Alert archive / Missouri / Tornado Warnings in 2004

Tornado Warning 74, NWS Kansas City, MO

October 29, 2004Johnson County, Missouri

NWS Kansas City, MO issued this tornado warning at Oct 29, 2004, 6:48 PM CDT for Johnson County, Missouri. It was in force for 42 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: Oct 29, 2004, 6:48 PM CDT (23:48 UTC)
Expired: Oct 29, 2004, 7:30 PM CDT
In force: 42 min
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 42 km from the middle of the area, began a volume at 23:51 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
Oct 29, 5:10 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.8 hours before the alert went out and 163 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: 861 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 854 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 301 m²/s²
0-3 km storm-relative helicity: 286 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KEAX 292348
TOREAX
MOC101-300030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
648 PM CDT FRI OCT 29 2004

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  JOHNSON COUNTY IN WEST CENTRAL MISSOURI.

* UNTIL 730 PM CDT.

* AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR CENTERVIEW...OR 7 MILES SOUTHWEST OF
  WARRENSBURG...AND MOVING NORTHEAST AT 45 MPH.

* THIS TORNADIC STORM WILL BE...
  NEAR WARRENSBURG BY 655 PM CDT.
  4 MILES NORTHWEST OF KNOB NOSTER BY 705 PM CDT.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

LAT...LON 3864 9398 3869 9352 3892 9352 3890 9390

$$

HUDSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 29, 5:18 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Harrison	57 min
Oct 29, 5:59 PM CDT	Severe Thunderstorm Warning	EAX	Mercer	46 min
Oct 29, 6:02 PM CDT	Severe Thunderstorm Warning	EAX	Jackson, Lafayette	43 min
Oct 29, 6:23 PM CDT	Severe Thunderstorm Warning	EAX	Daviess	52 min
Oct 29, 6:28 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	47 min
Oct 29, 6:38 PM CDT	Tornado Warning	EAX	Grundy	52 min
Oct 29, 6:44 PM CDT	Severe Thunderstorm Warning	EAX	Putnam	31 min

Nearby

Tornado Warnings in Missouri, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.