Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS Kansas City, MO

May 8, 2002Johnson County, Missouri

NWS Kansas City, MO issued this flash flood warning at May 8, 2002, 7:40 PM CDT for Johnson 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 outline as issued.

The facts

Issued: May 8, 2002, 7:40 PM CDT (00:40 UTC)
Expired: May 8, 2002, 11:45 PM CDT
In force: 4 hr
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 36 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 157 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: 2 J/kg
Mixed-layer CIN: -406 J/kg
Mixed-layer LCL: 2470 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 319 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 
WGUS53 KEAX 090040
FFWMCI
MOC101-090445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
739 PM CDT WED MAY 8 2002

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JOHNSON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 1145 PM CDT

* AT 734 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ALONG A LINE EXTENDING FROM
  BATES CITY TO STRASBURG TO HARRISONVILLE...MOVING EAST AT 25 MPH.
  THIS REPLACES THE URBAN AND SMALL STREAM FLOOD ADVISORY THAT WAS 
  IN EFFECT.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL LEAD TO RAPID
  RISES...AND THE THREAT OF FLASH FLOODING...ON THE FOLLOWING STREAMS
  AND CREEKS

  THE BLACK WATER AND ITS TRIBUTARIES.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...WARRENSBURG...
WHITEMAN AFB...PITTSVILLE...LEETON...KNOB NOSTER...HOLDEN...
FAYETTEVILLE...COLUMBUS AND CENTERVIEW.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLASH FLOODING.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
PLEASANT HILL.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

LAT...LON 3859 9410 3891 9408 3892 9351 3857 9352

PC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:02 PM CDT	Tornado Warning	EAX	Clay, Clinton	43 min
May 8, 7:05 PM CDT	Severe Thunderstorm Warning	EAX	Daviess	55 min
May 8, 7:09 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette	66 min
May 8, 7:13 PM CDT	Severe Thunderstorm Warning	EAX	Worth	47 min
May 8, 7:20 PM CDT	Flash Flood Warning	EAX	Lafayette	4 hr
May 8, 7:22 PM CDT	Tornado Warning	EAX	Harrison, Worth	38 min
May 8, 7:29 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	61 min
May 8, 7:33 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	57 min
May 8, 7:37 PM CDT	Severe Thunderstorm Warning	EAX	Saline	53 min
May 8, 7:45 PM CDT	Severe Thunderstorm Warning	EAX	Grundy	60 min
May 8, 7:54 PM CDT	Flash Flood Warning	EAX	Cass, Jackson	3 hr
May 8, 7:55 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Daviess, Livingston	65 min
May 8, 7:57 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Henry	63 min
May 8, 8:00 PM CDT	Flash Flood Warning	EAX	Cooper, Howard, Pettis, Saline	4 hr
May 8, 8:02 PM CDT	Severe Thunderstorm Warning	EAX	Pettis	58 min
May 8, 8:17 PM CDT	Severe Thunderstorm Warning	EAX	Macon, Randolph	43 min
May 8, 8:18 PM CDT	Flash Flood Warning	EAX	Henry	4 hr
May 8, 8:26 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Howard	64 min
May 8, 8:45 PM CDT	Severe Thunderstorm Warning	EAX	Macon	30 min
May 8, 9:04 PM CDT	Severe Thunderstorm Warning	EAX	Bates	56 min
May 8, 9:22 PM CDT	Severe Thunderstorm Warning	EAX	Henry	53 min

Nearby

Flash Flood Warnings in Missouri, 2002 Every flash flood warning in 2002

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.