Alert archive / Missouri / Flash Flood Warnings in 1996

Flash Flood Warning 39, NWS Kansas City, MO

July 20, 1996Clay County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jul 20, 1996, 10:36 PM CDT for Clay 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: Jul 20, 1996, 10:36 PM CDT (03:36 UTC)
Expired: Jul 21, 1996, 2:30 AM CDT
In force: 4 hr
Issued by: NWS Kansas City, MO
Area: Whole counties

County Clay County, MO

The radar

The Pleasant Hill radar (KEAX), 57 km from the middle of the area, began a volume at 03:38 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, 3.6 hours before the alert went out and 111 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: 3392 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1402 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 118 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 210337
FFWMCI
MOC047-210735-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
1036 PM CDT SAT JUL 20 1996

* FLASH FLOOD WARNING FOR
  CLAY COUNTY - NORTHWEST MISSOURI

* UNTIL 230 AM CDT
 
* SOME STREAMS AND RIVERS AFFECTED
    HOLT CREEK
    CLEAR CREEK

* CAUSE AND EFFECT
    THUNDERSTORMS HAVE DROPPED 2 TO 3 INCHES OF RAIN ACROSS NORTHERN
    SECTIONS OF THE COUNTY WITH 1 TO 2 INCHES ELSEWHERE. ADDITIONAL
    THUNDERSTORMS NOW AFFECTING THE COUNTY WILL RESULT IN AN INCH OR
    MORE OF ADDITIONAL RAINFALL.

* FORECAST CONDITIONS
    RAPID RISES ON STREAMS AND CREEKS IS LIKELY...POSSIBLY RESULTING
    IN FLASH FLOODING.

BE ESPECIA8LLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGER OF FLOODING.

BUNTING

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 Jul 20, 3:37 PM CDT, 6 hours 59 minutes earlier.

Area forecast discussion, Jul 20, 3:37 PM CDT, 6 hours 59 minutes before

NORTHWEST MISSOURI FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
338 PM CDT SAT JUL 20 1996

SHORT TERM PROBLEM WL BE TRW RDVLPMT LT THIS AFTN INTO TNGT AS FNTL
BNDRY RMNS NRLY E CNTRL KS INTO CNTRL MO WITH MID/UPR LEVEL VORT MOVG
INTO WRN ARND 06Z...THEN THRU RMNDR OF CWA SUN MRNG.  MEANWHILE...LGT
TO MDT RW/TRW CONTG VCNTY OF ELEVATD BNDRY IN FAR NRN MO.

LATEST ADAP SHOWG MSTR CNVGNC MAX IN NE KS WITH AXIS EXTG FM NRN MO
SWWD INTO S CNTRL KS.  XPC RPD DVLPMT IN ERN KS\WRN MO BY ERY EVE...
WITH ACTVTY MOVG EWD AND ENDG BHND VORT.  FFG GEN IN THE 2.5-3.5 RNG
WITH HIER AMNTS IN SW PART OF CWA.  RNFALL AMNTS SINCE 12Z IN FAR N
FM ARND .5 MOST AREAS TO 1.5 IN ATCHISON COUNTY MO.  PER DISSCUSION
WITH STL...WL INCLUDE ENTR CWA IN FFA TNGT...THO KS PORTIONS OF KC
METRO AREA INTO SW CWA BORDERLINE.

BNDRY LIFTS NE OUT OF AREA SUN INTO SUN EVE WITH ANOTHER CDFNT APPCHG
NW MO BY MON MRNG...MOVG THRU AREA ON MON.  WL ADD SCT POPS FAR NW LT
SUN NGT AND OVR ENTR CWA MON.

MCI BB 071/087 070/087 067 7-13

DJV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 10:58 PM CDT	Flash Flood Warning	EAX	Lafayette	4 hr
Jul 20, 11:04 PM CDT	Flash Flood Warning	EAX	Ray	4 hr
Jul 20, 11:16 PM CDT	Flash Flood Warning	EAX	Johnson	4 hr
Jul 20, 11:23 PM CDT	Flash Flood Warning	EAX	Pettis	4 hr
Jul 21, 2:50 AM CDT	Flash Flood Warning	EAX	Johnson, Pettis	3 hr
Jul 21, 2:50 AM CDT	Flash Flood Warning	EAX	Johnson, Pettis	3 hr

Nearby

Flash Flood Warnings in Missouri, 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.