Alert archive / Missouri / Flash Flood Warnings in 1998

Flash Flood Warning 32, NWS St. Louis, MO

July 29, 1998Osage County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 29, 1998, 5:53 AM CDT for Osage County, Missouri. It was in force for 6 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 29, 1998, 5:53 AM CDT (10:53 UTC)
Expired
Jul 29, 1998, 11:55 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Osage County, MO

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 10.9 hours before the alert went out and 243 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, Springfield, MO at 00:00Z on 1998-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 487 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, Springfield, MO at 00:00Z on 1998-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
487 J/kg
Mixed-layer CIN
-120 J/kg
Mixed-layer LCL
1295 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 291054
FFWSTL
MOC051-135-151-291650-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
553 AM CDT WED JUL 29 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COLE COUNTY IN CENTRAL MISSOURI
  MONITEAU COUNTY IN CENTRAL MISSOURI
  OSAGE COUNTY IN CENTRAL MISSOURI

* UNTIL 1155 AM CDT

* A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM
  LINN TO JEFFERSON CITY TO SEDALIA...MOVING EAST AT 5 MPH.

* THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THE SAME AREA FOR THE
  NEXT SEVERAL HOURS. ONE TO TWO INCHES OF RAIN CAN BE EXPECTED IN
  ONE HOUR. COMMUNITIES IN THE THREATENED AREA INCLUDE: TIPTON...
  CALIFORNIA...CENTERTOWN...RUSSELLVILLE...JEFFERSON CITY...LINN...
  AND WESTPHALIA.

  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO
  CROSS BRIDGES...DIPS...OR LOW-WATER CROSSINGS IF WATER COVERS THE
  ROAD. DO NOT DRIVE AROUND BARRICADES. IF YOUR VEHICLE STALLS
  ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. RAPIDLY RISING
  WATER MAY SWEEP THE VEHICLE AND ITS OCCUPANTS AWAY.

  RCE/DM

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 5:53 AM CDTFlash Flood WarningLSXCole, Moniteau6 hr
Jul 29, 5:56 PM CDTTornado WarningLSXAudrain, Pike44 min

Nearby

Flash Flood Warnings in Missouri, 1998Every flash flood warning in 1998

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.