Alert archive / Missouri / Flash Flood Warnings in 2004

Flash Flood Warning 3, NWS St. Louis, MO

March 26, 2004Saint Charles County, Missouri

NWS St. Louis, MO issued this flash flood warning at Mar 26, 2004, 9:19 AM CST for Saint Charles County, Missouri. It was in force for 4 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
Mar 26, 2004, 9:19 AM CST (15:19 UTC)
Expired
Mar 26, 2004, 1:15 PM CST
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

County Saint Charles County, MO

The radar

The St Louis radar (KLSX), 21 km from the middle of the area, began a volume at 15:19 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

Lincoln, IL (KILX), launched 12:00Z, 3.3 hours before the alert went out and 222 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 2004-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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, Lincoln, IL at 12:00Z on 2004-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 392 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
22 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
547 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
392 m²/s²
0-3 km storm-relative helicity
431 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 261521
FFWLSX
MOC183-261915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
919 AM CST FRI MAR 26 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 115 PM CST

* AT 913 AM CST...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN THE SOUTHWEST CORNER OF
  ST. CHARLES COUNTY.  SINCE 6 AM...RADAR HAS ESTIMATED 2 TO 2.5
  INCHES IN THE THE AREA SOUTH OF NEW MELLE AND NORTH OF AUGUSTA
  ALONG COUNTY HIGHWAY F. MORE HEAVY RAIN WILL BE MOVING ACROSS THE
  AREA THROUGH NOON.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA ALONG FEMME OSAGE
  CREEK AND BECKER BRANCH BETWEEN NEW MELLE AND AUGUSTA.

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

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW WATER CROSSINGS IF WATER COVERS THE
ROADWAY. DO NOT DRIVE AROUND BARRICADES IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 3898 9042 3884 9010 3884 9041 3854 9096
          3889 9099 3895 9070 3888 9058

$$

DUMMER
2 follow-up statements
000 
WGUS73 KLSX 261729
FFSLSX
MOC183-261915-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1129 AM CST FRI MAR 26 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR ST. CHARLES COUNTY
UNTIL 115 PM CST...

MINOR FLOODING HAS BEEN REPORTED OVER PARTS OF ST. CHARLES COUNTY 
THE PAST TWO HOURS. AT 930 AM 3 INCHES OF WATER COVERED OFALLON ROAD 
NEAR CROOKED CREEK. 

RADAR INDICATES THE HEAVIEST RAINFALL HAS PAST. LIGHTER AMOUNTS 
HOWEVER WILL PERSIST AT LEAST UNTIL 2 PM.

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. AVOID BRIDGES...DIPS...
OR OTHER LOW LYING AREAS...AND NEVER DRIVE YOUR VEHICLE INTO AREAS
WHERE THE WATER COVERS THE ROADWAY. 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.

$$

DUMMER
000 
WGUS73 KLSX 261918
FFSLSX
MOC183-262117-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
117 PM CST FRI MAR 26 2004

...FLASH FLOOD WARNING FOR ST. CHARLES COUNTY HAS EXPIRED...

WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH 
PROMPTED THE FLASH FLOOD WARNING HAVE WEAKENED AND NO LONGER POSE A 
FLOODING THREAT.

ALTHOUGH THE HEAVY RAINS HAVE SUBSIDED...MOTORISTS SHOULD CONTINUE TO
USE CAUTION WHILE DRIVING THROUGH AREAS THAT HAVE EXPERIENCED 
FLOODING. CHILDREN SHOULD NOT BE ALLOWED TO PLAY NEAR RAIN-SWOLLEN 
STREAMS OR DRAINAGE DITCHES. STAY TUNED TO NOAA WEATHER RADIO FOR 
FURTHER UPDATES.

$$

DUMMER

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 7:33 AM CSTFlash Flood WarningLSXBoone4 hr
Mar 26, 8:19 AM CSTFlash Flood WarningLSXCallaway, Montgomery4 hr
Mar 26, 11:38 AM CSTFlash Flood WarningLSXBoone, Callaway, Montgomery4 hr

Nearby

Flash Flood Warnings in Missouri, 2004Every flash flood warning in 2004

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.