Alert archive / Missouri / Flash Flood Warnings in 2003

Flash Flood Warning 36, NWS St. Louis, MO

August 1, 2003Jefferson County, Sainte Genevieve County, Saint Francois County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 1, 2003, 3:49 PM CDT for Jefferson County, Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 1, 2003, 3:49 PM CDT (20:49 UTC)
Expired
Aug 1, 2003, 8:45 PM CDT
In force
5 hr
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.8 hours before the alert went out and 285 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, Lincoln, IL at 12:00Z on 2003-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1369 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2003-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
1369 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
1402 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 012102
FFWLSX
MOC099-186-187-020145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
349 PM CDT FRI AUG 1 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI
  NORTHWESTERN ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI
  NORTHERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI

* UNTIL 845 PM CDT

* AT 349 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED AN EAST TO 
WEST LINE OF THUNDERSTORMS FROM 20 MILES SOUTHWEST OF DESOTO EAST TO 
15 MILES NORTHWEST OF STE. GENEVIEVE. INDIVIDUAL STORMS HAVE BEEN 
MOVING SLOWLY TO THE EAST...BUT NEW STORMS HAVE BEEN DEVELOPING ON 
THE WEST SIDE OF THE STORM COMPLEX.  

INTENSE RAINFALL AMOUNTS OF UP TO 3 TO 5 INCHES HAVE FALLEN ALONG 
AND NEAR THE COUNTY LINE BETWEEN JEFFERSON...STE. GENEVIEVE...AND 
ST. FRANCOIS COUNTIES...INCLUDING THE COMMUNITIES OF VALLES 
MINES...BLACKWELL..AND FRENCH VILLAGE.  SMALL TRIBUTARIES OF THE
BIG RIVER IN THAT AREA ALONG WITH JOACHIM CREEK...SUMMER LAKE...
AND OTHER LOW WATER BRIDGES AND LOW AREAS. 

DUE TO THE ROUGH TERRAIN OF THE AREA FLASH FLOODING WILL BE IMMINENT
FOR THAT AREA. 

HEAVY RAIN WILL CONTINUE FOR AT LEAST THE NEXT HOUR OR TWO WITH 
MAJOR WATER RUNOFF CONTINUING INTO THE EVENING HOURS. 

IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER
GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD.

LAT...LON 3812 9071 3821 9081 3820 9033 3797 9002
          3788 8995 3783 9048 3795 9065

$$
PEDIGO
2 follow-up statements
000 
WGUS73 KLSX 020050
FFSLSX
MOC099-186-187-020145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
735 PM CDT FRI AUG 1 2003

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN ST.
FRANCOIS...NORTHERN STE. GENEVIEVE AND SOUTHERN JEFFERSON COUNTIES
UNTIL 845 PM CDT...

AT 735 PM CDT...THE STORMS WHICH CREATED UP TO 4 TO 7 INCHES OF 
RAINFALL NEAR THE SOUTHERN JEFFERSON COUNTY LINE AND JUST SOUTH IN 
NORTHERN PORTIONS OF ST. FRANCOIS COUNTY AND STE. GENEVIEVE COUNTY 
HAVE DRIFTED TO THE SOUTH. A FEW LIGHTER SHOWERS HAVE DRIFTED IN AND 
OUT THROUGH THE AREA.  

LAW ENFORCEMENT REPORTED FLASH FLOODING FROM DESOTO TO VALLEY MINES
IN JEFFERSON COUNTY AND ALONG JOACHIM CREEK.  COMMUNITIES OF 
TIMBERLINE CREEK...FRENCH VILLAGE...AND GOOSE CREEK IN EXTREME 
NORTHERN ST. FRANCOIS COUNTY ALSO REPORTED COPIOUS RAINFALL IN A 
SHORT PERIOD OF TIME.

HIGHWAYS V AND E IN JEFFERSON COUNTY AND ALSO MILLER STREET ALONG 
JOACHIM CREEK IN DESOTO ARE CLOSED AND JOACHIM CREEK IS OUT OF ITS 
BANKS IN SEVERAL AREAS. 

THERE IS ONE MORE HEAVY STORM WHICH HAS DEVELOPED NEAR ROLLA MISSOURI
THIS EVENING THAT COULD MOVE INTO THE AREA LATER ON THIS EVENING. 
IN ADDITION...RUNOFF FROM THE COPIOUS AMOUNT OF RAIN IN SUCH A SHORT
PERIOD OF TIME WILL CONTINUE TO MOVE FROM DITCHES AND STREAMS INTO
LARGER STREAMS AND TRIBUTARIES...PARTICULARLY THE BIG RIVER.  

KEEP ABREAST OF LOCAL WEATHER DEVELOPMENTS THROUGH THE EVENING.  THE
FLASH FLOOD WARNING WILL BE ALLOWED TO CONTINUE THROUGH 845 PM AND
IF THE STORMS TO THE WEST CONTINUE TO BLOOM THIS WARNING COULD 
POSSIBLY BE EXTENDED IN TIME.

WE ARE NOW ENTERING THE DARKNESS OF THE NIGHT. THIS IS WHEN MOST 
PEOPLE ARE KILLED...THEY CANNOT SEE AS WELL AND WALK OR DRIVE INTO 
THE MURKY WATERS OF THE NIGHT.  DO NOT BECOME A STATISTIC...REMAIN 
CAUTIOUS AND VIGILENT

$$
PEDIGO
000 
WGUS73 KLSX 020211
FFSLSX
MOC099-186-187-020300-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
854 PM CDT FRI AUG 1 2003

...FLASH FLOOD WARNING FOR NORTHWESTERN ST. FRANCOIS...NORTHERN STE.
GENEVIEVE AND SOUTHERN JEFFERSON COUNTIES HAS EXPIRED...

WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH
PROMPTED THE FLASH FLOOD WARNING HAVE MOVED OUT OF THE AREA.

WEATHER SERVICE DOPPLER PRECIPITATION ESTIMATES INDICATE THAT 
RAINFALL TOTALS IN EXTREME SOUTHERN JEFFERSON COUNTY AND ALONG THE 
NORTHERN BORDER OF ST. FRANCOIS AND STE. GENEVIEVE COUNTIES MAY HAVE 
REACHED 4 TO 7 INCHES OF RAINFALL...MOST OF WHICH FELL IN TWO HOURS
OR LESS.  

MEDIA REPORTS INDICATE SERIOUS FLOODING OCCURRED AS FAR NORTH AS
DESOTO MISSOURI AND FURTHER SOUTH ALONG AND NEAR JOACHIM CREEK.
CERTAINLY THE HILLY TERRAIN CAUSED FLASH FLOODING AND AS STREAMS
AND TRIBUTARIES CONTINUE TO CARRY OFF THE EVENING RAINFALL THEY
WILL REMAIN SWOLLEN OR POSSIBLY FLOODED FOR A BRIEF TIME THROUGH 
SOME PORTION OF THE NIGHT.

THE THREAT FOR HEAVY RAINFALL HAS ENDED FOR THE NIGHT. HOWEVER IF 
YOU ARE OUTSIDE OR MOBILE YOU SHOULD TAKE PRECAUTIONS NOT TO BE
WHERE WATER REMAINS.  IN ADDITION TO SAFE TRAVEL THOSE WITH FLOODED
BASEMENTS OR AREAS IN OR NEAR RESIDENCES SHOULD UNDERSTAND THAT
FLOODED AREAS AND ELECTRICITY DO NOT MIX...STAY AWAY AND CALL A 
FIRE DEPARTMENT OR LAW ENFORCEMENT AND ALLOW THEM TO USE THEIR
EXPERTISE TO DECIDE WHAT TO DO. 

FINALLY...SOMETIMES WARNINGS SOUND THE SAME OR SEEM REPETITIOUS.
THANKS FROM THE NATIONAL WEATHER SERVICE FOR LISTENING AND TAKING 
PRECAUTIONS.  IT MAKES OUR JOB EASIER AND GIVES US ALL A HAPPY 
ENDING.

$$
PEDIGO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 2:56 PM CDTSevere Thunderstorm WarningLSXJefferson, Sainte Genevieve, Saint Francois49 min
Aug 1, 4:56 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Francois49 min
Aug 1, 5:06 PM CDTTornado WarningLSXMadison, Saint Francois39 min
Aug 1, 5:23 PM CDTSevere Thunderstorm WarningLSXIron22 min
Aug 1, 5:44 PM CDTSevere Thunderstorm WarningLSXIron46 min
Aug 1, 5:45 PM CDTSevere Thunderstorm WarningLSXMadison45 min
Aug 1, 6:28 PM CDTSevere Thunderstorm WarningLSXMadison62 min
Aug 1, 6:33 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds42 min

Nearby

Flash Flood Warnings in Missouri, 2003Every flash flood warning in 2003

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.