Alert archive / Wisconsin / Flash Flood Warnings in 1996

Flash Flood Warning 2, NWS Duluth, MN

April 20, 1996Ashland County, Wisconsin

NWS Duluth, MN issued this flash flood warning at Apr 20, 1996, 4:59 PM CDT for Ashland County, Wisconsin. It was in force for 19 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 20, 1996, 4:59 PM CDT (21:59 UTC)
Expired
Apr 21, 1996, 12:00 PM CDT
In force
19 hr
Issued by
NWS Duluth, MN
Area
Whole counties

County Ashland County, WI

The radar

The Duluth radar (KDLH), 119 km from the middle of the area, began a volume at 21:59 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, 10.0 hours before the alert went out and 290 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, Minneapolis, MN at 12:00Z on 1996-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 1996-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
50 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 KDLH 202159
FFWDLH
WIC003-211700-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE DULUTH MN
459 PM CDT SAT APR 20 1996

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL NOON CDT SUNDAY
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST WISCONSIN

   ...NORTHERN ASHLAND
 
THE NATIONAL WEATHER SERVICE IN DULUTH HAS EXTENDED THE FLOOD
WARNING THAT WAS IN EFFECT FOR NORTHERN ASHLAND COUNTY THROUGH
5 PM TODAY UNTIL NOON ON SUNDAY.

WATER CONTINUED TO RISE ALONG THE BAD RIVER NEAR THE TOWN OF
ODANAH...WHICH IS 9 MILES EAST OF ASHLAND IN NORTHERN ASHLAND
COUNTY.

A NATIONAL WEATHER SERVICE METEOROLOGIST ON SCENE IN THIS AREA
REPORTED A 300 YARD STRETCH OF HIGHWAY 2 COVERED WITH WATER...AND
WATER LEVELS WERE CONTINUING TO RISE.

A MAJOR ICE JAM ON THE WEST TO EAST SEGMENT OF THE BAD RIVER JUST
NORTH OF THE INTERSECTION OF THE BAD RIVER AND HIGHWAY 2 WAS
RESULTING IN WATER BACKING UP ONTO THE LAND ADJACENT TO THE RIVER.
FLOODING IN THE COMMUNITY OF ODANAH WAS REPORTED TO BE EXTENSIVE.

AT THIS POINT...IT APPEARS THAT THE ICE JAM WILL HOLD THROUGH THE
NIGHT...AND MOST LIKELY INTO SUNDAY. RESIDENTS ALONG THE BAD RIVER
CAN EXPECT WATER LEVELS TO RISE EVEN HIGHER INTO SUNDAY AS MELTING
SNOW AND RUNOFF FROM PREVIOUS RAINFALL EVENTS MAKES ITS WAY INTO THE
RIVER BASIN.

PERSONS LIVING IN THE COMMUNITY OF ODANAH...OR ANYWHERE ALONG THE
BAD RIVER SHOULD MAKE PRECAUTIONS TO MOVE TO HIGHER GROUND AS WATER
LEVELS CONTINUE TO RISE.

THE FORECAST FOR SUNDAY NIGHT INCLUDES A GOOD CHANCE OF RAIN ACROSS
THIS AREA...WHICH MAY CHANGE OVER TO SNOW. ANY ADDITIONAL RAINFALL
OR SNOWFALL COULD CAUSE THIS DEVASTATING SITUATION TO PERSIST@ INTO
EARLY NEXT WEEK.

DAP

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 8:59 AM CDTFlash Flood WarningDLHAshland8 hr

Nearby

Flash Flood Warnings in Wisconsin, 1996Every flash flood warning in 1996

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.