Flash Flood Warning 22, NWS La Crosse, WI

Issued

Sep 3, 2011, 2:53 AM CDT (07:53 UTC)

Expired

Sep 3, 2011, 6:22 AM CDT

In force

3 hr

Issued by

NWS La Crosse, WI

Area

Storm-based polygon

Flood severity

None

Counties Clayton County, IA, Grant County, WI

The La Crosse radar (KARX), 112 km from the middle of the area, began a volume at 07:55 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.

492 
WGUS53 KARX 030753
FFWARX
IAC043-WIC043-031400-
/O.NEW.KARX.FF.W.0022.110903T0753Z-110903T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
253 AM CDT SAT SEP 3 2011

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLAYTON COUNTY IN NORTHEAST IOWA...
  GRANT COUNTY IN SOUTHWEST WISCONSIN...

* UNTIL 900 AM CDT

* AT 252 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. DOPPLER RADAR ESTIMATED THAT 1 TO 3 INCHES OF RAIN    
  HAS FALLEN SO FAR WITH AN ADDITIONAL 1 TO 3 INCHES POSSIBLE OVER   
  THE NEXT FEW HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ELKADER...GUTTENBERG...LANCASTER...PLATTEVILLE...BLOOMINGTON...
  CASSVILLE...DICKEYVILLE...EDGEWOOD...FARMERSBURG...FENNIMORE...
  GARNAVILLO...MCGREGOR...STRAWBERRY POINT AND VOLGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4267 9089 4264 9090 4264 9161 4301 9160
      4303 9117 4299 9115 4299 9106 4304 9096
      4305 9042 4262 9042 4262 9071

$$

HALBACH

247 
WGUS73 KARX 030854
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
354 AM CDT SAT SEP 3 2011

IAC043-WIC043-031400-
/O.CON.KARX.FF.W.0022.000000T0000Z-110903T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-GRANT WI-
354 AM CDT SAT SEP 3 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR GRANT AND CLAYTON
COUNTIES UNTIL 900 AM CDT...

AT 350 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
DOPPLER RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAS FALLEN OVER 
THE PAST FEW HOURS.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING 
INCLUDE...ELKADER...GUTTENBERG...LANCASTER...PLATTEVILLE...
BLOOMINGTON...CASSVILLE...DICKEYVILLE...EDGEWOOD...FARMERSBURG...
FENIMORE...MCGREGOR... STRAWBERRY POINT AND VOLGA. SOME RIVERS AND 
STREAMS THAT WILL EXPERIENCE FLOODING INCLUDE THE TURKEY 
RIVER...VOLGA RIVER...COX CREEK...GRANT RIVER...AND RATTLESNAKE 
CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES  ARE POSSIBLE IN THE 
WARNED AREA.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4267 9089 4264 9090 4264 9161 4301 9160
      4303 9117 4299 9115 4299 9106 4304 9096
      4305 9042 4262 9042 4262 9071

$$

HALBACH

103 
WGUS73 KARX 031122
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
622 AM CDT SAT SEP 3 2011

IAC043-WIC043-031137-
/O.CAN.KARX.FF.W.0022.000000T0000Z-110903T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-GRANT WI-
622 AM CDT SAT SEP 3 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR GRANT AND CLAYTON
COUNTIES IS CANCELLED...

HEAVY RAINFALL HAS EXITED EAST OF THE AREA. CALLS TO LAW ENFORCEMENT 
INDICATED THERE WAS NO FLOODING OBSERVED. SCATTERED SHOWERS AND 
THUNDERSTORMS WILL BE SEEN ACROSS THE AREA TODAY. HOWEVER... 
WIDESPREAD HEAVY RAINFALL IS NOT EXPECTED. IF FLOODING HAS BEEN 
OBSERVED IN YOUR AREA...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

LAT...LON 4267 9089 4264 9090 4264 9161 4301 9160
      4303 9117 4299 9115 4299 9106 4304 9096
      4305 9042 4262 9042 4262 9071

$$

DAS

Flash Flood Warnings in Iowa, 2011Flash Flood Warnings in Wisconsin, 2011Every flash flood warning in 2011

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.