Flash Flood Warning 6, NWS La Crosse, WI

Issued

Sep 5, 2012, 1:59 AM CDT (06:59 UTC)

Expired

Sep 5, 2012, 5:17 AM CDT

In force

3 hr

Issued by

NWS La Crosse, WI

Area

Storm-based polygon

Flood severity

None

Counties Allamakee County, IA, Clayton County, IA, Crawford County, WI, Grant County, WI

The La Crosse radar (KARX), 89 km from the middle of the area, began a volume at 07:01 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.

977 
WGUS53 KARX 050659
FFWARX
IAC005-043-WIC023-043-051300-
/O.NEW.KARX.FF.W.0006.120905T0659Z-120905T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
159 AM CDT WED SEP 5 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL CLAYTON COUNTY IN NORTHEAST IOWA...
  SOUTHEASTERN ALLAMAKEE COUNTY IN NORTHEAST IOWA...
  SOUTHWESTERN CRAWFORD COUNTY IN SOUTHWEST WISCONSIN...
  WEST CENTRAL GRANT COUNTY IN SOUTHWEST WISCONSIN...

* UNTIL 800 AM CDT

* AT 156 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR 
ESTIMATES THAT 3 TO 4 INCHES OF RAIN HAS ALREADY FALLEN ACROSS THE 
AREA...WITH AN ADDITIONAL INCH POSSIBLE. 

THIS WARNING EXTENDS THE PREVIOUS WARNING THAT WAS IN EFFECT UNTIL 2 
AM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PRAIRIE DU CHIEN...BLOOMINGTON...HARPERS FERRY...MARQUETTE AND   
MCGREGOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

LAT...LON 4295 9115 4301 9123 4308 9129 4328 9141
      4328 9110 4288 9071 4276 9084

$$

RIECK

030 
WGUS73 KARX 051017
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
517 AM CDT WED SEP 5 2012

IAC005-043-WIC023-043-051031-
/O.CAN.KARX.FF.W.0006.000000T0000Z-120905T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLAMAKEE IA-CLAYTON IA-CRAWFORD WI-GRANT WI-
517 AM CDT WED SEP 5 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WEST CENTRAL
GRANT...SOUTHWESTERN CRAWFORD...NORTH CENTRAL CLAYTON AND
SOUTHEASTERN ALLAMAKEE COUNTIES IS CANCELLED...

THUNDERSTROMS HAVE MOVED OUT OF THE AREA AND NO REPORTS OF FLASH 
FLOODING HAVE BEEN RECEIVED.  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 4295 9115 4301 9123 4308 9129 4328 9141
      4328 9110 4288 9071 4276 9084

$$

HALBACH

Flash Flood Warnings in Wisconsin, 2012Flash Flood Warnings in Iowa, 2012Every flash flood warning in 2012

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.