Alert archive / Missouri / Tornado Warnings in 2003

Tornado Warning 8, NWS Kansas City, MO

April 30, 2003Buchanan County, Missouri

NWS Kansas City, MO issued this tornado warning at Apr 30, 2003, 8:08 PM CDT for Buchanan County, Missouri. It was in force for 37 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 30, 2003, 8:08 PM CDT (01:08 UTC)
Expired
Apr 30, 2003, 8:45 PM CDT
In force
37 min
Issued by
NWS Kansas City, MO
Area
Counties, with a storm outline in the text

County Buchanan County, MO

The radar

The Pleasant Hill radar (KEAX), 113 km from the middle of the area, began a volume at 01:12 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 30, 5:15 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.1 hours before the alert went out and 106 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 00:00Z on 2003-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3988 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2003-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.19395878Sfc1 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
3988 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1381 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
1.0
Supercell composite
10.2

Open this sounding in Storm Lab

The text

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

017 
WFUS53 KEAX 010108
TOREAX
MOC021-010145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
808 PM CDT WED APR 30 2003

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BUCHANAN COUNTY IN NORTHWEST MISSOURI

* UNTIL 845 PM CDT

* AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR ST JOSEPH...MOVING NORTHEAST AT 30 MPH.
  LARGE HAIL AND DESTRUCTIVE THUNDERSTORM WINDS ARE ALSO LIKELY WITH
  THIS STORM.

* THIS TORNADIC STORM IS EXPECTED TO BE NEAR...
   EASTON BY 815 PM CDT.

THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY ISSUED FOR THE WARNED AREA.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 3967 9500 3964 9465 3981 9462 3981 9488
          3973 9488

$$

HUDSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 7:05 PM CDTSevere Thunderstorm WarningEAXBuchanan40 min
Apr 30, 7:14 PM CDTTornado WarningEAXPlatte31 min
Apr 30, 7:31 PM CDTSevere Thunderstorm WarningEAXClinton59 min
Apr 30, 7:31 PM CDTTornado WarningEAXHarrison44 min
Apr 30, 7:36 PM CDTSevere Thunderstorm WarningEAXGentry39 min
Apr 30, 7:36 PM CDTTornado WarningEAXClinton39 min
Apr 30, 7:48 PM CDTTornado WarningEAXMercer57 min
Apr 30, 7:54 PM CDTSevere Thunderstorm WarningEAXAndrew, Buchanan66 min
Apr 30, 8:11 PM CDTTornado WarningEAXClinton19 min
Apr 30, 8:17 PM CDTSevere Thunderstorm WarningEAXHarrison58 min
Apr 30, 8:19 PM CDTSevere Thunderstorm WarningEAXCaldwell56 min
Apr 30, 8:21 PM CDTSevere Thunderstorm WarningEAXDeKalb69 min
Apr 30, 8:30 PM CDTTornado WarningEAXPutnam60 min
Apr 30, 8:38 PM CDTSevere Thunderstorm WarningEAXCaldwell37 min
Apr 30, 8:49 PM CDTSevere Thunderstorm WarningEAXMercer56 min
Apr 30, 9:10 PM CDTSevere Thunderstorm WarningEAXClinton50 min
Apr 30, 9:23 PM CDTTornado WarningEAXSchuyler52 min
Apr 30, 9:27 PM CDTSevere Thunderstorm WarningEAXJackson63 min
Apr 30, 9:29 PM CDTSevere Thunderstorm WarningEAXDaviess, DeKalb61 min
Apr 30, 9:41 PM CDTSevere Thunderstorm WarningEAXCaldwell64 min
Apr 30, 10:12 PM CDTSevere Thunderstorm WarningEAXLivingston63 min
Apr 30, 10:41 PM CDTSevere Thunderstorm WarningEAXBates64 min
Apr 30, 10:53 PM CDTSevere Thunderstorm WarningEAXRay52 min

Nearby

Tornado Warnings in Missouri, 2003Every tornado warning in 2003Tornadoes in 2003

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.