Alert archive / Wisconsin / Flash Flood Warnings in 1993

Flash Flood Warning 3, NWS La Crosse, WI

June 20, 1993Jackson County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at Jun 20, 1993, 7:47 AM CDT for Jackson County, Wisconsin. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jun 20, 1993, 7:47 AM CDT (12:47 UTC)
Expired
Jun 20, 1993, 4:45 PM CDT
In force
9 hr
Issued by
NWS La Crosse, WI
Area
Whole counties

County Jackson County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.8 hours before the alert went out and 216 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 1993-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 1993-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
25 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 
TTAA00 KLSE 201247
FFWLSE
WIC053-202145-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
747 AM CDT SUN JUN 20 1993
 
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  445 PM CDT
    FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...JACKSON COUNTY
 
THE DIRECTOR OF EMERGENCY GOVERNMENT REPORTED THAT THE DAM AT HATFIELD
IN NORTHERN JACKSON WAS ABOUT READY TO BREAK. IN ADDITION 2 CRANBERRY
BOG DAMS HAVE ALREADY BROKEN.
 
WATER FROM BOTH DAMS WILL BE FLOWING INTO THE ALREADY ELEVATED
BLACK RIVER.  INITIAL ESTIMATES INDICATED THAT A WALL OF WATER 20 TO 25
FEET HIGH WILL BE MOVING THROUGH BLACK RIVER FALLS LATER THIS MORNING
OR EARLY IN THE AFTERNOON.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE lROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
 
 
&
 
INGRAM
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 10:04 PM CDTFlash Flood WarningARXJackson8 hr
Jun 20, 10:58 AM CDTFlash Flood WarningARXBuffalo, Trempealeau12 hr
Jun 20, 4:00 PM CDTFlash Flood WarningARXJackson11 hr

Nearby

Flash Flood Warnings in Wisconsin, 1993Every flash flood warning in 1993

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.