Alert archive / Missouri / Tornado Warnings in 2012

Tornado Warning 3, NWS Kansas City, MO

May 6, 2012Cass County, Missouri

NWS Kansas City, MO issued this tornado warning at May 6, 2012, 5:16 PM CDT for Cass County, Missouri. It was in force for 29 min. 3 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 6, 2012, 5:16 PM CDT (22:16 UTC)
Expired: May 6, 2012, 5:45 PM CDT
In force: 29 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 18 km from the middle of the area, began a volume at 22:15 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 6, 5:17 PM CDT	TORNADO	1 S Raymore, MO	BRIEF TORNADO TOUCHDOWN REPORTED AT 195TH AND OLD SCHOOL ROAD.
May 6, 5:31 PM CDT	HAIL 1	Raymore, MO	QUARTER SIZE HAIL REPORTED IN DOWNTOWN RAYMORE.
May 6, 5:41 PM CDT	HAIL 1	Raymore, 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
May 6, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.3 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: 1880 J/kg
Mixed-layer CIN: -240 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

424 
WFUS53 KEAX 062216
TOREAX
MOC037-062245-
/O.NEW.KEAX.TO.W.0003.120506T2216Z-120506T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
516 PM CDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL CASS COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 545 PM CDT

* AT 511 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR PECULIAR...AND MOVING EAST AT 5 MPH.

  HAZARD...DEVELOPING TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE
           HOMES COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR
           SNAPPED. VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.

* LOCATIONS IMPACTED INCLUDE...
  RAYMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3884 9446 3875 9440 3873 9452 3877 9453
TIME...MOT...LOC 2216Z 250DEG 5KT 3876 9449

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

DEROCHE

2 follow-up statements

417 
WWUS53 KEAX 062226
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
526 PM CDT SUN MAY 6 2012

MOC037-062245-
/O.CON.KEAX.TO.W.0003.000000T0000Z-120506T2245Z/
CASS MO-
526 PM CDT SUN MAY 6 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL CASS COUNTY
UNTIL 545 PM CDT...

AT 524 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR 195THA ND OLD 
SCHOOL ROAD NEAR RAYMORE...AND MOVING EAST AT 5 MPH.

HAZARD...DAMAGING TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO.

IMPACT...SIGNIFICANT HOUSE AND BUILDING DAMAGE POSSIBLE. MOBILE HOMES
         COMPLETELY DESTROYED IF HIT. SOME TREES UPROOTED OR SNAPPED.
         VEHICLES WILL LIKELY BE THROWN BY TORNADIC WINDS.

IN ADDITION AT 515 PM...A NATIONAL WEATHER SERVICE EMPLOYEE REPORTED 
A TORNADO NEAR RAYMORE.

LOCATIONS IMPACTED INCLUDE...
RAYMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

&&

LAT...LON 3882 9445 3875 9440 3874 9450 3877 9451
TIME...MOT...LOC 2226Z 250DEG 5KT 3876 9447

TORNADO...OBSERVED
HAIL...1.75IN

$$

DEROCHE

138 
WWUS53 KEAX 062240
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
540 PM CDT SUN MAY 6 2012

MOC037-062250-
/O.EXP.KEAX.TO.W.0003.000000T0000Z-120506T2245Z/
CASS MO-
540 PM CDT SUN MAY 6 2012

...THE TORNADO WARNING FOR NORTH CENTRAL CASS COUNTY WILL EXPIRE AT
545 PM CDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR THE AREA.  

LAT...LON 3882 9445 3875 9440 3874 9450 3877 9451
TIME...MOT...LOC 2240Z 250DEG 5KT 3877 9445

$$

DEROCHE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:34 AM CDT	Special Weather Statement	EAX	Harrison	26 min
May 6, 9:35 AM CDT	Special Weather Statement	EAX	Ray	40 min
May 6, 9:38 AM CDT	Special Weather Statement	EAX	Clay	37 min
May 6, 10:41 AM CDT	Special Weather Statement	EAX	Jackson	34 min
May 6, 11:02 AM CDT	Areal Flood Advisory	EAX	Jackson	5 hr
May 6, 12:12 PM CDT	Special Weather Statement	EAX	Jackson	33 min
May 6, 12:14 PM CDT	Special Weather Statement	EAX	Clinton	31 min
May 6, 12:28 PM CDT	Severe Thunderstorm Warning	EAX	Clinton, DeKalb	32 min
May 6, 12:59 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, DeKalb	31 min
May 6, 1:24 PM CDT	Special Weather Statement	EAX	Chariton	51 min
May 6, 1:47 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Randolph	28 min
May 6, 1:57 PM CDT	Severe Thunderstorm Warning	EAX	Howard, Saline	33 min
May 6, 2:15 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	30 min
May 6, 4:31 PM CDT	Severe Thunderstorm Warning	EAX	Cass	29 min
May 6, 4:46 PM CDT	Special Weather Statement	EAX	Caldwell, Clinton	44 min
May 6, 4:47 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	28 min
May 6, 5:01 PM CDT	Severe Thunderstorm Warning	EAX	Cass	29 min
May 6, 5:30 PM CDT	Special Weather Statement	EAX	Daviess	45 min
May 6, 5:34 PM CDT	Special Weather Statement	EAX	Cass	26 min
May 6, 5:39 PM CDT	Severe Thunderstorm Warning	EAX	Cass	36 min
May 6, 5:51 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	24 min
May 6, 6:02 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson	28 min
May 6, 6:15 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson	30 min
May 6, 6:18 PM CDT	Flash Flood Warning	EAX	Cass, Jackson	5 hr
May 6, 6:30 PM CDT	Severe Thunderstorm Warning	EAX	Cass	30 min
May 6, 6:45 PM CDT	Special Weather Statement	EAX	Gentry	45 min
May 6, 6:47 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette	28 min
May 6, 6:58 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	32 min

Nearby

Tornado Warnings in Missouri, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.