Alert archive / Missouri / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 21, NWS Kansas City, MO

April 21, 20054 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 21, 2005, 6:16 PM CDT for 4 counties in Missouri. It was in force for 44 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, 6:16 PM CDT (23:16 UTC)
Expired: Apr 21, 2005, 7:00 PM CDT
In force: 44 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), 56 km from the middle of the area, began a volume at 23:15 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 21, 3:35 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 111 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: 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 
WUUS53 KEAX 212316
SVREAX
MOC047-095-165-177-220000-
/O.NEW.KEAX.SV.W.0021.050421T2317Z-050422T0000Z/

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

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI
  CLAY COUNTY IN WEST CENTRAL MISSOURI
  SOUTHWESTERN RAY COUNTY IN WEST CENTRAL MISSOURI
  EASTERN PLATTE COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 700 PM CDT

* AT 615 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO
  GOLF BALL SIZE.  THIS STORM WAS LOCATED NEAR LIBERTY...OR 13 MILES
  NORTHEAST OF KANSAS CITY...AND MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   MOSBY BY 625 PM CDT.
   EXCELSIOR SPRINGS BY 630 PM CDT.
   WOODS HEIGHTS BY 640 PM CDT.

THE TOWNS OF GLENAIRE...PRATHERSVILLE...HOMESTEAD...CRYSTAL LAKES AND
RAYVILLE ARE ALSO IN THE PATH OF THIS SEVERE THUNDERSTORM.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
PLEASANT HILL.

LAT...LON 3929 9469 3907 9412 3939 9398 3947 9461

$$

SEAMAN

2 follow-up statements

000 
WWUS53 KEAX 212325
SVSEAX

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

MOC047-095-165-177-220000-
/O.CON.KEAX.SV.W.0021.000000T0000Z-050422T0000Z/
PLATTE MO-RAY MO-CLAY MO-JACKSON MO-
625 PM CDT THU APR 21 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR NORTHEASTERN
JACKSON...CLAY...SOUTHWESTERN RAY AND EASTERN PLATTE COUNTIES UNTIL
700 PM CDT...

AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED NEAR MISSOURI CITY...OR 16 MILES
NORTHEAST OF KANSAS CITY...AND MOVING NORTHEAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
   EXCELSIOR SPRINGS BY 630 PM CDT.
   WOODS HEIGHTS BY 635 PM CDT.
   VIBBARD BY 640 PM CDT.

THE TOWNS OF PRATHERSVILLE...HOMESTEAD...CRYSTAL LAKES AND RAYVILLE
ARE ALSO IN THE PATH OF THIS SEVERE THUNDERSTORM.

LAT...LON 3929 9469 3907 9412 3939 9398 3947 9461

$$

SEAMAN

000 
WWUS53 KEAX 212343
SVSEAX

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

MOC165-212352-
/O.CAN.KEAX.SV.W.0021.000000T0000Z-050422T0000Z/
PLATTE MO-
642 PM CDT THU APR 21 2005

...THE SEVERE THUNDERSTORM WARNING FOR PLATTE COUNTY HAS BEEN
CANCELLED...

AT 640 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS
BEEN CANCELLED.


$$

MOC047-095-177-220000-
/O.CON.KEAX.SV.W.0021.000000T0000Z-050422T0000Z/
RAY MO-CLAY MO-JACKSON MO-
642 PM CDT THU APR 21 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR NORTHEASTERN 
JACKSON...EASTERN CLAY AND WEST CENTRAL RAY COUNTIES UNTIL 700 PM 
CDT...

AT 640 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED 5 MILES EAST OF MISSOURI CITY...OR 21
MILES NORTHEAST OF KANSAS CITY...AND MOVING EAST AT 35 MPH.

THIS SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
CLAY...NORTHEASTERN JACKSON AND SOUTHWESTERN RAY COUNTIES...INCLUDING
THE TOWNS OF WOODS HEIGHTS...ORRICK AND RAYVILLE.

LAT...LON 3921 9444 3915 9409 3939 9398 3945 9437

$$

SEAMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 12:37 AM CDT	Flash Flood Warning	EAX	Atchison, Holt, Nodaway	6 hr
Apr 21, 8:52 AM CDT	Severe Thunderstorm Warning	EAX	Daviess, DeKalb, Gentry, Harrison	38 min
Apr 21, 2:45 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	45 min
Apr 21, 3:27 PM CDT	Severe Thunderstorm Warning	EAX	Cooper	33 min
Apr 21, 3:49 PM CDT	Tornado Warning	EAX	Cooper	26 min
Apr 21, 4:25 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry	52 min
Apr 21, 4:43 PM CDT	Tornado Warning	EAX	Bates, Henry	47 min
Apr 21, 5:05 PM CDT	Tornado Warning	EAX	Platte	40 min
Apr 21, 5:07 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan	53 min
Apr 21, 5:24 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	51 min
Apr 21, 5:37 PM CDT	Tornado Warning	EAX	Clay, Jackson, Platte, Ray	38 min
Apr 21, 5:43 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clay, Clinton, Ray	55 min
Apr 21, 5:46 PM CDT	Severe Thunderstorm Warning	EAX	Platte	44 min
Apr 21, 5:56 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard, Saline	34 min
Apr 21, 6:04 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Carroll, Lafayette, Ray	56 min
Apr 21, 6:36 PM CDT	Tornado Warning	EAX	Ray	39 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2005 Every severe thunderstorm warning 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.