Alert archive / Missouri / Flash Flood Warnings in 1993

Flash Flood Warning 29, NWS St. Louis, MO

July 6, 1993Franklin County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 6, 1993, 6:47 PM CDT for Franklin County, Missouri. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jul 6, 1993, 6:47 PM CDT (23:47 UTC)
Expired
Jul 6, 1993, 10:45 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Franklin County, MO

The radar

The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 23:49 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

Paducah/Barkley, KY (KPAH), launched 12:00Z, 11.8 hours before the alert went out and 257 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 12:00Z on 1993-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1993-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
92 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 062350
FFWSTL
MOC071-070345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
647 PM CDT TUE JUL 6 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...FRANKLIN COUNTY
 
...A FLASH FLOOD WARNING HAS BEEN ISSUED FOR FRANKLIN COUNTY UNTIL
1030 PM...
 
AT 645 PM...A FLASH FLOOD WARNING IS IN EFFECT FOR FRANKLIN COUNTY UNTIL
1030 PM.  RADAR ESTIMATES ONE TO TWO INCHES HAVE FALLEN IN THIS COUNTY
SINCE 400 PM. THE WASHINGTON CITY POLICE HAVE REPORTED STREAMS NEAR
BANKFULL.
 
RADAR WAS SHOWING MODERATE RAINS OVER THE NORTH PART OF
FRANKLIN COUNTY. THUNDERSTORMS WITH HEAVIER RAIN WERE WEST OF THIS
AREA FROM NORTHERN FRANKLIN COUNTY WEST TO JEFFERSON CITY.  THESE
STORMS ARE EXPECTED TO CONTINUE MOVING EAST INTO FRANKLIN COUNTY
BETWEEN 700 AND 1000 PM. WITH ADDITIONAL RAINS EXPECTED THIS EVENING ON
TOP OF ALREADY SATURATED GROUNDS RESIDENTS CAN EXPECT FLOODING OF
STREAMS AND LOW LYING AREAS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO9
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
GKS

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 6, 3:59 PM CDT, 2 hours 48 minutes before
MOZALL-062200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
359 PM CDT TUE JUL 6 1993

...SEVERE THUNDERSTORM WATCH NUMBER 602 HAS BEEN ISSUED FOR PORTIONS
   OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM...

AT 350 PM...NWS DOPPLER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS
EXTENDING FROM THE ST. LOUIS AREA SOUTHWEST TO 25 MILES EAST OF ROLLA.
STORM MOVEMENT WAS TO THE EAST AT 25 MPH.

A SEVERE THUNDERSTORM WATCH WAS NOW IN EFFECT FOR PORTIONS OF
EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM. IF ANY OF THESE
STORMS MOVE INTO YOUR AREA...MOVE TO SHELTER. STAY TUNED TO NOAA WEATHER
RADOR OR LOCAL TV BROADCASTS FOR THE LATEST STATEMENTS.

GOETSCH
Special weather statement, Jul 6, 4:01 PM CDT, 2 hours 46 minutes before
MOZALL-062200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
359 PM CDT TUE JUL 6 1993

...SEVERE THUNDERSTORM WATCH NUMBER 602 HAS BEEN ISSUED FOR PORTIONS
   OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM...

AT 350 PM...NWS DOPPLER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS
EXTENDING FROM THE ST. LOUIS AREA SOUTHWEST TO 25 MILES EAST OF ROLLA.
STORM MOVEMENT WAS TO THE EAST AT 25 MPH.

A SEVERE THUNDERSTORM WATCH WAS NOWW IN EFFECT FOR PORTIONS OF
EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM. IF ANY OF THESE
STORMS MOVE INTO YOUR AREA...MOVE TO SHELTER. STAY TUNED TO NOAA WEATHER
RADOR OR LOCAL TV BROADCASTS FOR THE LATEST STATEMENTS.

GOETSCH
Special weather statement, Jul 6, 5:35 PM CDT, 1 hour 12 minutes before
MOZ006-009-010-011-013-014-062330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
535 PM CDT TUE JUL 6 1993

...FLASH FLOOD WATCH IN EFFECT TONIGHT...

AT 530 PM A BAND OF THUNDERSTORMS ABOUT 5 MILES WIDE EXTENDED FROM
THE CITY OF COLUMBIA TO ABOUT 25 MILES SOUTH OF SEDALIA NEAR STOVER.
THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 25 MILES AN HOUR.
A WEATHER SPOTTER IN BOONEVILLE REPORTED WIND GUSTS AS HIGH AS 45
MILES AN HOUR WITH THESE THUNDERSTORMS AT 520 PM...ALSO EXPECT
TORRENTIAL RAIN...AND DEADLY LIGHTNING STRIKES. THE GROUND AROUND
CENTRAL MISSOURI IS ALREADY SATURATED AND ANY ADDITIONAL RAINFALL
TONIGHT WILL CAUSE FLOODING...AND POSSIBLY FLASH FLOODING.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND IF
NECESSARY WARNINGS.
LA GREE
Special weather statement, Jul 6, 5:35 PM CDT, 1 hour 12 minutes before
MOZ006-009-010-011-013-014-062330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
535 PM CDT TUE JUL 6 1993

...FLASH FLOOD WATCH IN EFFECT TONIGHT...

AT 530 PM A BAND OF THUNDERSTORMS ABOUT 5 MILES WIDE EXTENDED FROM
THE CITY OF COLUMBIA TO ABOUT 25 MILES SOUTH OF SEDALIA NEAR STOVER.
THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 25 MILES AN HOUR.
A WEATHER SPOTTER IN BOONEVILLE REPORTED WIND GUSTS AS HIGH AS 45
MILES AN HOUR WITH THESE THUNDERSTORMS AT 520 PM...ALSO EXPECT
TORRENTIAL RAIN...AND DEADLY LIGHTNING STRIKES. THE GROUND AROUND
CENTRAL MISSOURI IS ALREADY SATURATED AND ANY ADDITIONAL RAINFALL
TONIGHT WILL CAUSE FLOODING...AND POSSIBLY FLASH FLOODING.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND IF
NECESSARY WARNINGS.
LA GREE
Special weather statement, Jul 6, 6:11 PM CDT, 36 minutes before
MOZ012-018-022-ILZ011-012-013-070115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
611 PM CDT TUE JUL 6 1993

...SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR EAST CENTRAL AND
SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS UNTIL 900 PM...

AT 610 PM...THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL
MISSOURI...INCLUDING THE ST. LOUIS METRO AREA...SOUTHWEST ILLINOIS...
AND SOUTHEAST MISSOURI CONTINUES UNTIL 900 PM.  RADAR WAS DETECTING
STRONGEST STORMS NEAR REILY LAKE IN SOUTHWESTERN RANDOLPH COUNTY
AND IN ELKTON IN WESTERN WASHINGTON COUNTY.  STORMS WERE MOVING TO THE
EAST AT 25 MPH.  THESE STORMS WILL PRODUCE HEAVY RAINS...DEADLY
LIGHTNING AND STRONG GUSTY WINDS.

REMEMBER...A WATCH MEANS THAT CONDTIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF STORMS WHICH MAY PRODUCE DAMAGING WINDS AND LARGE HAIL.
RESIDENTS IN AND NEAR THE WATCH AREA SHOULD BE PREPARED TO SEEK SAFE
SHELTER IF THREATENING WEATHER APPROACHES.  CONTINUE TO LISTEN TO NOAA
WEATHER RADIO AND LOCAL MEDIA SOURCES FOR FURTHER STATEMENTS AND
POSSIBLE WARNINGS.

GKS
Special weather statement, Jul 6, 6:14 PM CDT, 33 minutes before
MOZ012-018-022-ILZ011-012-013-070115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
611 PM CDT TUE JUL 6 1993

...SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR EAST CENTRAL AND
SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS UNTIL 900 PM...

AT 610 PM...THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL
MISSOURI...INCLUDING THE ST. LOUIS METRO AREA...SOUTHWEST ILLINOIS...
AND SOUTHEAST MISSOURI CONTINUES UNTIL 900 PM.  RADAR WAS DETECTING
STRONGEST STORMS NEAR REILY LAKE IN SOUTHWESTERN RANDOLPH COUNTY
AND IN ELKTON IN WESTERN WASHINGTON COUNTY.  STORMS WERE MOVING TO THE
EAST AT 25 MPH.  THESE STORMS WILL PRODUCE HEAVY RAINS...DEADLY
LIGHTNING AND STRONG GUSTY WINDS.

REMEMBER...A WATCH MEANS THAT CONDTIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF STORMS WHICH MAY PRODUCE DAMAGING WINDS AND LARGE HAIL.
RESIDENTS IN AND NEAR THE WATCH AREA SHOULD BE PREPARED TO SEEK SAFE
SHELTER IF THREATENING WEATHER APPROACHES.  CONTINUE TO LISTEN TO NOAA
WEATHER RADIO AND LOCAL MEDIA SOURCES FOR FURTHER STATEMENTS AND
POSSIBLE WARNINGS.

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:18 PM CDTSevere Thunderstorm WarningLSXPhelps25 min
Jul 6, 4:07 PM CDTSevere Thunderstorm WarningLSXCrawford30 min
Jul 6, 4:07 PM CDTSevere Thunderstorm WarningLSXWashington53 min
Jul 6, 4:42 PM CDTSevere Thunderstorm WarningLSXSaint Francois48 min
Jul 6, 5:05 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve40 min

Nearby

Flash Flood Warnings in Missouri, 1993Every flash flood warning in 1993

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.