Alert archive / Kansas / Tornado Warnings in 1993

Tornado Warning 15, NWS Kansas City, MO

September 21, 1993Johnson County, Leavenworth County, Kansas

NWS Kansas City, MO issued this tornado warning at Sep 21, 1993, 3:46 PM CDT for Johnson County, Leavenworth County, Kansas. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Sep 21, 1993, 3:46 PM CDT (20:46 UTC)
Expired
Sep 21, 1993, 4:45 PM CDT
In force
59 min
Issued by
NWS Kansas City, MO
Area
Whole counties

Counties Johnson County, KS, Leavenworth County, KS

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.8 hours before the alert went out and 62 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 1993-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1993-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1292 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
145 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.

000 
TTAA00 KMCI 212046
TORMCI
KSC091-103-212145-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY MISSOURI
346 PM CDT TUE SEP 21 1993
 
THE NATIONAL WEATHER SERVICE IN KANSAS CITY MISSOURI HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL KANSAS
 
   ...JOHNSON COUNTY...SOUTHERN LEAVENWORTH COUNTY
 
AT 345 PM CDT...RADAR INDICATED THAT A SEVERE THUNDERSTORM WITH A
TORNADO WAS JUST EAST OF LAWRENCE...30 MILES SOUTHWEST OF KANSAS CITY.
THE STORM WAS MOVING SOUTHEAST AT 25 MPH...TOWARDS RENO...LINWOOD AND
DESOTO.
 
THIS STORM HAS PRODUCED NUMEROUS TORNADOES...70 MPH WIND AND GOLFBALL
HAIL. RESIDENTS THROUGHOUT SOUTHERN LEAVENWORTH AND ALL OF JOHNSON
COUNTY SHOULD MOVE INDOORS IMMEDIATELY.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
 
 
&

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Sep 21, 1:51 PM CDT, 1 hour 55 minutes before
MOZ004-005-008-009-KS016-211930-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE KANSAS CITY MISSOURI
145 PM CDT SUN SEP 19 1993

...TORNADO WATCH IN EFFECT FOR PORTIONS OF EASTERN AND NORTHEASTERN
KANSAS AND WESTCENTRAL AND NORTHWEST MISSOURI...INCLUDING THE KANSAS
CITY AND ST JOSEPH AREAS...UNTIL 700 PM THIS EVENING...

AT 240 PM...A BAND OF THUNDERSTORMS...SOME VERY STRONG... WERE IN
NORTHEAST KANSAS AND SOUTHEAST NEBRASKA.

THE THUNDERSTORMS WERE IN AN AREA...25 MILES WIDE...AND EXTENDED FROM
25 MILES NORTHWEST OF TOPEKA TO EAST OF LINCOLN NEBRASKA.  THE STRONGEST
STORMS WERE TO THE NORTHWEST OF TOPEKA.

THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR.

PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 4:45 PM CDTTornado WarningEAXLeavenworth25 min
Sep 21, 4:45 PM CDTTornado WarningEAXJohnson45 min
Sep 21, 5:02 PM CDTFlash Flood WarningEAXJohnson, Leavenworth118 min
Sep 21, 5:31 PM CDTSevere Thunderstorm WarningEAXJohnson44 min
Sep 21, 5:43 PM CDTFlash Flood WarningEAXMiami2 hr
Sep 21, 6:14 PM CDTSevere Thunderstorm WarningEAXMiami46 min

Nearby

Tornado Warnings in Kansas, 1993Every tornado warning in 1993Tornadoes in 1993

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.