Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 13, NWS St. Louis, MO

March 18, 2008Sainte Genevieve County, Saint Francois County, Missouri; Randolph County, Illinois

NWS St. Louis, MO issued this flash flood warning at Mar 18, 2008, 8:21 PM CDT for Sainte Genevieve County, Saint Francois County, 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 outline as issued.

The facts

Issued
Mar 18, 2008, 8:21 PM CDT (01:21 UTC)
Expired
Mar 19, 2008, 2:15 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Randolph County, IL, Saint Francois County, MO, Sainte Genevieve County, MO

The radar

The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 01:22 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, 1.4 hours before the alert went out and 280 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 2008-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2008-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
-50 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 190128
FFWLSX
ILC157-MOC186-187-190715-
/O.NEW.KLSX.FF.W.0013.080319T0121Z-080319T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
821 PM CDT TUE MAR 18 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI
  STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI
  RANDOLPH COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 215 AM CDT

* AT 817 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN CONTINUES TO FORM OVER SOUTHWEST MISSOURI AND
  PUSH INTO SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS.  ALTHOUGH 
  FLOODING IS BEING REPORTED ON MANY STREETS AND ROADS...THE HEAVY 
  RAINFALL OVER THE NEXT FEW HOURS WILL CAUSE FLOODING TO BECOME
  MORE WIDESPREAD AND SEVERE. 

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING TILDEN...STEELEVILLE...SPARTA...RED BUD...PERCY...
  EVANSVILLE...COULTERVILLE...CHESTER...BREMEN...BALDWIN...
  WEINGARTEN...STE. GENEVIEVE...ST. MARY...ROCKY RIDGE...PARK
  HILLS...LEADWOOD...FARMINGTON...DESLOGE...COFFMAN...BONNE
  TERRE...BLOOMSDALE AND BISMARCK.  

THIS WARNING ALSO INCLUDES...
INTERSTATE 55 IN MISSOURI FROM EXIT 141 TO EXIT 162.

IF YOU LIVE IN A FLOOD PRONE AREA BE CERTAIN THAT YOU CAREFULLY 
MONITOR WATER LEVELS OVERNIGHT.  PLAN NOW FOR A SAFE EESCAPE ROUTE 
IF EVACUATIONS BECOME NECESSARY.  IF FLOODING THREATENS...DO NOT 
WAIT...MOVE TO SAFETY AT ONCE.   

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

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

LAT...LON 3765 9065 3808 9064 3807 9061 3801 9062
      3800 9059 3804 9043 3812 9025 3809 9020
      3813 9006 3823 9002 3821 8959 3794 8961
      3781 8969 3790 8987 3783 9000 3764 9015
TIME...MOT...LOC 0121Z 180DEG 0KT 3773 9047

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 10:10 PM CDTFlash Flood WarningLSXIron, Madison, Reynolds, Sainte Genevieve, Saint Francois6 hr
Mar 18, 10:11 PM CDTRiver Flood WarningLSXFranklin, Warren5 days
Mar 18, 11:40 PM CDTRiver Flood WarningLSXSaint Charles7 days
Mar 19, 11:44 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis4 days
Mar 19, 12:46 PM CDTRiver Flood WarningLSXSaint Louis, City of Saint Louis5 days

Nearby

Flash Flood Warnings in Missouri, 2008Flash Flood Warnings in Illinois, 2008Every flash flood warning in 2008

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.