Flash Flood Warning 13, NWS St. Louis, MO

Issued

May 15, 2009, 11:00 AM CDT (16:00 UTC)

Expired

May 15, 2009, 5:00 PM CDT

In force

6 hr

Issued by

NWS St. Louis, MO

Area

Storm-based polygon

Flood severity

None

County Knox County, MO

The St Louis radar (KLSX), 201 km from the middle of the area, began a volume at 16:03 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.

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

000 
WGUS53 KLSX 151600
FFWLSX
MOC103-152200-
/O.NEW.KLSX.FF.W.0013.090515T1600Z-090515T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1100 AM CDT FRI MAY 15 2009

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KNOX COUNTY IN NORTHEAST MISSOURI

* UNTIL 500 PM CDT FRIDAY

* AT 1054 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. DOPPLER RADAR ESTIMATES RAINFALL IN EXCESS OF ONE AND 
  ONE HALF INCHES OVER NORTHWESTERN PORTIONS OF THE                  
  COUNTY...AND MORE THUNDERSTORMS WILL CONTINUE TO MOVE OVER THE     
  AREA THROUGH THE LATE MORNING INTO THE AFTERNOON.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EDINA...COLONY...GREENSBURG...KNOX CITY AND PLEVNA.

THIS FLASH FLOOD WARNING IS A CORRECTION FOR AREAL COVERAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN
AROUND...DONT DROWN

&&

LAT...LON 4030 9195 4022 9196 4013 9195 3995 9196
      3995 9229 3995 9235 4030 9235

$$

CARNEY

000 
WGUS73 KLSX 151948
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
248 PM CDT FRI MAY 15 2009

MOC103-152200-
/O.CON.KLSX.FF.W.0013.000000T0000Z-090515T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX MO-
248 PM CDT FRI MAY 15 2009

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR KNOX COUNTY UNTIL 500 PM
CDT...

AT 232 PM CDT...DOPPLER RADAR CONTINUES TO INDICATE LIGHT TO 
MODERATE RAINFALL ACROSS THE WARNED AREA...WITH MORE RAINFALL 
EXPECTED.  RADAR ESTIMATES OF TWO TO FOUR INCHES ARE COMMON ACROSS 
KNOX COUNTY.

KNOX COUNTY SHERIFFS OFFICE REPORTED WATER OVER THE ROAD ON ROUTE V 
ONE MILE NORTH OF COUNTY ROUTE AA.

SLOW MOVING THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL IN THE
WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
INCLUDE...EDINA...COLONY...KNOX CITY AND PLEVNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT OR IN A VEHICLE.

&&

LAT...LON 4030 9195 4022 9196 4013 9195 3995 9196
      3995 9229 3995 9235 4030 9235

$$

FUCHS

Flash Flood Warnings in Missouri, 2009Every flash flood warning in 2009

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.