Alert archive / Iowa / Flash Flood Warnings in 2004

Flash Flood Warning 18, NWS La Crosse, WI

May 30, 2004Clayton County, Iowa

NWS La Crosse, WI issued this flash flood warning at May 30, 2004, 3:36 PM CDT for Clayton County, Iowa. It was in force for 4 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: May 30, 2004, 3:36 PM CDT (20:36 UTC)
Expired: May 30, 2004, 7:30 PM CDT
In force: 4 hr
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

County Clayton County, IA

The radar

The La Crosse radar (KARX), 113 km from the middle of the area, began a volume at 20:35 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.6 hours before the alert went out and 286 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 370 m²/s²
0-3 km storm-relative helicity: 382 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 KARX 302039
FFWARX
IAC043-310030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
336 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLAYTON COUNTY IN NORTHEAST IOWA

* UNTIL 730 PM CDT

* AT 336 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN EXTENDING FROM 9 MILES WEST
  OF MANCHESTER TO 7 MILES EAST OF VINTON. ESTIMATES FROM RADAR
  INDICATED THAT NEARLY 1 INCH OF RAIN HAS FALLEN DURING THE PAST    
  HOUR JUST SOUTH OF THE WARNED AREA. THE STORMS PRODUCING THE VERY  
  HEAVY RAINFALL WERE MOVING NORTHEAST AT 30 MPH.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ELKADER...
  FARMERSBURG...GARNAVILLO...VOLGA...J WOOD CAMPGROUND...COUNTY ROADS
  B 56 AND X 16 AND HIGHWAY 13 AND COUNTY C 24.

THE GROUNDS REMAIN SATURATED FROM RECENT RAINS...AND ANY ADDITIONAL 
HEAVY RAIN WILL CREATE MORE FLOODING PROBLEMS. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED 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 FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4269 9159 4267 9113 4301 9118 4303 9157

$$

RIECK

4 follow-up statements

000 
WGUS73 KARX 302150
FFSARX
IAC043-310030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
450 PM CDT SUN MAY 30 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
CLAYTON COUNTY...

BRIEF HEAVY RAINS HAVE FALLEN ACROSS CLAYTON COUNTY...HOWEVER NO 
FLASH FLOOD PROBLEMS HAVE BEEN REPORTED YET. THE TURKEY RIVER...AND 
ITS TRIBUTARIES...ARE ALREADY EXPERIENCING SOME FLOODING DIFFICULTY. 
THUNDERSTORMS WITH HEAVY RAINFALL WILL PERSIST...CONTINUING THE 
THREAT FOR FLASH FLOODING. THE STORMS PRODUCING THE VERY HEAVY 
RAINFALL WERE MOVING NORTHEAST AT 30 MPH.

SOME LOCATIONS THAT MAY BE AFFECTED 
INCLUDE...ELKADER...FARMERSBURG...GARNAVILLO AND VOLGA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED 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 FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4269 9159 4267 9113 4301 9118 4303 9157

$$

SCHRECK

000 
WGUS73 KARX 302211
FFSARX
IAC043-310030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
510 PM CDT SUN MAY 30 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
CLAYTON COUNTY...

THE ST OLAF FIRE DEPARTMENT REPORTED THAT THE HOWARD AND ROBERTS 
CREEKS AROUND ST OLAF ARE OUT OF THEIR BANKS AND FLOODING NEARBY 
FIELDS. NO ROADS WERE REPORTEDLY AFFECTED. THE STORMS PRODUCING THE 
VERY HEAVY RAINFALL WERE MOVING NORTHEAST AT 30 MPH.

SOME OTHER LOCATIONS THAT MAY BE AFFECTED BY FLASH FLOODING 
INCLUDE...ELKADER...FARMERSBURG...GARNAVILLO AND VOLGA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED 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 FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4269 9159 4267 9113 4301 9118 4303 9157

$$

SCHRECK

000 
WGUS73 KARX 302227
FFSARX
IAC043-310030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
527 PM CDT SUN MAY 30 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
CLAYTON COUNTY...

AN OBSERVER IN EDGEWOOD REPORTED 0.85 INCH OF RAINFALL TODAY...AND 
MANY OF THE STREAMS AND CREEKS IN THE AREA...INCLUDING RABBIT 
CREEK...HONEY CREEK...AND BEAR CREEKS ARE OUT OF THEIR BANKS. 
THE STORMS PRODUCING THE VERY HEAVY RAINFALL WERE MOVING NORTHEAST 
AT 30 MPH.

SOME OTHER LOCATIONS THAT MAY BE AFFECTED BY THE HEAVY RAIN 
INCLUDE...MILLVILLE...ELKADER...FARMERSBURG...GARNAVILLO AND VOLGA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED 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 FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4269 9159 4267 9113 4301 9118 4303 9157

$$

SCHRECK

000 
WGUS73 KARX 310001
FFSARX
IAC043-310030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
700 PM CDT SUN MAY 30 2004

...THE FLASH FLOOD WARNING FOR CLAYTON COUNTY HAS BEEN CANCELLED...

THE RAINFALL HAS MOVED OUT OF CLAYTON COUNTY...AND REPORTS FROM LAW 
ENFORCEMENT INDICATE THAT THE FLASH FLOODING PROBLEMS HAVE ENDED.  
THE SMALL STREAMS WHICH WERE OUT OF THEIR BANKS EARLIER HAVE NOW 
RECEDED.  THEREFORE...THE FLASH FLOOD WARNING FOR CLAYTON COUNTY 
HAS BEEN CANCELLED.  

ONE LAST LINE OF SHOWERS AND THUNDERSTORMS WILL MOVE THROUGH THE 
AREA THROUGH 815 PM...BUT THE RAIN AMOUNTS ARE NOT EXPECTED TO 
RESULT IN ANY ADDITIONAL FLOODING PROBLEMS. 

HIGH WATER WILL CONTINUE HOWEVER ALONG THE LARGER RIVERS...INCLUDING 
THE VOLGA AND TURKEY RIVERS.  SEE OTHER FLOOD STATEMENTS /MKEFLSLSE/ 
/UGUS83/ FOR INFORMATION ON THAT. 


LAT...LON 4269 9159 4267 9113 4301 9118 4303 9157

$$

MW

Nearby

Flash Flood Warnings in Iowa, 2004 Every flash flood warning in 2004

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.