Alert archive / Kansas / Flash Flood Warnings in 1996

Flash Flood Warning 48, NWS Kansas City, MO

August 22, 1996Leavenworth County, Kansas

NWS Kansas City, MO issued this flash flood warning at Aug 22, 1996, 9:28 PM CDT for Leavenworth County, Kansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 22, 1996, 9:28 PM CDT (02:28 UTC)
Expired: Aug 23, 1996, 12:00 AM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Whole counties

County Leavenworth County, KS

The radar

The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 02:29 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.5 hours before the alert went out and 56 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: 876 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 42 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 230228
FFWMCI
KSC103-230500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
928 PM CDT THU AUG 22 1996

* FLASH FLOOD WARNING FOR
  LEAVENWORTH COUNTY - EAST CENTRAL KANSAS

* UNTIL MIDNIGHT CDT
 
* SOME STREAMS AND RIVERS AFFECTED
    STRANGER CREEK
    NINE-MILE CREEK
    TONGANOXIE CREEK

* CAUSE AND EFFECT
    THUNDERSTORMS HAVE REMAINED NEARLY STATIONARY OVER THE SOUTHERN
    HALF OF LEAVENWORTH COUNTY SINCE 845 PM...DROPPING TORRENTIAL
    RAINFALLS OF 1 TO 2 INCHES OF RAIN.  THIS WILL LIKELY CAUSE
    RAPID RISES ON CREEKS AND STREAMS IN THE AREA FROM AROUND
    TONGANOXIE DOWN TO THE KANSAS RIVER.  LOW-LYING AREAS AND SOME
    STREETS MAY BE FLOODED AS WELL.

* FORECAST CONDITIONS
    RAIN IS EXPECTED TO CONTINUE THROUGH AT LEAST 11 PM...AND THIS
    MAY CAUSE FLOODING PROBLEMS.  WATCH FOR HIGH WATER ON I-70...
    K-32...ROUTE 40...ROUTE 24 AND K-16.  IF HIGH WATER IS
    ENCOUNTERED STOP AND GO AROUND.

DO NOT ATTEMPT TO CROSS HIGH WATER EITHER ON FOOT OR BY VEHICLE.
THE WATER DEPTH MAY BE MUCH GREATER THAN YOU THINK.  TAKE THE EXTRA
TIME AND GO AROUND.  BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS
HARDER TO RECOGNIZE THE DANGER OF FLOODING.

WELVAERT

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.

NWS Kansas City, MO wrote its last area forecast discussion before this flash flood warning went out at Aug 22, 3:04 PM CDT, 6 hours 24 minutes earlier.

Area forecast discussion, Aug 22, 3:04 PM CDT, 6 hours 24 minutes before

NORTHWEST MISSOURI FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
245 PM CDT THU AUG 22 1996

WEAK FRONT FROM ACROSS NORTHWEST MISSOURI INTO CENTRAL KANSAS WILL
CONTINUE TO SAG SOUTHWARD TONIGHT.  WILL REDUCE POPS AS DISTINCT LACK
OF FORCING EVIDENT IN MODELS. LATEST SFC MAP INDICATES BEST AREA (BUT
STILL WEAK) OF CONVERGENCE IS SETTING UP ALONG FRONT IN KANSAS WITH SFC
LOW.  AS LOW MOVES ALONG THE FRONT AS ETA MODEL INDICATES ACROSS
NORTHERN MISSOURI TONIGHT...CHANCES FOR SHOWERS/THUNDERSTORMS INCREASE.
MODELS CONTINUE TO PUSH FRONT THROUGH REGION TONIGHT...WILL LEAVE
LINGERING POPS IN FOR MORNING HOURS IN WEST CENTRAL TO NORTHEAST
PORTIONS DUE TO SLOW MOVEMENT OF FRONT TODAY.

SLIGHTLY COOLER AND DRIER AIR PROGGED TO MOVE INTO NORTHERN MISSOURI
FRIDAY NIGHT AND SATURDAY.

MCI BU 67/82 64/84 64 1353-

BROWNING

Nearby

Flash Flood Warnings in Kansas, 1996 Every flash flood warning in 1996

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.