Alert archive / Minnesota / Flash Flood Warnings in 2012

Flash Flood Warning 1, NWS La Crosse, WI

May 2, 2012Wabasha County, Minnesota

NWS La Crosse, WI issued this flash flood warning at May 2, 2012, 8:51 PM CDT for Wabasha County, Minnesota. It was in force for 6 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: May 2, 2012, 8:51 PM CDT (01:51 UTC)
Expired: May 3, 2012, 3:00 AM CDT
In force: 6 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

County Wabasha County, MN

The radar

The La Crosse radar (KARX), 98 km from the middle of the area, began a volume at 01:53 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.

What was reported inside it

Time	Report	Where	Remark
May 2, 8:55 PM CDT	FLASH FLOOD	1 N Oak Center, MN	WATER 8 TO 9 INCHES DEEP OVER HWY 16
May 2, 8:57 PM CDT	FLASH FLOOD	5 S Lake City, MN	4 TO 5 FT DITCHES FULL
May 2, 9:14 PM CDT	HEAVY RAIN 1.5	4 Wnw Wabasha, MN
May 2, 9:53 PM CDT	FLASH FLOOD	2 Se Lake City, MN	MUDSLIDES REPORTED ON HWY 61
May 2, 9:53 PM CDT	FLASH FLOOD	3 Sw Lake City, MN	WATER OVER COUNTY RD 15 AT HWY 63

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 126 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: 84 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1937 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

284 
WGUS53 KARX 030151
FFWARX
MNC157-030800-
/O.NEW.KARX.FF.W.0001.120503T0151Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
851 PM CDT WED MAY 2 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WABASHA COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 300 AM CDT THURSDAY

* AT 849 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED           
  AREA. RADAR HAS ESTIMATED 2 TO 3 INCHES OF RAIN HAS                
  FALLEN WITH ANOTHER 1 TO 3 INCHES OF RAINFALL EXPECTED. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE
  CITY...WABASHA...KELLOGG AND MAZEPPA.

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.

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 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

6 follow-up statements

616 
WGUS73 KARX 030206
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
906 PM CDT WED MAY 2 2012

MNC157-030800-
/O.CON.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
906 PM CDT WED MAY 2 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WABASHA COUNTY UNTIL 300
AM CDT...

AT 901 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR 
ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAS FALLEN. AN ADDITIONAL 1 TO 
3 INCHES OF RAINFALL IS EXPECTED.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE
CITY...WABASHA...KELLOGG AND MAZEPPA.

STORM SPOTTERS REPORTED WATER 8 TO 9 INCHES DEEP OVER HIGHWAY 16...1 
MILE NORTH OF OAK CENTER AT 855 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

427 
WGUS73 KARX 030304
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1004 PM CDT WED MAY 2 2012

MNC157-030800-
/O.CON.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
1004 PM CDT WED MAY 2 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WABASHA COUNTY UNTIL 300
AM CDT...

AT 957 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS PRODUCED VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAS FALLEN ACROSS 
NORTHERN WABASHA COUNTY. LAW ENFORCEMENT HAS REPORTED MUDSLIDES AND 
WATER OVER ROADWAYS FROM THIS RAINFALL. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE
CITY...WABASHA...KELLOGG AND MAZEPPA.

LAW ENFORCEMENT REPORTED MUDSLIDES ALONG HIGHWAY 61...2 MILES 
SOUTHEAST OF LAKE CITY AND WATER OVER COUNTY ROAD 15 AT HIGHWAY 63. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS 
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS 
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. BE ALERT TO 
POSSIBLE MUDSLIDES IN STEEP TERRAIN. 

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 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

456 
WGUS73 KARX 030422
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1122 PM CDT WED MAY 2 2012

MNC157-030800-
/O.CON.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
1122 PM CDT WED MAY 2 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WABASHA COUNTY UNTIL 300
AM CDT...

AT 1114 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS PRODUCED HEAVY RAINFALL ACROSS NORTHERN WABASHA 
COUNTY. RADAR ESTIMATES 2 TO 3 INCHES OF RAIN HAS FALLEN. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE 
CITY AND OAK CENTER.

LOCAL LAW ENFORCEMENT REPORTED A ROAD WASHED OUT IN OAK CENTER. IN 
ADDITION...MUDSLIDES HAVE BEEN REPORTED ALONG HIGHWAY 61...2 MILES 
SOUTHEAST OF LAKE CITY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

390 
WGUS73 KARX 030726
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
226 AM CDT THU MAY 3 2012

MNC157-030800-
/O.CON.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
226 AM CDT THU MAY 3 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WABASHA COUNTY UNTIL 300
AM CDT...

AT 218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ESTIMATED 2 TO 3 INCHES OF RAIN FELL ACROSS NORTHERN WABASHA COUNTY 
EARLIER TONIGHT.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE
CITY...WABASHA...KELLOGG AND MAZEPPA.

LOCAL LAW ENFORCEMENT REPORTED THAT COUNTY ROAD 68 WAS CLOSED FROM 
HIGHWAY 60 TO COUNTY ROAD 3. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. BE ALERT TO POSSIBLE WASHED OUT ROADWAYS. 

&&

LAT...LON 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

431 
WGUS73 KARX 030727 CCA
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
227 AM CDT THU MAY 3 2012

MNC157-030800-
/O.CON.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
227 AM CDT THU MAY 3 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WABASHA COUNTY UNTIL 300
AM CDT...

AT 218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED 2 
TO 3 INCHES OF RAIN FELL ACROSS NORTHERN WABASHA COUNTY EARLIER 
TONIGHT.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE
CITY...WABASHA...KELLOGG AND MAZEPPA.

LOCAL LAW ENFORCEMENT REPORTED THAT COUNTY ROAD 68 WAS CLOSED FROM 
HIGHWAY 60 TO COUNTY ROAD 3. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. BE ALERT TO POSSIBLE WASHED OUT ROADWAYS. 

&&

LAT...LON 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

881 
WGUS73 KARX 030755
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
255 AM CDT THU MAY 3 2012

MNC157-030810-
/O.EXP.KARX.FF.W.0001.000000T0000Z-120503T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WABASHA MN-
255 AM CDT THU MAY 3 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WABASHA COUNTY WILL
BE ALLOWED TO EXPIRE AT 300 AM CDT...

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 4437 9244 4446 9243 4446 9224 4444 9221
      4443 9213 4437 9197 4432 9192 4429 9192
      4427 9189 4423 9189 4421 9188 4421 9255
      4436 9256

$$

WETENKAMP

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 7:29 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha, Winona	38 min
May 2, 8:10 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha	65 min
May 2, 8:48 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha	72 min
May 2, 9:13 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha	17 min
May 2, 9:19 PM CDT	Severe Thunderstorm Warning	ARX	Wabasha, Winona	56 min
May 2, 9:33 PM CDT	Tornado Warning	ARX	Wabasha	27 min
May 3, 6:43 AM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Houston, Winona	47 min

Nearby

Flash Flood Warnings in Minnesota, 2012 Every flash flood warning in 2012

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; radar from the NEXRAD Level II archive.