Flash Flood Warning 9, NWS St. Louis, MO

Issued

May 20, 2013, 9:39 PM CDT (02:39 UTC)

Expired

May 21, 2013, 3:30 AM CDT

In force

6 hr

Issued by

NWS St. Louis, MO

Area

Storm-based polygon

Flood severity

None

Counties Calhoun County, IL, Lincoln County, MO, Saint Charles County, MO

The St Louis radar (KLSX), 29 km from the middle of the area, began a volume at 02:43 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.

005 
WGUS53 KLSX 210239
FFWLSX
ILC013-MOC113-183-210830-
/O.NEW.KLSX.FF.W.0009.130521T0239Z-130521T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
939 PM CDT MON MAY 20 2013

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
  NORTHWESTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 330 AM CDT

* AT 937 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING ACROSS THE WARNED AREA. SEVERAL LOCATIONS ALONG 
  HIGHWAY C...EAST OF OLD MONROE HAD UP TO A FOOT OF WATER OVER
  THE ROADWAY. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE MOVING ACROSS THE 
  WARNED AREA. UP TO TWO INCHES OF RAIN HAS FALLEN SO FAR. ANOTHER
  ROUND OF STORMS WILL MOVE THROUGH IN THE NEXT COUPLE OF HOURS...
  WITH AN ADDITIONAL INCH OF RAINFALL POSSIBLE.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...OLD
  MONROE...WINFIELD AND BRUSSELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

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

&&

LAT...LON 3902 9057 3899 9057 3895 9052 3896 9050
      3896 9042 3887 9057 3889 9063 3888 9096
      3894 9096 3904 9059

$$

BYRD

474 
WGUS73 KLSX 210826 RRA
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
326 AM CDT TUE MAY 21 2013

ILC013-MOC113-183-210842-
/O.EXP.KLSX.FF.W.0009.000000T0000Z-130521T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALHOUN IL-LINCOLN MO-ST. CHARLES MO-
326 AM CDT TUE MAY 21 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN ST.
CHARLES...SOUTHEASTERN LINCOLN AND CALHOUN COUNTIES WILL BE ALLOWED
TO EXPIRE AT 330 AM CDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3902 9057 3899 9057 3895 9052 3896 9050
      3896 9042 3887 9057 3889 9063 3888 9096
      3894 9096 3904 9059

$$

PHILLIPSON

Flash Flood Warnings in Missouri, 2013Flash Flood Warnings in Illinois, 2013Every flash flood warning in 2013

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.