Alert archive / Missouri / Flash Flood Warnings in 1996

Flash Flood Warning 46, NWS Kansas City, MO

August 19, 1996Atchison County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 19, 1996, 5:17 PM CDT for Atchison County, Missouri. It was in force for 4 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 19, 1996, 5:17 PM CDT (22:17 UTC)
Expired
Aug 19, 1996, 9:00 PM CDT
In force
4 hr
Issued by
NWS Kansas City, MO
Area
Whole counties

County Atchison County, MO

The radar

The Omaha radar (KOAX), 127 km from the middle of the area, began a volume at 22:16 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

Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 127 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, Omaha, NE at 12:00Z on 1996-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1345 joules per kilogram.LCLLFCEL10008507005003002001001 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, Omaha, NE at 12:00Z on 1996-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 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
1345 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
826 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
60 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 192219
FFWMCI
MOC005-200200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
517 PM CDT MON AUG 19 1996

* FLASH FLOOD WARNING FOR
  ATCHISON COUNTY - NORTHWEST MISSOURI

* UNTIL 900 PM CDT
 
* SOME STREAMS AND RIVERS AFFECTED
    TARKIO RIVER
    ROCK CREEK
    LITTLE TARKIO CREEK

* CAUSE AND EFFECT
    AT 510 PM CDT...DOPPLER RADAR RAINFALL ESTIMATED INDICATED THAT
    FROM 3 TO 4 INCHES OF RAIN HAD FALLEN SINCE 4 PM CDT IN AN
    AREA FROM ROCK PORT TO TARKIO TO WESTBORO.

* FORECAST CONDITIONS
    HEAVY RAINS WILL CONTINUE ACROSS THE COUNTY WHICH WILL FURTHER
    INCREASE THE THREAT FOR FLASH FLOODING.

DON'T DRIVE ACROSS FLOODbED ROADS!  MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.

HUDSON

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 19, 3:40 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Aug 19, 3:40 PM CDT, 1 hour 37 minutes before
NORTHWEST MISSOURI FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
335 PM CDT MON AUG 19 1996

AWIPS 1KM VSBL IMAGERY SHOWS CNVTN DVLPG ALG SFC FNT OVR NRN KS/SRN NEB
INTO SRN IA.  MAX LO LVL MOISTURE CONVERGENCE OVR SE NEB SHOULD PROVIDE
LIFT NEEDED FOR STG TSTM DVLPMNT NEXT FEW HRS.  EXPCT TSTM ACTIVITY TO
MOVE EAST ALONG BNDRY AND SAG SWRD INTO NRN MO THIS EVENING.  MDLS
SUGGEST CONTINUED CONVERGENCE OVER NORTH CNTRL KANSAS TOWARD MIDNIGHT
AND EXPECT TO SEE ADDITIONAL REDEVELOPMENT UPSTREAM.  POTENTIAL FOR
TSTSMS MAY LINGER INTO THE MORNING HOURS OVER WESTERN PORTIONS OF THE
STATE ON TUESDAY.

LONGER TERM...MODELS SUGGEST SUMMER.  STG SHORT WAVE TROUGH MOVES INTVO
THE NORTHERN ROCKIES 36 TO 48 HRS WHICH RESULTS IN RIDGING ACROSS THE
CENTRAL PLAINS.  WARMER TEMPERATURES INTO THE LOWER 90S AND LOWER POPS
AS SFC FRONT LIFTS WELL TO THE NORTH OF THE AREA.

MCI BU 70/90 71/93 70 99531

BROWNING

In the hours before

Special weather statement, Aug 19, 1:02 PM CDT, 4 hours 15 minutes before
KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-201200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
100 PM CDT MON AUG 19 1996

...SLIGHT RISK OF SEVERE THUNDERSTORMS NORTH OF A LINE FROM ST JOSEPH
TO PRINCETON THIS EVENING AND EARLY TONIGHT...

FORECAST...THUNDERSTORMS ARE FORECAST TO DEVELOP ALONG A FRONT IN
SOUTHERN NEBRASKA AND SOUTHERN IOWA AND MOVE INTO NORTHERN MISSOURI
LATE THIS AFTERNOON AND EVENING...WITH ISOLATED SEVERE THUNDERSTOMS
POSSIBLE.  THE MAIN SEVERE THREAT WILL BE FROM LARGE HAIL AND DAMAGING
WINDS.

ISOLATED THUNDERSTOMS MAY DEVELOP ACROSS WEST CENTRAL MISSOURI LATE
THIS AFTERNOON IN THE VERY MOIST AND UNSTABLE AIR.  WEAK WINDS ALOFT
PRECLUDE THESE STORMS FROM BECOMING SEVERE.

ACTIVATION OF CIVIL DEFENSE...HAM RADIO AND STORM SPOTTER NETWORKS MAY
BE REQUIRED OVER EXTREME NORTHWEST MISSOURI LATE THIS AFTERNOON AND
EVENING.

DISCUSSION...AN OUTFLOW BOUNDARY FROM OVERNIGHT CONVECTION HAS PUSHED
SOUTH INTO EXTREME NORTHERN MISSOURI WHILE A COLD FRONT IS MOVING INTO
SOUTHEAST NEBRASKA.  CONVERGENCE OF LOW LEVEL...MOIST AND UNSTABLE AIR
ALONG THESE BOUNDARIES WILL AID THUNDERSTORM DEVELOPMENT THIS
AFTERNOON.  THESE STORMS WILL MOVE EAST AND SAG SOUTH THIS EVENING.
DUE TO THE INSTABILITY AND STRONGER WINDS ALOFT...THERE IS A POTENTIAL
FOR ISOLATED SEVERE THUNDERSTORMS IN NORTHWEST MISSOURI.

BROWNING

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 4:03 PM CDTSevere Thunderstorm WarningEAXAtchison47 min
Aug 19, 5:00 PM CDTSevere Thunderstorm WarningEAXAtchison60 min

Nearby

Flash Flood Warnings in Missouri, 1996Every 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.