53 KEAX 300712
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
212 AM CDT Tue Apr 30 2019

MOC047-049-300722-
/O.EXP.KEAX.SV.W.0021.000000T0000Z-190430T0715Z/
Clay MO-Clinton MO-
212 AM CDT Tue Apr 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR CLAY AND SOUTHWESTERN CLINTON
COUNTIES WILL EXPIRE AT 215 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3957 9460 3967 9447 3927 9422 3922 9460
TIME...MOT...LOC 0712Z 245DEG 38KT 3946 9432 

$$

32

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 8:50 PM CDT	River Flood Warning	EAX	Ray	65 hr
Apr 29, 9:00 PM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	4 days
Apr 29, 9:03 PM CDT	River Flood Warning	EAX	Bates	11 days
Apr 29, 9:09 PM CDT	River Flood Warning	EAX	Bates, Cass, Henry	4 days
Apr 29, 9:09 PM CDT	River Flood Warning	EAX	Carroll	4 days
Apr 29, 9:15 PM CDT	River Flood Warning	EAX	Johnson, Pettis	3 days
Apr 29, 9:15 PM CDT	River Flood Warning	EAX	Cooper, Saline	8 days
Apr 29, 9:19 PM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	5 days
Apr 29, 10:04 PM CDT	River Flood Warning	EAX	Buchanan, Platte	4 days
Apr 29, 10:04 PM CDT	River Flood Warning	EAX	Clay, Jackson, Ray	6 days
Apr 29, 10:04 PM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	18 days
Apr 29, 10:04 PM CDT	River Flood Warning	EAX	Cooper, Howard	18 days
Apr 30, 1:27 AM CDT	Special Weather Statement	EAX	Platte	33 min
Apr 30, 7:50 AM CDT	Areal Flood Advisory	EAX	Bates, Carroll, Cass, Henry, Jackson, Johnson and 2 more	3 hr
Apr 30, 9:02 AM CDT	River Flood Warning	EAX	Carroll, Chariton	5 days
Apr 30, 9:02 AM CDT	River Flood Warning	EAX	Howard	36 hr
Apr 30, 9:02 AM CDT	River Flood Warning	EAX	Cooper	56 hr
Apr 30, 10:44 AM CDT	Areal Flood Warning	EAX	Bates, Cass, Henry, Jackson, Johnson, Lafayette	9 hr
Apr 30, 1:26 PM CDT	River Flood Warning	EAX	Clay, Ray	7 hr
Apr 30, 2:45 PM CDT	Areal Flood Warning	EAX	Carroll, Chariton, Cooper, Howard, Macon, Pettis and 2 more	6 hr
Apr 30, 3:50 PM CDT	Flash Flood Warning	EAX	Cass, Clay, Jackson, Platte	7 hr
Apr 30, 4:15 PM CDT	River Flood Warning	EAX	Chariton, Macon	3 days
Apr 30, 4:24 PM CDT	River Flood Warning	EAX	Jackson	28 hr
Apr 30, 5:37 PM CDT	Flash Flood Warning	EAX	Bates, Cass, Jackson, Johnson, Lafayette	7 hr
Apr 30, 6:44 PM CDT	Flash Flood Warning	EAX	Bates, Carroll, Cass, Chariton, Henry, Howard and 7 more	4 hr
Apr 30, 6:56 PM CDT	Special Weather Statement	EAX	Bates	19 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2019 Every severe thunderstorm warning in 2019

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.