Alert archive / Missouri / Tornado Warnings in 2005

Tornado Warning 7, NWS Kansas City, MO

April 21, 20054 counties in Missouri

NWS Kansas City, MO issued this tornado warning at Apr 21, 2005, 5:37 PM CDT for 4 counties in Missouri. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 21, 2005, 5:37 PM CDT (22:37 UTC)
Expired
Apr 21, 2005, 6:15 PM CDT
In force
38 min
Issued by
NWS Kansas City, MO
Area
Counties, with a storm outline in the text

Counties Clay County, MO, Jackson County, MO, Platte County, MO, Ray County, MO

The radar

The Pleasant Hill radar (KEAX), 58 km from the middle of the area, began a volume at 22:39 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 21, 3:35 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.6 hours before the alert went out and 109 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-pSkew-T log-p diagram, Topeka, KS at 12:00Z on 2005-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 626 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 12:00Z on 2005-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
626 J/kg
Mixed-layer CIN
-159 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KEAX 212237
TOREAX
MOC047-095-165-177-212315-
/O.NEW.KEAX.TO.W.0007.050421T2237Z-050421T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
537 PM CDT THU APR 21 2005

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI
  CLAY COUNTY IN WEST CENTRAL MISSOURI
  SOUTHWESTERN RAY COUNTY IN WEST CENTRAL MISSOURI
  SOUTHEASTERN PLATTE COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 615 PM CDT

* AT 534 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR PLATTE CITY...OR 22 MILES NORTHWEST OF
  KANSAS CITY...AND MOVING EAST AT 45 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
   SMITHVILLE BY 545 PM CDT.
   KEARNEY BY 600 PM CDT.
   MOSBY BY 605 PM CDT.
   EXCELSIOR SPRINGS BY 610 PM CDT.
   WOODS HEIGHTS BY 615 PM CDT.

THE TOWNS OF FERRELVIEW...PRATHERSVILLE...HOMESTEAD AND CRYSTAL LAKES
ARE ALSO IN THE PATH OF THIS TORNADIC STORM.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3946 9464 3921 9481 3906 9413 3939 9399

$$

SEAMAN
2 follow-up statements
000 
WWUS53 KEAX 212250
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
549 PM CDT THU APR 21 2005

MOC047-095-165-177-212315-
/O.CON.KEAX.TO.W.0007.000000T0000Z-050421T2315Z/
PLATTE MO-RAY MO-CLAY MO-JACKSON MO-
549 PM CDT THU APR 21 2005

...A TORNADO WARNING CONTINUES FOR NORTHEASTERN JACKSON...CLAY...
SOUTHWESTERN RAY AND SOUTHEASTERN PLATTE COUNTIES UNTIL 615 PM CDT...

AT 545 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO..  THIS DANGEROUS
STORM WAS LOCATED NEAR KCI AIRPORT...OR 15 MILES NORTHWEST OF KANSAS
CITY...AND MOVING EAST AT 35 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
   GLADSTONE BY 555 PM CDT.
   LIBERTY BY 605 PM CDT.
   KEARNEY BY 610 PM CDT.
   MISSOURI CITY BY 615 PM CDT.

THE TOWNS OF FERRELVIEW...PLATTE WOODS...LAKE WAUKOMIS...PLEASANT
VALLEY...GLENAIRE AND PRATHERSVILLE ARE ALSO IN THE PATH OF THIS
TORNADO.

IN ADDITION TO THE TORNADIC THREAT...VERY STRONG STRAIGHT LINE WINDS 
IN EXCESS OF 80 MPH AND GOLF BALL SIZE HAIL ARE ALSO POSSIBLE WITH 
THIS STORM.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3946 9464 3921 9481 3906 9413 3939 9399

$$

SEAMAN
000 
WWUS53 KEAX 212309
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
607 PM CDT THU APR 21 2005

MOC047-095-165-177-212315-
/O.CON.KEAX.TO.W.0007.000000T0000Z-050421T2315Z/
PLATTE MO-RAY MO-CLAY MO-JACKSON MO-
607 PM CDT THU APR 21 2005

...A TORNADO WARNING CONTINUES FOR NORTHEASTERN JACKSON...CLAY...
SOUTHWESTERN RAY AND SOUTHEASTERN PLATTE COUNTIES UNTIL 615 PM CDT...

AT 605 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO..  THIS DANGEROUS STORM 
WAS LOCATED NEAR GLADSTONE...OR 9 MILES NORTH OF KANSAS CITY...AND 
MOVING SOUTHEAST AT 25 MPH. 

THIS DANGEROUS STORM WILL BE NEAR...
   LIBERTY BY 615 PM CDT.

THE TOWNS OF OAKVIEW...OAKWOOD PARK...OAKWOOD...OAKS...PLEASANT
VALLEY...CLAYCOMO...RANDOLPH...GLENAIRE...BIRMINGHAM AND SUGAR CREEK
ARE ALSO IN THE PATH OF THIS TORNADO.

ADDITIONAL SEVERE THUNDERSTORMS EXTEND 
FROM EASTERN PLATTE ACROSS CLAY COUNTY...AND ARE CAPABLE OF 
PRODUCING QUARTER TO HALF DOLLAR SIZE HAIL...AS WELL AS WIND GUSTS 
TO 70 MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3946 9464 3921 9481 3906 9413 3939 9399

$$

SEAMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 12:37 AM CDTFlash Flood WarningEAXAtchison, Holt, Nodaway6 hr
Apr 21, 8:52 AM CDTSevere Thunderstorm WarningEAXDaviess, DeKalb, Gentry, Harrison38 min
Apr 21, 2:45 PM CDTSevere Thunderstorm WarningEAXCooper, Howard45 min
Apr 21, 3:27 PM CDTSevere Thunderstorm WarningEAXCooper33 min
Apr 21, 3:49 PM CDTTornado WarningEAXCooper26 min
Apr 21, 4:25 PM CDTSevere Thunderstorm WarningEAXBates, Cass, Henry52 min
Apr 21, 4:43 PM CDTTornado WarningEAXBates, Henry47 min
Apr 21, 5:05 PM CDTTornado WarningEAXPlatte40 min
Apr 21, 5:07 PM CDTSevere Thunderstorm WarningEAXBuchanan53 min
Apr 21, 5:24 PM CDTSevere Thunderstorm WarningEAXJohnson, Pettis51 min
Apr 21, 5:43 PM CDTSevere Thunderstorm WarningEAXCaldwell, Clay, Clinton, Ray55 min
Apr 21, 5:46 PM CDTSevere Thunderstorm WarningEAXPlatte44 min
Apr 21, 5:56 PM CDTSevere Thunderstorm WarningEAXCooper, Howard, Saline34 min
Apr 21, 6:04 PM CDTSevere Thunderstorm WarningEAXCaldwell, Carroll, Lafayette, Ray56 min
Apr 21, 6:16 PM CDTSevere Thunderstorm WarningEAXClay, Jackson, Platte, Ray44 min
Apr 21, 6:36 PM CDTTornado WarningEAXRay39 min

Nearby

Tornado Warnings in Missouri, 2005Every tornado warning in 2005Tornadoes in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.