Alert archive / Missouri / Tornado Warnings in 2011

Tornado Warning 46, NWS Kansas City, MO

June 9, 2011Grundy County, Livingston County, Missouri

NWS Kansas City, MO issued this tornado warning at Jun 9, 2011, 6:17 PM CDT for Grundy County, Livingston County, Missouri. It was in force for 28 min. 1 report 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: Jun 9, 2011, 6:17 PM CDT (23:17 UTC)
Expired: Jun 9, 2011, 6:45 PM CDT
In force: 28 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Grundy County, MO, Livingston County, MO

The radar

The Pleasant Hill radar (KEAX), 146 km from the middle of the area, began a volume at 23:17 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
Jun 9, 6:52 PM CDT	TSTM WND DMG	7 S Trenton, MO	PART OF TREE BLOWN DOWN

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
Jun 9, 3:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.3 hours before the alert went out and 215 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: 2086 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 1051 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 70 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.

339 
WFUS53 KEAX 092317
TOREAX
MOC079-117-092345-
/O.NEW.KEAX.TO.W.0046.110609T2317Z-110609T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
617 PM CDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN GRUNDY COUNTY IN NORTH CENTRAL MISSOURI...
  NORTH CENTRAL LIVINGSTON COUNTY IN NORTH CENTRAL MISSOURI...

* UNTIL 645 PM CDT

* AT 613 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 
  ABOUT 8 MILES SOUTH OF TRENTON. A TORNADO MAY DEVELOP AT ANY TIME. 
  DOPPLER RADAR SHOWED THIS DANGEROUS STORM MOVING EAST AT 30 MPH.  
  IN ADDITION TO A TORNADO...LARGE DESTRUCTIVE HAIL UP TO BASEBALL 
  SIZE IS EXPECTED THROUGH CENTRAL GRUNDY COUNTY.

* LOCATIONS IMPACTED INCLUDE...
  RURAL PORTIONS OF SOUTHERN GRUNDY AND NORTHERN LINVINGSTON COUNTY.

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 4001 9336 3990 9337 3991 9369 4000 9370
      4002 9336
TIME...MOT...LOC 2316Z 269DEG 25KT 3996 9360
HAIL 2.75IN

$$

BOOKBINDER

2 follow-up statements

158 
WWUS53 KEAX 092331
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
631 PM CDT THU JUN 9 2011

MOC079-117-092345-
/O.CON.KEAX.TO.W.0046.000000T0000Z-110609T2345Z/
GRUNDY MO-LIVINGSTON MO-
631 PM CDT THU JUN 9 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL LIVINGSTON
AND SOUTHEASTERN GRUNDY COUNTIES UNTIL 645 PM CDT...

AT 626 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A POSSIBLE TORNADO 
ALONG THE LIVINGSTON AND GRUNDY COUNTY LINE...ABOUT 4 MILES 
NORTHWEST OF CHULA. DOPPLER RADAR CONTINUES TO INDICATE STRONG 
ROTATION IN THIS AREA. THIS POSSIBLE TORNADO WOULD BE MOVING EAST AT 
25 MPH. 

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHERN LIVINGSTON AND 
  SOUTHEASTERN GRUNDY COUNTIES JUST NORTH OF CHULA.

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 4001 9336 3994 9337 3993 9356 4000 9359
      4002 9336
TIME...MOT...LOC 2330Z 258DEG 23KT 3999 9350
HAIL 2.75IN

$$

BOOKBINDER

219 
WWUS53 KEAX 092339
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
639 PM CDT THU JUN 9 2011

MOC079-117-092348-
/O.EXP.KEAX.TO.W.0046.000000T0000Z-110609T2345Z/
GRUNDY MO-LIVINGSTON MO-
639 PM CDT THU JUN 9 2011

...THE TORNADO WARNING FOR NORTH CENTRAL LIVINGSTON AND SOUTHEASTERN 
GRUNDY COUNTIES WILL EXPIRE AT 645 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER 
APPEARS CAPABLE OF PRODUCING A TORNADO. A TORNADO WATCH REMAINS IN 
EFFECT UNTIL 10 PM CDT...AND ADDITIONAL SEVERE THUNDERSTORM 
DEVELOPMENT REMAINS POSSIBLE.

LAT...LON 4001 9336 3994 9337 3993 9356 4000 9359
      4002 9336
TIME...MOT...LOC 2338Z 258DEG 23KT 4000 9343

$$

BOOKBINDER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 10:00 AM CDT	Special Weather Statement	EAX	Putnam	60 min
Jun 9, 2:28 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Linn, Macon, Sullivan	32 min
Jun 9, 2:59 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	46 min
Jun 9, 3:45 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	15 min
Jun 9, 4:03 PM CDT	Severe Thunderstorm Warning	EAX	Macon	18 min
Jun 9, 5:41 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	49 min
Jun 9, 6:00 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Macon, Randolph	45 min
Jun 9, 6:15 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, DeKalb, Gentry, Harrison	30 min
Jun 9, 6:28 PM CDT	Severe Thunderstorm Warning	EAX	Grundy	47 min
Jun 9, 6:34 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Gentry, Holt, Nodaway	26 min
Jun 9, 6:37 PM CDT	Severe Thunderstorm Warning	EAX	Daviess	23 min
Jun 9, 6:38 PM CDT	Areal Flood Advisory	EAX	Daviess, Grundy	6 hr
Jun 9, 6:45 PM CDT	Flash Flood Warning	EAX	Daviess, Grundy	6 hr
Jun 9, 6:51 PM CDT	Special Weather Statement	EAX	Daviess	24 min
Jun 9, 6:56 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Gentry, Nodaway	34 min
Jun 9, 6:59 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Harrison	31 min

Nearby

Tornado Warnings in Missouri, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.