Alert archive / Missouri / Flash Flood Warnings in 1993

Flash Flood Warning 30, NWS St. Louis, MO

July 6, 1993Franklin County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 6, 1993, 10:37 PM CDT for Franklin County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 6, 1993, 10:37 PM CDT (03:37 UTC)
Expired: Jul 7, 1993, 1:45 AM CDT
In force: 3 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 03:40 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 00:00Z, 3.6 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-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: 2159 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 070341
FFWSTL
MOC071-070645-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1037 PM CDT TUE JUL 6 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  145 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...FRANKLIN COUNTY
 
THE NATIONAL WEATHER SERVICE HAS EXTENDED THE FLASH FLOOD WARNING FOR
FRANKLIN COUNTY.  TWO TO FOUR INCHES OF RAIN HAVE FALLEN IN FRANKLIN
COUNTY THIS EVENING AND MORE RAIN IS EXPECTED OVERNIGHT.  ALTHOUGH NO
FLOODING HAS BEEN REPORTED...THE ADDITIONAL RAIN WILL ACCELERATE THE
FLOODING PROCESS.
 
AT 1035 PM...SHOWERS AND THUNDERSTORMS...SOME CONTAINING TORRENTIAL RAIN
...COVERED ALL OF CENTRAL AND EAST CENTRAL MISSOURI.  THE RAIN WAS MOVINTO THE EAST AT 30 MILES AN HOUR AND WILL CONTINUE IN FRANKLIN COUNTY
PAST MIDNIGHT.
 
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.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.a  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
MORSE

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, 7:22 PM CDT, 3 hours 15 minutes before

MOZ012-018-022-ILZ011-012-013-070230-

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

...A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR EAST CENTRAL AND
SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS...

AT 720 PM...THE SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL 900
PM FOR EAST CENTRAL MISSOURI...INCLUDING THE ST. LOUIS METRO
AREA...SOUTHEAST MISSOURI...AND SOUTHWEST ILLINOIS. RADAR WAS DETECTING
THUNDERSTORMS FROM 30 MILES SOUTHWEST OF FARMINGTON MISSOURI TO
NEAR MT. VERNON ILLINOIS.  THUNDERSTORMS WITH HEAVY RAINS WERE IN
NORTHERN IRON COUNTY AND JUST NORTHWEST OF MT. VERNON.  THESE STORMS
WERE MOVING TO THE NORTHEAST 30 MPH. THESE STORMS WILL PRODUCE HEAVY
RAINS...DEADLY LIGHTNING AND STRONG GUSTY WINDS.

RESIDENTS IN AND CLOSE TO THE WATCH AREA SHOULD BE PREPARED TO SEEK
SHELTER IF THREATENING WEATHER APPROACHES AS A FEW STORMS MAY PRODUCE
DAMAGING WINDS AND LARGE HAIL.  CONTINUE TO LISTEN TO NOAA WEATHER RADIO
AND LOCAL MEDIA SOURCES FOR LATER STATEMENTS AND POSSIBLE WARNINGS ON
THIS POTENTIALLY DANGEROUS WEATHER SITUATION.

GKS

Special weather statement, Jul 6, 7:25 PM CDT, 3 hours 12 minutes before

MOZ012-018-022-ILZ011-012-013-070230-

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

...A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR EAST CENTRAL AND
SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS...

AT 720 PM...THE SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL 900
PM FOR EAST CENTRAL MISSOURI...INCLUDING THE ST. LOUIS METRO
AREA...SOUTHEAST MISSOURI...AND SOUTHWEST ILLINOIS. RADAR WAS DETECTING
THUNDERSTORMS FROM 30 MILES SOUTHWEST OF FARMINGTON MISSOURI TO
NEAR MT. VERNON ILLINOIS.  THUNDERSTORMS WITH HEAVY RAINS WERE IN
NORTHERN IRON COUNTY AND JUST NORTHWEST OF MT. VERNON.  THESE STORMS
WERE MOVING TO THE NORTHEAST 30 MPH. THESE STORMS WILL PRODUCE HEAVY
RAINS...DEADLY LIGHTNING AND STRONG GUSTY WINDS.

RESIDENTS IN AND CLOSE TO THE WATCH AREA SHOULD BE PREPARED TO SEEK
SHELTER IF THREATENING WEATHER APPROACHES AS A FEW STORMS MAY PRODUCE
DAMAGING WINDS AND LARGE HAIL.  CONTINUE TO LISTEN TO NOAA WEATHER RADIO
AND LOCAL MEDIA SOURCES FOR LATER STATEMENTS AND POSSIBLE WARNINGS ON
THIS POTENTIALLY DANGEROUS WEATHER SITUATION.

GKS

Special weather statement, Jul 6, 8:58 PM CDT, 1 hour 39 minutes before

MOZ012-018-022-ILZ011-013-070300-

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

...THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL AND SOUTHEAST
MISSOURI HAS EXPIRED...

AT 900 PM...A LARGE AREA OF SHOWERS AND THUNDERSTORMS EXTENDED FROM
CENTRAL ILLINOIS TO WESTERN MISSOURI.  THE SHOWERS AND THUNDERSTORMS
WERE MOVING TO THE EAST AT 30 MILES AN HOUR.  NO SEVERE WEATHER HAS
BEEN REPORTED SINCE 530 PM. THE THREAT OF SEVERE WEATHER HAS DIMINISHED
AND THE SEVERE THUNDERSTORM WATCH HAS EXPIRED.  HOWEVER...THE STORMS
WILL CONTINUE TO PRODUCE BREIF PERIOD OF VERY HEAVY RAIN THROUGHOUT
THE NIGHT.  THEREFORE...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE
CENTRAL THIRD OF MISSOURI.

STAYED TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND TV STATIONS
FOR THE LATEST INFORMATION ON THESE STORMS.

MORSE

Special weather statement, Jul 6, 9:01 PM CDT, 1 hour 36 minutes before

MOZ012-018-022-ILZ011-013-070300-

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

...THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL AND SOUTHEAST
MISSOURI HAS EXPIRED...

AT 900 PM...A LARGE AREA OF SHOWERS AND THUNDERSTORMS EXTENDED FROM
CENTRAL ILLINOIS TO WESTERN MISSOURI.  THE SHOWERS AND THUNDERSTORMS
WERE MOVING TO THE EAST AT 30 MILES AN HOUR.  NO SEVERE WEATHER HAS
BEEN REPORTED SINCE 530 PM. THE THREAT OF SEVERE WEATHER HAS DIMINISHED
AND THE SEVERE THUNDERSTORM WATCH HAS EXPIRED.  HOWEVER...THE STORMS
WILL CONTINUE TO PRODUCE BREIF PERIOD OF VERY HEAVY RAIN THROUGHOUT
THE NIGHT.  THEREFORE...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE.
CENTRAL THIRD OF MISSOURI.

STAYED TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND TV STATIONS
FOR THE LATEST INFORMATION ON THESE STORMS.

MORSE

Local storm report, Jul 6, 10:03 PM CDT, 34 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1003 PM CDT TUE JUL 6 1993

...PRELIMINARY REPORTS FOR THE AFTERNOON AND EVENING OF JULY 6...

TIME (CDT)    COUNTY         EVENT
420 PM        CRAWFORD &     NUMEROUS TREES WERE KNOCKED DOWN IN AND
              WASHINGTON     NEAR BERRYMAN ALONG THE COUNTY LINE.
              MISSOURI       REPORTED BY CRAWFORD COUNTY SHERIFF.

530 PM        STE GENEVIEVE  TREES AND POWER LINES DOWN IN BLOOMSDALE.
              MISSOURI       REPORTED BY COUNTY SHERIFF.

SHEA

Local storm report, Jul 6, 10:04 PM CDT, 33 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1003 PM CDT TUE JUL 6 1993

...PRELIMINARY REPORTS FOR THE AFTERNOON AND EVENING OF JULY 6...

TIME (CDT)    COUNTY         EVENT
420 PM        CRAWFORD &     NUMEROUS TREES WERE KNOCKED DOWN IN AND
              WASHINGTON     NEAR BERRYMAN ALONG THE COUNTY LINE.
              MISSOURI       REPORTED BY CRAWFORD COUNTY SHERIFF.

530 PM        STE GENEVIEVE  TREES AND POWER LINES DOWN IN BLOOMSDALE.
              MISSOURI       REPORTED BY COUNTY SHERIFF.

SHEA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 12:36 AM CDT	Flash Flood Warning	LSX	Crawford	4 hr
Jul 7, 9:19 AM CDT	Flash Flood Warning	LSX	Lincoln	109 min
Jul 7, 1:34 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	41 min
Jul 7, 2:03 PM CDT	Flash Flood Warning	LSX	Saint Charles	5 hr
Jul 7, 2:16 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	44 min

Nearby

Flash Flood Warnings in Missouri, 1993 Every 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.