Alert archive / Kansas / Flash Flood Warnings in 1993

Flash Flood Warning 153, NWS Kansas City, MO

September 21, 1993Johnson County, Leavenworth County, Kansas

NWS Kansas City, MO issued this flash flood warning at Sep 21, 1993, 5:02 PM CDT for Johnson County, Leavenworth County, Kansas. It was in force for 118 min.

The area

The counties it named.

The facts

Issued
Sep 21, 1993, 5:02 PM CDT (22:02 UTC)
Expired
Sep 21, 1993, 7:00 PM CDT
In force
118 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, 10.0 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood 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, 3 hours 11 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, 6:51 PM CDTSevere Thunderstorm WarningEAXAtchison69 min
Sep 21, 3:46 PM CDTTornado WarningEAXJohnson, Leavenworth59 min
Sep 21, 4:45 PM CDTTornado WarningEAXLeavenworth25 min
Sep 21, 4:45 PM CDTTornado WarningEAXJohnson45 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

Flash Flood Warnings in Kansas, 1993Every flash flood warning 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.