Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 17, NWS St. Louis, MO

May 13, 20027 counties in Missouri; Randolph County, Illinois

NWS St. Louis, MO issued this flash flood warning at May 13, 2002, 1:21 AM CDT for 7 counties in Missouri; Randolph County, Illinois. 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
May 13, 2002, 1:21 AM CDT (06:21 UTC)
Expired
May 13, 2002, 7:15 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Randolph County, IL, Crawford County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 06:21 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 00:00Z, 6.4 hours before the alert went out and 317 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 00:00Z on 2002-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2002-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897Sfc1 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
6 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
216 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 
WGUS53 KLSX 130621
FFWSTL
ILC157-MOC055-093-123-179-186-187-221-131215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
120 AM CDT MON MAY 13 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN EAST CENTRAL MISSOURI
  WASHINGTON COUNTY IN EAST CENTRAL MISSOURI
  IRON COUNTY IN SOUTHEAST MISSOURI
  MADISON COUNTY IN SOUTHEAST MISSOURI
  REYNOLDS COUNTY IN SOUTHEAST MISSOURI
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI
  STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI
  RANDOLPH COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 715 AM CDT

* BETWEEN 1 AND 115 AM...LAW ENFORCEMENT CONTINUED TO REPORT SERIOUS
  FLOODING OVER SOUTHEAST MISSOURI AND EXTREME SOUTHWEST ILLINOIS...
  ALTHOUGH WATER LEVELS IN SOME AREAS WERE BEGINNING TO RECEDE. 
  IN MADISON COUNTY...ONE WATER RESCUE WAS IN PROGRESS...AND SOME 
  EVACUATIONS WERE OCCURRING AROUND MARQUAND.  THE MISSOURI WATER
  PATROL WAS ALSO IN IRON COUNTY...ASSISTING IN RESCUE EFFORTS.  
  IN REYNOLDS COUNTY...HIGHWAY 21 AT LESTERVILLE WAS CLOSED DUE TO
  HIGH WATER.  IN ADDITION...ALL LOW WATER CROSSINGS IN THE AREA
  WERE EXPERIENCING FLOODING.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING THE CENTERVILLE...ELLINGTON...IRONTON...FREDERICKTOWN...
  STE GENEVIEVE....FARMINGTON...POTOSI...STEELVILLE...AND CHESTER
  AREAS.  THE GOOD NEWS IS THAT RAINFALL SHOULD BE TAPERING OFF 
  CONSIDERABLY BETWEEN 130 AND 230 AM...WHICH WILL ALLOW THE FLOOD
  WATERS TO RECEDE FURTHER.

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 7:02 PM CDTSevere Thunderstorm WarningLSX58 min
May 12, 7:34 PM CDTSevere Thunderstorm WarningLSX41 min
May 12, 7:40 PM CDTFlash Flood WarningLSXCrawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more6 hr
May 12, 8:08 PM CDTFlash Flood WarningLSXBoone, Callaway, Cole, Franklin, Gasconade, Jefferson and 8 more6 hr
May 12, 9:19 PM CDTFlash Flood WarningLSXBoone, Callaway, Cole, Franklin, Gasconade, Jefferson and 8 more5 hr

Nearby

Flash Flood Warnings in Missouri, 2002Flash Flood Warnings in Illinois, 2002Every flash flood warning in 2002

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.