Alert archive / Minnesota / Flash Flood Warnings in 2004

Flash Flood Warning 37, NWS La Crosse, WI

September 15, 2004Winona County, Minnesota

NWS La Crosse, WI issued this flash flood warning at Sep 15, 2004, 3:42 AM CDT for Winona County, Minnesota. It was in force for 2 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 15, 2004, 3:42 AM CDT (08:42 UTC)
Expired: Sep 15, 2004, 6:00 AM CDT
In force: 2 hr
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

County Winona County, MN

The radar

The La Crosse radar (KARX), 53 km from the middle of the area, began a volume at 08:45 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, 8.7 hours before the alert went out and 174 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 150843
FFWARX
MNC169-151100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
342 AM CDT WED SEP 15 2004

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

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

* UNTIL 600 AM CDT

* AT 341 AM 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. 
  THE WINONA COUNTY SHERIFF DEPARTMENT REPORTED MUDSLIDES ACROSS 
  HIGHWAY 61 IN THE MINNESOTA CITY AREA.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ALTURA...LEWISTON...
  STOCKTON...MINNESOTA CITY...GOODVIEW AND WINONA.

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. REMEMBER...TURN AROUND DO NOT
DROWN.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLOODING OF CREEKS AND
STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUD-SLIDES IN STEEP TERRAIN. PERSONS IN THE WARNED
AREA SHOULD BE PREPARED TO ACT QUICKLY TO AVOID THESE HAZARDS.

LAT...LON 4387 9205 4386 9166 4388 9135 4419 9205

$$

04

1 follow-up statement

000 
WGUS73 KARX 150950
FFSARX
MNC169-151100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
450 AM CDT WED SEP 15 2004

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR
WINONA COUNTY...

AT 448 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED THUNDERSTORMS
PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. LAW ENFORCEMENT 
OFFICIALS REPORTED HIGH WATER IN THE SUNNY VIEW ACRES SUBDIVISION IN 
GOODVIEW. ADDITIONAL RAINFALL AMOUNTS BETWEEN A QUARTER AND THREE 
QUARTERS OF AN INCH WILL BE POSSIBLE THROUGH 600 AM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ALTURA...LEWISTON... 
STOCKTON...MINNESOTA CITY...GOODVIEW AND WINONA.

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. REMEMBER...TURN AROUND DO NOT
DROWN.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLOODING OF CREEKS AND
STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUD-SLIDES IN STEEP TERRAIN. PERSONS IN THE WARNED
AREA SHOULD BE PREPARED TO ACT QUICKLY TO AVOID THESE HAZARDS.

LAT...LON 4387 9205 4386 9166 4388 9135 4419 9205

$$

04

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 14, 8:48 PM CDT	Flash Flood Warning	ARX	Mower, Olmsted	4 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, 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.