Alert archive / Missouri / Flash Flood Warnings in 2007

Flash Flood Warning 1, NWS St. Louis, MO

September 8, 2007Crawford County, Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 8, 2007, 12:49 PM CDT for Crawford 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 outline as issued.

The facts

Issued
Sep 8, 2007, 12:49 PM CDT (17:49 UTC)
Expired
Sep 8, 2007, 6:45 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text
Flood severity
None

County Crawford County, MO

The radar

The St Louis radar (KLSX), 94 km from the middle of the area, began a volume at 17:53 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, 5.8 hours before the alert went out and 331 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 2007-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 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 2007-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.19395878Sfc1 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
147 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 081753
FFWLSX
MOC055-082345-
/X.NEW.KLSX.FF.W.0001.070908T1749Z-070908T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1249 PM CDT SAT SEP 8 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 645 PM CDT

* AT 1243 PM CDT...THE PUBLIC REPORTED FLASH FLOODING AT MISSOURI    
  STATE HIGHWAY E OVER THE HUZZAH CREEK.

* HEAVY RAINFALL FROM LAST NIGHT AND ADDITIONAL RAINFALL THIS        
  AFTERNOON WILL CAUSE ADDITIONAL FLASH FLOODING TO OCCUR.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING ON THE 
HUZZAH CREEK...COURTOIS CREEK...SHOAL CREEK...DRY CREEK AND MERAMEC 
RIVER. IN PARTICULAR...STATE HIGHWAY E BRIDGE OVER THE HUZZAH CREEK 
IS IMPASSIBLE AT THIS TIME DUE TO HIGH WATER. 

FLOOD WATERS ARE MOVING DOWN STREAM AND WILL CAUSE SIGNIFICANT RISES 
ON THE MERAMEC RIVER.

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.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

LAT...LON 3774 9122 3808 9126 3819 9111 3817 9110
      3774 9111
TIME...MOT...LOC 1749Z 180DEG 0KT 3789 9131

$$

CVKING
1 follow-up statement
000 
WGUS73 KLSX 082255
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
555 PM CDT SAT SEP 8 2007

MOC055-082305-
/X.CAN.KLSX.FF.W.0001.000000T0000Z-070908T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD MO-
555 PM CDT SAT SEP 8 2007

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN CRAWFORD
COUNTY...

A CHECK WITH AREA LAW ENFORCEMENT INDICATES THAT FLOODING IS NO
LONGER A PROBLEM IN THE AREA.

LAT...LON 3774 9122 3808 9126 3819 9111 3817 9110
      3774 9111
TIME...MOT...LOC 2255Z 180DEG 0KT 3795 9119

$$

PEDIGO

Nearby

Flash Flood Warnings in Missouri, 2007Every flash flood warning in 2007

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.