Alert archive / Missouri / Flash Flood Warnings in 1989

Flash Flood Warning 2, NWS Kansas City, MO

July 30, 1989Boone County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jul 30, 1989, 8:40 AM CDT for Boone County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 30, 1989, 8:40 AM CDT (13:40 UTC)
Expired: Jul 30, 1989, 11:45 AM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Whole counties

County Boone County, MO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 1.7 hours before the alert went out and 267 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: 1145 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1219 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 96 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 KCOU 301340
FFWCOU
MOC019-301645-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE COLUMBIA MO
840 AM CDT SUN JUL 30 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 1145 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF MISSOURI
      BOONE...CITY OF COLUMBIA

AT 830 PM CDT THUNDERSTORMS WITH HEAVY RAIN CONTINUED TO MOVE
THROUGH BOONE COUNTY..WITH MORE THUNDERSTORMS APPROACHING. THREE
FEET OF WATER WAS REPORTED OVER I-70 DR SE JUST EAST OF SUNRISE
ESTATES OF COLUMBIA..AND CENTRALIA REPORTED FLOODING OVER THEIR
ROADS. MORE FLASH FLOODING IS EXPECTED AS EXTREMELY HEAVY RAIN
CONTINUES. AT 830 PM CENTRALIA REPORTED ALMOST 3 1/2 INCHES OF
RAIN AND COLUMBIA REGIONAL AIRPORT WAS OVER 4 INCHES FOR THE DAY.

A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE< ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED IMMEDIATELY.
MOVE TO HIGHER GROUND.

 GV

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, Jul 30, 5:47 AM CDT, 2 hours 53 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE KANSAS CITY INTERNATIONAL AIRPORT MO
540 AM CDT SUN JUL 30 1989

AT 525 AM...SHOWERS AND THUNDERSTORMS WERE SCATTERED FROM SOUTHERN
IOWA TO EASTERN AND OVER NORTHWEST MISSOURI.

THUNDERSTORMS WERE RAPIDLY DEVELOPING OVER NORTHWEST MISSOURI.
STORMS OVER EASTERN PORTIONS OF THE KANSAS CITY METRO AREA HAVE PRODUCED
SOME WIND DAMAGE WITH TREE BRANCHES DOWN AND POWER OUTAGES BEING REPORTED
IN THE BRIGHTON AREA OF KANSAS CITY.  THUNDERSTORMS CAN BE EXPECTED
TO CONTINUE TO DEVELOP OVER NORTHWEST AND WEST CENTRAL MISSOURI OVER
THE NEXT SEVERAL HOURS PRODUCING VERY HEAVY RAIN..GUSTY WINDS AND
DANGEROUS LIGHTING.

MOVEMENT OF THE SjHOWERS AND THUNDERSTORMS WAS SOUTH AT 20 MPH.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 9:50 AM CDT	Flash Flood Warning	EAX	Howard	115 min
Jul 30, 9:50 AM CDT	Flash Flood Warning	EAX	Callaway	115 min

Nearby

Flash Flood Warnings in Missouri, 1989 Every flash flood warning in 1989

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.