Alert archive / Missouri / Flash Flood Warnings in 2007

Flash Flood Warning 16, NWS St. Louis, MO

May 10, 2007Madison County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 10, 2007, 7:52 PM CDT for Madison County, Missouri. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 10, 2007, 7:52 PM CDT (00:52 UTC)
Expired
May 10, 2007, 11:45 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Madison County, MO

The radar

The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 00:55 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.

What was reported inside it

TimeReportWhereRemark
May 10, 9:00 PM CDTHEAVY RAIN 2.53 Nw Buckhorn, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.9 hours before the alert went out and 297 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, Little Rock, AR at 00:00Z on 2007-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 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, Little Rock, AR at 00:00Z on 2007-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
173 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1585 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-13 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 110055
FFWLSX
MOC123-110445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
752 PM CDT THU MAY 10 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MADISON COUNTY IN SOUTHEAST MISSOURI

* UNTIL 1145 PM CDT

* AT 750 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE SOUTHERN PORTION OF 
  MADISON COUNTY.  RADAR ESTIMATES AROUND 3 INCHES OF RAIN HAS 
  FALLEN BETWEEN SACO AND BUCKHORN SINCE 630 PM.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE 
  AFFECTING SOUTHERN PORTIONS OF MADISON COUNTY INCLUDING THE SACO 
  AND BUCKHORN VICINITY. 

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES OF RAIN ARE 
POSSIBLE IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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.

DO NOT 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. MOVE TO HIGHER GROUND.

LAT...LON 3732 9057 3732 9017 3763 9016 3763 9052

$$

GLASS
2 follow-up statements
000 
WGUS73 KLSX 110152
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
850 PM CDT THU MAY 10 2007

MOC123-110445-
MADISON MO-
850 PM CDT THU MAY 10 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR
MADISON COUNTY...

AT 850 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS WITH HEAVY RAIN OVER MADISON COUNTY.  RADAR 
RAINFALL ESTIMATES SUGGEST THAT 2 TO 4 INCHES OF RAIN HAS FALLEN 
OVER MUCH OF THE COUNTY THIS EVENING...WITH SEVERAL MORE INCHES 
POSSIBLE BY THE TIME THE HEAVIER RAIN TAPERS OFF BY AROUND 10 PM.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JUNCTION 
CITY...FREDERICKTOWN...SACO...BUCKHORN...AND MARQUAND.

THIS IS A SERIOUS FLASH FLOOD SITUATION...ESPECIALLY IN SOUTHERN 
PARTS OF THE COUNTY...SO DO NOT TAKE THIS DANGER LIGHTLY. BE 
ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF YOU LIVE IN A FLOOD PRONE AREA...OR IF FLASH 
FLOODING IS OBSERVED...MOVE UP TO HIGHER GROUND IMMEDIATELY TO 
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN 
WATER BEGINS RISING. 

WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN 
AROUND...DONT DROWN. 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.

LAT...LON 3732 9057 3732 9017 3763 9016 3763 9052

$$

TRUETT
000 
WGUS73 KLSX 110449
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1146 PM CDT THU MAY 10 2007

MOC123-110456-
MADISON MO-
1146 PM CDT THU MAY 10 2007

...THE FLASH FLOOD WARNING HAS EXPIRED FOR MADISON COUNTY...

THE STORMS WHICH PRODUCED THE HEAVY RAINS EARLIER HAVE WEAKENED AND
MOVED OUT OF THE COUNTY.

MOTORISTS SHOULD USE CONTINUE TO USE CAUTION OVERNIGHT...ESPECIALLY 
WHEN APPROACHING LOW LYING AREAS AND THOSE LOCATIONS THAT ARE KNOWN 
TO FLOOD DURING TIMES OF HEAVY RAIN.  ROADS...ESPECIALLY THOSE IN 
RURAL AREAAS...MAY HAVE BEEN DAMAGED BY THE HEAVY RAINS OF EARLIER 
THIS EVENING.  

IN ADDITION...LOW WATER CROSSINGS SHOULD BE AVOIDED...AS DARKNESS 
OFTEN MAKES IT DIFFICULT TO DETERMINE IF WATER IS COVERING THE ROAD. 
IF YOU DO COME UPON A LOW WATER CROSSING...TURN AROUND AND FIND 
ANOTHER ROUTE TO YOUR DESTINATION.  

LAT...LON 3732 9057 3732 9017 3763 9016 3763 9052

$$

TRUETT

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.