Alert archive / Missouri / Tornado Warnings in 2018

Tornado Warning 6, NWS Kansas City, MO

May 2, 2018Cass County, Jackson County, Missouri; Johnson County, Miami County, Kansas

NWS Kansas City, MO issued this tornado warning at May 2, 2018, 9:09 PM CDT for Cass County, Jackson County, Missouri; Johnson County, Miami County, Kansas. It was in force for 36 min. 12 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: May 2, 2018, 9:09 PM CDT (02:09 UTC)
Expired: May 2, 2018, 9:45 PM CDT
In force: 36 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Johnson County, KS, Miami County, KS, Cass County, MO, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 22 km from the middle of the area, began a volume at 02:09 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
May 2, 9:09 PM CDT	TORNADO	2 Nw Stanley, KS	DELAYED REPORT: OVER 100 HEALTHY TREES REPORTED DAMAGED, RANGING FROM 12 TO 22 INCHES IN DIAMETER. MOST WERE SNAPPED. ALSO SOME ROOF AND CHIMNEY DAMAGE.
May 2, 9:12 PM CDT	TORNADO	2 Nne Stanley, KS	DELAYED REPORT: 23 WINDOWS BLOWN OUT; MINOR ROOF DAMAGE AT OVERLAND TRAIL MIDDLE SCHOOL.
May 2, 9:15 PM CDT	TSTM WND DMG	5 S Overland Park, KS	DELAYED REPORT. POWER LINES DOWN AT METCALF AND 135TH. NEARBY MULTIPLE TREES 8 INCHES IN DIAMETER ALSO DOWN. TIME MATCHED TO RADAR.
May 2, 9:15 PM CDT	TSTM WND DMG	5 Sw Leawood, KS	DELAYED REPORT. MULTIPLE WINDOWS BLOWN OUT AND MINOR ROOF DAMAGE REPORTED AT MIDDLE SCHOOL NEAR 135TH AND NALL AVE. NEARBY POWER POLES SNAPPED. TIME MATCHED TO RADAR.
May 2, 9:15 PM CDT	TSTM WND DMG	5 W Grandview, KS	POWER POLES SNAPPED 133RD AND MISSION IN LEAWOOD
May 2, 9:15 PM CDT	TORNADO	3 Ne Stanley, KS	DELAYED REPORT: WINDOWS BLOWN OUT; MINOR ROOF DAMAGE.
May 2, 9:18 PM CDT	TSTM WND GST 0	3 N Grandview, MO	60-70 MPH WINDS AT THE GRANDVIEW TRIANGLE
May 2, 9:18 PM CDT	TORNADO	4 W Belton, MO	CONFIRMED TORNADO ON GROUND WEST OF BELTON
May 2, 9:23 PM CDT	TSTM WND DMG	2 Ne Grandview, MO	DELAYED REPORT FROM SOCIAL MEDIA. LARGE TREE DOWN ON VEHICLE. TIME MATCHED TO RADAR.
May 2, 9:23 PM CDT	TSTM WND DMG	Belton, MO	DELAYED REPORT. MULTIPLE LARGE TREES DOWN IN BELTON. TIME MATCHED TO RADAR.
May 2, 9:25 PM CDT	TSTM WND DMG	Grandview, MO	SIGNS DOWN AND TREE DAMAGE AT THE MCDONALDS NEAR HARRY S TRUMAN ROAD
May 2, 9:43 PM CDT	TSTM WND GST 70	Pleasant Hill, MO	ESTIMATED 60 TO 70

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
May 2, 5:27 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.2 hours before the alert went out and 219 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: 1170 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted.

477 
WFUS53 KEAX 030209
TOREAX
KSC091-121-MOC037-095-030245-
/O.NEW.KEAX.TO.W.0006.180503T0209Z-180503T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
909 PM CDT WED MAY 2 2018

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Northeastern Miami County in east central Kansas...
  Southeastern Johnson County in east central Kansas...
  Northern Cass County in west central Missouri...
  Southern Jackson County in west central Missouri...

* Until 945 PM CDT.

* At 909 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located
  along a line extending from near Olathe to near Spring Hill, moving
  east at 50 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Kansas City, Overland Park, Olathe, Lee's Summit, Blue Springs,
  Lenexa, Leawood, Raytown, Grandview, Belton, Raymore, Grain Valley,
  Harrisonville, Pleasant Hill, Oak Grove, Spring Hill, Greenwood,
  Peculiar, Lake Lotawana and Lake Winnebago.

This includes the following highways...
 Interstate 70 in Missouri near mile marker 29.
 Interstate 35 in Kansas between mile markers 217 and 221.
 Interstate 470 between mile markers 0 and 12.
 Interstate 435 between mile markers 70 and 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3869 9483 3881 9479 3892 9481 3902 9411
      3871 9412 3867 9413
TIME...MOT...LOC 0209Z 266DEG 45KT 3887 9475 3880 9475 3873 9476 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Kurtz/Gitro

2 follow-up statements

799 
WWUS53 KEAX 030221
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
921 PM CDT WED MAY 2 2018

KSC091-121-MOC037-095-030245-
/O.CON.KEAX.TO.W.0006.000000T0000Z-180503T0245Z/
Miami KS-Johnson KS-Cass MO-Jackson MO-
921 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
NORTHEASTERN MIAMI...SOUTHEASTERN JOHNSON...NORTHERN CASS AND
SOUTHERN JACKSON COUNTIES...
    
At 920 PM CDT, tornado producing storms were located along a line
extending from near Grandview to near Belton to near Cleveland,
moving east at 55 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Kansas City, Overland Park, Lee's Summit, Blue Springs, Leawood,
Raytown, Grandview, Belton, Raymore, Grain Valley, Harrisonville,
Pleasant Hill, Oak Grove, Greenwood, Peculiar, Lake Lotawana, Lake
Winnebago, Lone Jack, Cleveland and Baldwin Park.

This includes the following highways...
 Interstate 70 in Missouri near mile marker 29.
 Interstate 470 between mile markers 0 and 12.
 Interstate 435 between mile markers 70 and 79.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3869 9472 3881 9467 3894 9468 3902 9411
      3871 9412 3867 9413
TIME...MOT...LOC 0220Z 264DEG 48KT 3889 9458 3881 9459 3874 9459 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Kurtz

808 
WWUS53 KEAX 030225
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
925 PM CDT WED MAY 2 2018

KSC091-121-030235-
/O.CAN.KEAX.TO.W.0006.000000T0000Z-180503T0245Z/
Miami KS-Johnson KS-
925 PM CDT WED MAY 2 2018

...THE TORNADO WARNING FOR NORTHEASTERN MIAMI AND SOUTHEASTERN
JOHNSON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 100 AM CDT for west central
Missouri.

LAT...LON 3869 9460 3881 9458 3895 9459 3902 9411
      3871 9412 3867 9413
TIME...MOT...LOC 0225Z 265DEG 46KT 3891 9451 3882 9451 3876 9451 

$$

MOC037-095-030245-
/O.CON.KEAX.TO.W.0006.000000T0000Z-180503T0245Z/
Cass MO-Jackson MO-
925 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR NORTHERN
CASS AND SOUTHERN JACKSON COUNTIES...
    
At 925 PM CDT, tornado producing storms were located along a line
extending from near Grandview to Belton to near Peculiar, moving east
at 55 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Lee's Summit, Blue Springs, Raytown, Grandview, Belton, Raymore,
Grain Valley, Harrisonville, Pleasant Hill, Oak Grove, Greenwood,
Peculiar, Lake Lotawana, Lake Winnebago, Lone Jack, Cleveland,
Baldwin Park, Strasburg, Unity Village and Tarsney Lakes.

This includes the following highways...
 Interstate 70 in Missouri near mile marker 29.
 Interstate 470 between mile markers 0 and 12.
 Interstate 435 between mile markers 70 and 74.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3869 9460 3881 9458 3895 9459 3902 9411
      3871 9412 3867 9413
TIME...MOT...LOC 0225Z 265DEG 46KT 3891 9451 3882 9451 3876 9451 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Kurtz

The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 7:03 PM CDT	Tornado Warning	EAX	Atchison, Holt	16 min
May 2, 7:27 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, Buchanan, Holt, Nodaway, Platte	48 min
May 2, 7:30 PM CDT	Tornado Warning	EAX	Atchison, Nodaway	15 min
May 2, 8:04 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 2 more	41 min
May 2, 9:06 PM CDT	Tornado Warning	EAX	Bates, Cass	24 min
May 2, 9:22 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Jackson, Johnson, Lafayette	38 min
May 2, 9:28 PM CDT	Tornado Warning	EAX	Jackson, Lafayette	32 min
May 2, 9:44 PM CDT	Tornado Warning	EAX	Carroll, Cass, Jackson, Johnson, Lafayette, Ray	46 min
May 2, 9:49 PM CDT	Tornado Warning	EAX	Bates, Cass, Henry, Johnson	41 min
May 2, 9:57 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Carroll, Cass, Henry, Johnson, Lafayette and 1 more	63 min
May 2, 10:22 PM CDT	Tornado Warning	EAX	Johnson, Lafayette, Pettis, Saline	23 min
May 2, 10:39 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Henry, Johnson, Pettis, Saline	66 min
May 2, 10:47 PM CDT	Severe Thunderstorm Warning	EAX	Macon, Randolph	28 min
May 2, 11:07 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Putnam, Schuyler, Sullivan	28 min
May 3, 4:09 PM CDT	Special Weather Statement	EAX	Atchison	21 min
May 2, 8:26 PM CDT	Special Weather Statement	EAX	Johnson, Linn, Miami	34 min
May 2, 8:35 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Linn, Miami	55 min
May 2, 8:46 PM CDT	Tornado Warning	EAX	Johnson, Miami	29 min
May 3, 6:38 PM CDT	Special Weather Statement	EAX	Doniphan	52 min

Nearby

Tornado Warnings in Missouri, 2018 Tornado Warnings in Kansas, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.