Alert archive / Minnesota / Flash Flood Warnings in 2004

Flash Flood Warning 34, NWS La Crosse, WI

September 14, 2004Mower County, Olmsted County, Minnesota

NWS La Crosse, WI issued this flash flood warning at Sep 14, 2004, 8:48 PM CDT for Mower County, Olmsted County, Minnesota. 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: Sep 14, 2004, 8:48 PM CDT (01:48 UTC)
Expired: Sep 15, 2004, 1:15 AM CDT
In force: 4 hr
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

Counties Mower County, MN, Olmsted County, MN

The radar

The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 01:50 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 00:00Z, 1.8 hours before the alert went out and 139 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: 52 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 758 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 106 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 150149
FFWARX
MNC099-109-150615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
848 PM CDT TUE SEP 14 2004

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  OLMSTED COUNTY IN SOUTHEAST MINNESOTA
  MOWER COUNTY IN SOUTHEAST MINNESOTA

* UNTIL 115 AM CDT

* AT 848 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS MUCH OF THE WARNED  
  AREA. ESTIMATES FROM RADAR INDICATED THAT NEARLY 3 INCHES OF RAIN  
  HAS FALLEN DURING THE PAST 3 HOURS OVER THE WARNED AREA. THESE     
  STORMS WERE MOVING NORTH AT 25 MPH.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ADAMS...AUSTIN...
  BROWNSDALE...BYRON...DOVER...EYOTA AND GRAND MEADOW.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4354 9306 4353 9250 4385 9247 4388 9213
      4407 9212 4418 9265 4385 9269 4383 9305

$$

RABERDING

2 follow-up statements

000 
WGUS73 KARX 150305
FFSARX
MNC099-109-150615-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1001 PM CDT TUE SEP 14 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT FOR MOWER
AND OLMSTED COUNTIES...

AT 1001 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED 
THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. LAW 
ENFORCEMENT OFFICIALS REPORT MANY ROADS UNDER WATER ACROSS THE AREA 
AS 2 TO 3 INCHES OF RAIN HAS FALLEN ACROSS THE AREA THIS EVENING. 
MODERATE RAIN IS EXPECTED TO CONTINUE THE NEXT SEVERAL HOURS 
AGGRAVATING THE FLOODING PROBLEM.

SOME LOCATIONS THAT MAY BE AFFECTED 
INCLUDE...ADAMS...AUSTIN...BROWNSDALE...BYRON...DOVER...EYOTA AND 
GRAND MEADOW.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4354 9306 4353 9250 4385 9247 4388 9213
      4407 9212 4418 9265 4385 9269 4383 9305

$$

000 
WGUS73 KARX 150434
FFSARX
MNC099-109-150615-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1132 PM CDT TUE SEP 14 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT FOR MOWER
AND OLMSTED COUNTIES...

AT 1132 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED SHOWERS AND 
THUNDERSTORMS ACROSS THE AREA. ESTIMATES FROM RADAR INDICATED THAT 3 
TO 4 INCHES OF RAIN HAS FALLEN DURING THE PAST 4 HOURS OVER THE 
WARNED AREA. THE STORMS PRODUCING THE VERY HEAVY RAINFALL WERE 
MOVING NORTHEAST AT 20 MPH. LAW ENFORCEMENT OFFICIALS REPORT SEVERAL 
ROADS UNDER WATER. ADDITIONAL RAINFALL AMOUNTS BETWEEN ONE HALF AND 
ONE INCH OVER THE NEXT SEVERAL HOURS WILL ONLY AGGRAVATE THE FLOODING 
PROBLEMS.

SOME LOCATIONS THAT MAY BE AFFECTED 
INCLUDE...ADAMS...AUSTIN...BROWNSDALE...BYRON...DOVER...EYOTA AND 
GRAND MEADOW.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4354 9306 4353 9250 4385 9247 4388 9213
      4407 9212 4418 9265 4385 9269 4383 9305

$$

RABERDING

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 8:21 PM CDT	Flash Flood Warning	ARX	Dodge	5 hr
Sep 15, 1:10 AM CDT	Flash Flood Warning	ARX	Dodge, Mower, Olmsted	5 hr
Sep 15, 2:58 AM CDT	Flash Flood Warning	ARX	Fillmore	3 hr
Sep 15, 3:42 AM CDT	Flash Flood Warning	ARX	Winona	2 hr
Sep 15, 6:09 AM CDT	Flash Flood Warning	ARX	Dodge, Fillmore, Mower, Winona	111 min
Sep 15, 7:58 AM CDT	Flash Flood Warning	ARX	Dodge, Fillmore, Mower, Winona	3 hr

Nearby

Flash Flood Warnings in Minnesota, 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.