Alert archive / Missouri / Flash Flood Warnings in 2003

Flash Flood Warning 20, NWS St. Louis, MO

June 25, 2003Callaway County, Montgomery County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 25, 2003, 10:04 PM CDT for Callaway County, Montgomery County, Missouri. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 25, 2003, 10:04 PM CDT (03:04 UTC)
Expired
Jun 26, 2003, 4:00 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Callaway County, MO, Montgomery County, MO

The radar

The St Louis radar (KLSX), 90 km from the middle of the area, began a volume at 03:05 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

Springfield, MO (KSGF), launched 00:00Z, 3.1 hours before the alert went out and 288 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, Springfield, MO at 00:00Z on 2003-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2242 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, Springfield, MO at 00:00Z on 2003-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
2242 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1157 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
130 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 260306
FFWLSX
MOC027-139-260900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1004 PM CDT WED JUN 25 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALLAWAY COUNTY IN CENTRAL MISSOURI
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 400 AM CDT

* AT 1004 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED           
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN MOVING EAST ACROSS         
  CALLAWAY AND MONTGOMERY COUNTY. RADAR ESTIMATES THAT OVER 3 INCHES 
  OF RAINFALL HAS OCCURRED IN THESE COUNTIES ALREADY THIS EVENING.    
  THE ADDITIONAL RAINFALL FROM THE THUNDERSTORMS WILL LIKELY CAUSE   
  FLASH FLOODING TO OCCUR. 

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLASH FLOODING IS OBSERVED. MOVE
TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT
TO FLOODING WHEN WATER BEGINS RISING.

$$

CVKING
1 follow-up statement
000 
WGUS73 KLSX 260902
FFSLSX
MOC027-139-260915-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
400 AM CDT THU JUN 26 2003

...FLASH FLOOD WARNING FOR CALLAWAY AND MONTGOMERY COUNTIES HAS
EXPIRED...

WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS AND 
HEAVY RAIN WHICH PROMPTED THE FLASH FLOOD WARNING HAVE ENDED...AND 
NO ADDITIONAL HEAVY RAIN IS EXPECTED.  A CHECK WITH THE CALLOWAY AND 
MONTGOMERY COUNTY SHERIFFS DEPARTMENTS INDICATED THAT NO ADDITIONAL 
FLOODING HAD BEEN REPORTED SINCE AROUND MIDNIGHT.  

ALTHOUGH THE HEAVY RAINS HAVE SUBSIDED...MOTORISTS SHOULD CONTINUE TO
USE CAUTION WHILE DRIVING THROUGH AREAS THAT HAVE EXPERIENCED
FLOODING. ROADS AND BRIDGES MAY HAVE BEEN DAMAGED BY RAPIDLY FLOWING
FLOOD WATERS.

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:18 PM CDTFlash Flood WarningLSXAudrain, Pike, Ralls6 hr
Jun 25, 8:35 PM CDTFlash Flood WarningLSXLincoln6 hr
Jun 25, 9:18 PM CDTFlash Flood WarningLSXBoone6 hr
Jun 25, 10:25 PM CDTFlash Flood WarningLSXSaint Charles, Saint Louis, City of Saint Louis6 hr
Jun 25, 11:05 PM CDTFlash Flood WarningLSXFranklin, Gasconade, Warren6 hr
Jun 26, 1:13 AM CDTFlash Flood WarningLSXJefferson6 hr
Jun 26, 2:14 AM CDTFlash Flood WarningLSXPike4 hr
Jun 26, 2:29 AM CDTFlash Flood WarningLSXLincoln4 hr
Jun 26, 4:14 AM CDTFlash Flood WarningLSXSaint Charles, Saint Louis, City of Saint Louis3 hr

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; radar from the NEXRAD Level II archive.