Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 1, NWS La Crosse, WI

April 11, 20016 counties in Minnesota; Buffalo County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at Apr 11, 2001, 7:38 AM CDT for 6 counties in Minnesota; Buffalo County, Wisconsin. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 11, 2001, 7:38 AM CDT (12:38 UTC)
Expired: Apr 11, 2001, 10:30 AM CDT
In force: 3 hr
Issued by: NWS La Crosse, WI
Area: Whole counties

Counties Dodge County, MN, Fillmore County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI

The radar

The La Crosse radar (KARX), 88 km from the middle of the area, began a volume at 12:40 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 12:00Z, 0.6 hours before the alert went out and 142 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: 5 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 454 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 130 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 111238
FFWLSE
MNC039-045-099-109-157-169-WIC011-111530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
738 AM CDT WED APR 11 2001

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MOWER COUNTY IN SOUTHEAST MINNESOTA
  DODGE COUNTY IN SOUTHEAST MINNESOTA
  WABASHA COUNTY IN SOUTHEAST MINNESOTA
  FILLMORE COUNTY IN SOUTHEAST MINNESOTA
  OLMSTED COUNTY IN SOUTHEAST MINNESOTA
  WINONA COUNTY IN SOUTHEAST MINNESOTA
  BUFFALO COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 1030 AM CDT

* AT 731 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
  A LARGE AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS 
  MUCH OF THE AREA. THIS RAIN IS FALLING ON ALREADY SATURATED
  SOILS. 

* SOME LOCATIONS WHICH MAY BE AFFECTED INCLUDE...
  AUSTIN
  DODGE CENTER
  SPRING VALLEY
  ROCHESTER
  MODENA
  WINONA
  WABASHA

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 FOvRGE 
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS... 
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.
$$

BOYNE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 4:58 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Mower	47 min
Apr 11, 6:03 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted	42 min
Apr 11, 6:26 PM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant	64 min

Nearby

Flash Flood Warnings in Minnesota, 2001 Flash Flood Warnings in Wisconsin, 2001 Every flash flood warning in 2001

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.