Alert archive / Missouri / Flash Flood Warnings in 1992

Flash Flood Warning 6, NWS St. Louis, MO

July 20, 1992Warren County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 20, 1992, 8:35 PM CDT for Warren County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 20, 1992, 8:35 PM CDT (01:35 UTC)
Expired
Jul 21, 1992, 12:00 AM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Warren County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.6 hours before the alert went out and 287 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, Paducah/Barkley, KY at 00:00Z on 1992-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1127 joules per kilogram.LCLEL10008507005003002001001 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, Paducah/Barkley, KY at 00:00Z on 1992-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.1939Sfc1 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
1127 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1375 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
24 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 KSTL 210135
FFWSTL
MOC219-210500-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
835 PM CDT MON JUL 20 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1200 AM CDT
 ...
 
IN EAST CENTRAL MISSOURI
 
   ...WARREN COUNTY
 
AT 825 PM...NWS DOPPLER RADAR SHOWED AN AREA OF SHOWERS AND
THUNDERSTORMS EXTENDING FROM SOUTH OF HERMAN TO SOUTH OF WRIGHT
CITY...IN WARREN COUNTY MISSOURI...45 MILES WEST OF ST. LOUIS.
THE AREA AVERAGED 40 MILES WIDE. AREAL MOVEMENT WAS VERY
LITTLE...WITH STORM MOVEMENT TO THE EAST AT 20 MPH.
 
DOPPLER RADAR INDICATED THAT RAINFALL AMOUNTS OF 1.5 TO 2 INCHES
HAD POSSIBLY FALLEN OVER PORTIONS OF WARREN COUNTY SINCE 5 PM.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE...
MAKING FLASH FLOODING LIKELY IN MANY AREAS OF WARREN COUNTY
MISSOURI.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
JP/EHG

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 20, 5:50 PM CDT, 2 hours 45 minutes before
MOZ006-009-010-013-014-202330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
445 PM CDT MON JUL 20 1992

...STRONG THUNDERSTORMS CONTINUED OVER CENTRAL MISSOURI...

AT 445PM...SCATTERED THUNDERSTORMS WERE LOCATED ALONG THE FRONT THAT
BISECTED THE STATE FROM JUST NORTH OF ST LOUIS...TO NEAR JOLIN.  THE
STRONGEST STORMS WERE LOCATED IN A NARROW LINE THAT STRETCHED FROM ST
LOUIS...TO JEFFERSON CITY...TO 50 MILES SOUTHWEST OF JEFFERSON CITY.
THE LINE SHOWED LITTLE MOVEMENT...BUT INDIVIDUAL STORMS WERE MOVING
EAST AT 20 MPH.

HEAVY RAINS...STRONG GUSTY WINDS...SMALL HAIL AND DANGEROUIS LIGHTNING
CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE THROUGH CENTRAL MISSOURI
DURING THE NEXT SEVERAL HOURS.  THE COMMUNITIES MOST VULNERABLE TO
THESE STRONG STORMS ARE THOSE FROM THE LAKE OF THE OZARKS...TO AROUND
JEFFERSON CITY...TO HERMANN MISSOURI.
.
RESIDENTS IN CENTRAL AND SOUTH CENTRAL MISSOURI SHOULD BE ON THE ALERT
FOR RAPIDFLY CHANGING WEATHER CONDITIONS...AND STAY TONE TO WEATHER RADIO
FOR FURTHER UPDATES OR POSSIBLE WARNINGS.

REPORT ANY SEVERE WEATHER SIGHTINGS TO YOUR NEAREST LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

PERLOW
Special weather statement, Jul 20, 6:23 PM CDT, 2 hours 12 minutes before
MOZ010-011-012-014-ILZ009-011-210230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
625 PM CDT MON JUL 20 1992

...THUNDERSTORMS ARE LINING UP ACROSS EAST CENTRAL MISSOURI AND
SOUTHERN ILLINOIS...

AT 615 PM CDT A NEARLY SOLID NARROW LINE OF THUNDERSTORMS TRAILED
FROM NEAR EFFINGHAM ILLINOIS...WEST SOUTHWESTWARD JUST NORTH OF
INTERSTATE 70 TO NORTHERN PORTIONS OF THE ST LOUIS METROPOLITAN
AREA...INCLUDING ST CHARLES.  THE LINE EXTENDED WEST INTO CENTRAL
MISSOURI THROUGH WRIGHT CITY...HERMANN...TO LAKE OF THE OZARKS.

INDIVIDUAL STORMS ARE MOVING EAST NORTHEAST ALONG THE LINE AND FOLLOWING
ONE ANOTHER ALONG THIS LINE. LOCALLY HEAVY RAINS ARE LIKELY THROUGH
MID EVENING." LOCAL FLOODING IS PROBABLE.

LATER STATEMENTS WILL BE ISSUED CONCERNING THIS CONDITIONS THIS
EVENING.

PEDIGO
Local storm report, Jul 20, 6:47 PM CDT, 1 hour 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
646 PM CDT MON JUL 20 1992

...REPORTS FROM THE AFTERNOON AND EVENING OF MONDAY...JULY 20TH...

TIME (CDT)      COUNTY      EVENT

1249 PM        WASHINGTON   PEA SIZE HAIL NEAR VENEDY ILLINOIS
               ILLINOIS     FROM DU QUOIN ILLINOIS POLICE.

 230 PM        RANDOLPH     THUNDERSTORM WIND GUSTY TO 60 MPH...IN
               ILLINOIS     CITY OF RUMA...FROM DISTRICT 11...ILLINOIS
                            STATE POLICE.

 235 PM        ST LOUIS COUNTY   PEA SIZE HAIL IN BALLWIN FROM
               MISSOURI          LOCAL SPOTTER.

 305 PM        ST CLAIR     MARBLE SIZE HAIL IN COLLINSVILLE
               ILLINOIS     NEAR I-255 FROM COUNTY SHERIFF.

 345 PM        FRANKLIN     MARBLE SIZE 1 MILE WEST OF BUFORD AND
               MISSOURI     NEAR LESLIE FROM COUNTY SHERIFF.

 403 PM        FRANKLIN     3/4 INCH HAIL 5 MILES WEST OF UNION
               MISSOURI     FROM COUNTY EMS.

 412 PM        FRANKLIN     POWER LINES DOWN 5 MILES SOUTH OF
               MISSOURI     WASHINGTON NEAR HWY 50 FROM LOCAL SPOTTER.

 425-430 PM    WASHINGTON   POWER LINES DOWN AT OKAWVILLE FROM
               ILLINOIS     SHERIFF DEPARTMENT.

 435 PM        WASHINGTON   TREES UPROOTED AT COVINGTON FROM SHERIFF
               ILLINOIS     DEPARTMENT.

 500 PM        WASHINGTON   POWER LINES DOWNED IN IRVINGTON FROM
               ILLINOIS     SHERIFF DEPARTMENT

 503 PM        ST CHARLES   PEA SIZE HAIL 1/2 MILE NORTH OF NEW MELLE
               MISSOURI     FROM LOCAL SPOTTER.

 510-515 PM    ST CHARLES   1 INCH HAIL...THE SIZE OF QUARTERS...1/2
               MISSOURI     MILE EAST OF NEW MbELLE FROM SPOTTER NETWORK.
                            HAIL FLATTENED GARDEN.

LP/EHG
Special weather statement, Jul 20, 6:54 PM CDT, 1 hour 41 minutes before
ILZ010-012-210100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
650 PM CDT MON JUL 20 1992

...STRONG THUNDERSTORMS ARE OVER EFFINGHAM COUNTY AND MARION COUNTY
ILLINOIS...

AT 648 PM...NWS DOPPLER RADAR INDICATED STRONG THUNDERSTORM JUST
SOUTH OF EFFINGHAM...ILLINOIS AND ANOTHER STORM NEAR KINMUNDY...ABOUT
20 MILES SOUTHWEST OF EFFINGHAM.   THESE STORMS WERE MOVING EAST AT
15 TO 20 MPH.  THEY WILL MOVE THROUGH EFFINGHAM AND MARION COUNTIES
IN ILLINOIS BETWEEN 7 AND 8 PM.  THEY WILL PRODUCE BRIEF VERY HEAVY
RAIN...GUSTY WIND AND POSSIBLY SMALL HAIL.

THIS HEAVY RAIN WILL REDUCE VISIBILITIES TO LESS THAN 100 FEET AND
WILL CAUSE POOLING OF WATER ON AREA ROADWAYS.  DRIVERS SlHOULD BE
PREPARED TO SLOW DOWN AND POSSIBLY PULL OVER AND STOP.

TUCKER
Special weather statement, Jul 20, 6:56 PM CDT, 1 hour 39 minutes before
ILZ010-011-012-210100-

SPECIAL WEATHER STATEMENT...CORRECTEF HEADING
NATIONAL WEATHER SERVICE ST LOUIS MO
650 PM CDT MON JUL 20 1992

...STRONG THUNDERSTORMS ARE OVER EFFINGHAM COUNTY AND MARION COUNTY
ILLINOIS...

AT 648 PM...NWS DOPPLER RADAR INDICATED STRONG THUNDERSTORM JUST
SOUTH OF EFFINGHAM...ILLINOIS AND ANOTHER STORM NEAR KINMUNDY...ABOUT
20 MILES SOUTHWEST OF EFFINGHAM.   THESE STORMS WERE MOVING EAST AT
15 TO 20 MPH.  THEY WILL MOVE THROUGH EFFINGHAM AND MARION COUNTIES
IN ILLINOIS BETWEEN 7 AND 8 PM.  THEY WILL PRODUCE BRIEF VERY HEAVY
RAIN...GUSTY WIND AND POSSIBLY SMALL HAIL.

THIS HEAVY RAIN WILL REDUCE VISIBILITIES TO LESS THAN 100 FEET AND
WILL CAUSE POOLING OF WATER tON AREA ROADWAYS.  DRIVERS SHOULD BE
PREPARED TO SLOW DOWN AND POSSIBLY PULL OVER AND STOP.

TUCKER
Special weather statement, Jul 20, 7:28 PM CDT, 1 hour 7 minutes before
MOZ006-009-010-013-014-210130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
720 PM CDT MON JUL 20 1992

...A FLASH FLOOD WARNING IS IN EFFECT FOR COLE COUNTY UNTIL 830 PM...
...STRONG THUNDERSTORMS CONTINUED OVER CENTRAL MISSOURI...

AT 720PM...SCATTERED THUNDERSTORMS WERE LOCATED ALONG A FRONT THAT
BISECTED THE STATE FROM JUST NORTH OF ST LOUIS...TO NEAR JOLIN.  THE
STRONGEST STORMS WERE LOCATED IN A NARROW LINE THAT STRETCHED FROM ST
LOUIS...TO JEFFERSON CITY...TO 25 MILES SOUTHWEST OF JEFFERSON CITY.
THE LINE SHOWED LITTLE MOVEMENT...BUT INDIVIDUAL STORMS WERE MOVING
EAST AT 20 MPH.  LESSER SHOWERS WERE LOCATED OVER THE LAKE OF THE
OZARKS AND LIGHT TO MODERATE RAIN WAS OBSERVED IN THE NORTHEAST
QUADRANT OF THE STATE.

THE MOST DANGEROUS ASPECT OF THESE STORMS IS THE REPEATED MOVEMENT OF
HEAVY SHOWERS OVER AREAS ALREADY SATURATED BY PREVIOUS RAIN.  OFFICIAL
RAINFALL TOTALS AT THE JEFF CITY AIRPORT SHOWED AMOUNTS IN EXCESS OF
ONE INCH.  UNOFFICIAL REPORTS OF TWO TO THREE INCHES OF RAIN WERE
REPORTED IN AND JUST WEST OF JEFERSON CITY.

ADDITIONAL HEAVY RAINS ARE EXPECTED TO MOVE ACROSS COLE COUNTY AND THE
CAPITOL CITY FOR MOST OF EVENING.  IF YOU LIVE IN AN: AREA PRONE TO
FLOODING...YOU SHOULD MAKE PREPARATION TO MOVE TO HIGHER GROUND.

STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA FOR ADDITIONAL UPDATES OR
WARNINGS.

PERLOW

Nearby

Flash Flood Warnings in Missouri, 1992Every flash flood warning in 1992

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.