Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 49, NWS St. Louis, MO

June 6, 20084 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 6, 2008, 2:37 PM CDT for 4 counties in Missouri. It was in force for 4 hr. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 6, 2008, 2:37 PM CDT (19:37 UTC)
Expired: Jun 6, 2008, 6:30 PM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties City of Saint Louis, MO, Franklin County, MO, Jefferson County, MO, Saint Louis County, MO

What was reported inside it

Time	Report	Where	Remark
Jun 6, 2:54 PM CDT	FLASH FLOOD	St. Louis, MO	STREET FLOODING REPORTED IN FOREST PARK.
Jun 6, 2:56 PM CDT	FLASH FLOOD	Fenton, MO	3 FEET OF WATER REPORTED ON HWY 141 AT I 44.
Jun 6, 3:20 PM CDT	FLASH FLOOD	St. Louis, MO	1 FOOT OF WATER REPORTED AT THE KINSHIGHWAY EXIT OF I 64. 2 LANES BLOCKED.
Jun 6, 6:00 PM CDT	HEAVY RAIN 1.8	1 Sw Fenton, MO
Jun 6, 6:05 PM CDT	FLASH FLOOD	Valley Park, MO	HIGHWAY 141 CLOSED NEAR INTERSTATE 44

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.6 hours before the alert went out and 230 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 751 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 387 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 061938
FFWLSX
MOC071-099-189-510-062330-
/O.NEW.KLSX.FF.W.0049.080606T1937Z-080606T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
237 PM CDT FRI JUN 6 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI
  NORTHWESTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI

* UNTIL 630 PM CDT

* AT 234 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LINE OF SEVERE THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL       
  MOVING THROUGH THE ST. LOUIS METROPOLITAN AREA. FLASH FLOODING OF  
  LOW LYING AREAS CAN BE EXPECTED.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING WOODSON TERRACE...WILDWOOD...WEBSTER GROVES...WARSON
  WOODS...VALLEY PARK...UPLANDS PARK...UNIVERSITY CITY...TOWN AND
  COUNTRY...SUNSET HILLS...ST. LOUIS...ST. JOHN...ST. ANN...SPANISH
  LAKE...SHREWSBURY...RIVERVIEW...RICHMOND HEIGHTS...OVERLAND...
  OLIVETTE...OAKLAND...NORTHWOODS...NORMANDY...MURPHY...MEHLVILLE...
  MARYLAND HEIGHTS...MAPLEWOOD...MANCHESTER...LEMAY...LAKESHIRE...
  LADUE...KIRKWOOD...KINLOCH...JENNINGS...HOUSE SPRINGS...
  HILLSDALE...HIGH RIDGE...HAZELWOOD...GREENDALE...GLENDALE...
  FRONTENAC...FLORISSANT...FERGUSON...FENTON...EUREKA...ELLISVILLE...
  DITTMER...DES PERES...DELLWOOD...CREVE COEUR...CRESTWOOD...COOL
  VALLEY...CLAYTON...CLARKSON VALLEY...CHESTERFIELD...CEDAR HILL...
  BYRNES MILL...BRIDGETON...BRENTWOOD...BLACK JACK...BEVERLY HILLS...
  BERKELEY...BELLEFONTAINE NEIGHBORS...BEL-RIDGE...BALLWIN AND
  AFFTON.

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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 3851 9027 3824 9076 3859 9075 3869 9055
      3871 9054 3886 9027 3885 9025 3880 9018
TIME...MOT...LOC 1937Z 180DEG 0KT 3809 9143

$$

CVKING

2 follow-up statements

000 
WGUS73 KLSX 062121
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
419 PM CDT FRI JUN 6 2008

MOC071-099-189-510-062330-
/O.CON.KLSX.FF.W.0049.000000T0000Z-080606T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON MO-FRANKLIN MO-ST. LOUIS CITY MO-ST. LOUIS MO-
419 PM CDT FRI JUN 6 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR ST.
LOUIS...ST. LOUIS CITY...EASTERN FRANKLIN AND NORTHWESTERN JEFFERSON
COUNTIES...

AT 416 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE SEVERE THUNDERSTORMS THAT PRODUCED 1 TO LOCALLY 3 INCHES OF 
RAINFALL HAVE MOVED EAST OF THE WARNED AREA. RUNOFF FROM THIS 
EXCESSIVE RAINFALL WILL CONTINUE TO CAUSE FLASH FLOODING OF LOW 
LYING AREAS THROUGH THIS EVENING.

ADDITIONAL THUNDERSTORMS AND HEAVY RAINFALL ARE POSSIBLE THROUGHOUT 
THIS EVENING. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODSON
TERRACE...WILDWOOD...WEBSTER GROVES...WARSON WOODS...VALLEY PARK...
UPLANDS PARK...UNIVERSITY CITY...TOWN AND COUNTRY...SUNSET HILLS...
ST. LOUIS...ST. JOHN...ST. ANN...SPANISH LAKE...SHREWSBURY...
RIVERVIEW...RICHMOND HEIGHTS...OVERLAND...OLIVETTE...OAKLAND...
NORTHWOODS...NORMANDY...MURPHY...MEHLVILLE...MARYLAND HEIGHTS...
MAPLEWOOD...MANCHESTER...LEMAY...LAKESHIRE...LADUE...KIRKWOOD...
KINLOCH...JENNINGS...HOUSE SPRINGS...HILLSDALE...HIGH RIDGE...
HAZELWOOD...GREENDALE...GLENDALE...FRONTENAC...FLORISSANT...
FERGUSON...FENTON...EUREKA...ELLISVILLE...DITTMER...DES PERES...
DELLWOOD...CREVE COEUR...CRESTWOOD...COOL VALLEY...CLAYTON...CLARKSON
VALLEY...CHESTERFIELD...CEDAR HILL...BYRNES MILL...BRIDGETON...
BRENTWOOD...BLACK JACK...BEVERLY HILLS...BERKELEY...BELLEFONTAINE
NEIGHBORS...BEL-RIDGE...BALLWIN AND AFFTON.

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. 

LAT...LON 3851 9027 3824 9076 3859 9075 3869 9055
      3871 9054 3886 9027 3885 9025 3880 9018
TIME...MOT...LOC 2119Z 180DEG 0KT 3809 9143

$$

CVKING

000 
WGUS73 KLSX 062324
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
624 PM CDT FRI JUN 6 2008

MOC071-099-189-510-062334-
/O.EXP.KLSX.FF.W.0049.000000T0000Z-080606T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON MO-FRANKLIN MO-ST. LOUIS CITY MO-ST. LOUIS MO-
624 PM CDT FRI JUN 6 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM CDT FOR ST. LOUIS...
ST. LOUIS CITY...EASTERN FRANKLIN AND NORTHWESTERN JEFFERSON
COUNTIES...

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

MOTORISTS SHOULD USE CAUTION WHEN APPROACHING AREAS THAT EXPERIENCED 
HIGH WATER LEVELS AND HAVE PONDED WATER STILL ON ROADWAYS.

LAT...LON 3851 9027 3824 9076 3859 9075 3869 9055
      3871 9054 3886 9027 3885 9025 3880 9018
TIME...MOT...LOC 2324Z 180DEG 0KT 3809 9143

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 2:52 AM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion, Monroe, Ralls	38 min
Jun 6, 4:46 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Osage	23 min
Jun 6, 10:31 AM CDT	River Flood Warning	LSX	Franklin, Warren	18 days
Jun 6, 10:31 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	31 days
Jun 6, 1:15 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Jefferson, Washington	45 min
Jun 6, 1:47 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	43 min
Jun 6, 1:51 PM CDT	Tornado Warning	LSX	Crawford	54 min
Jun 6, 1:57 PM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Washington	8 hr
Jun 6, 2:21 PM CDT	Tornado Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	39 min
Jun 6, 2:30 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Jefferson, Washington	45 min
Jun 6, 2:41 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	24 min
Jun 6, 2:58 PM CDT	Flash Flood Warning	LSX	City of Saint Louis	4 hr
Jun 6, 3:12 PM CDT	Tornado Warning	LSX	Jefferson, Saint Louis	48 min
Jun 6, 3:52 PM CDT	Flash Flood Warning	LSX	Jefferson, Saint Louis	4 hr
Jun 6, 5:57 PM CDT	Tornado Warning	LSX	Crawford, Washington	48 min
Jun 6, 6:36 PM CDT	Tornado Warning	LSX	Washington	39 min

Nearby

Flash Flood Warnings in Missouri, 2008 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.