Alert archive / Wisconsin / Flash Flood Warnings in 2000

Flash Flood Warning 29, NWS La Crosse, WI

July 26, 2000Vernon County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at Jul 26, 2000, 7:37 PM CDT for Vernon 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 26, 2000, 7:37 PM CDT (00:37 UTC)
Expired
Jul 26, 2000, 10:30 PM CDT
In force
3 hr
Issued by
NWS La Crosse, WI
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Vernon County, WI

The radar

The La Crosse radar (KARX), 33 km from the middle of the area, began a volume at 00:40 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

Davenport, (KDVN), launched 00:00Z, 0.6 hours before the alert went out and 225 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, Davenport, at 00:00Z on 2000-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1054 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 00:00Z on 2000-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
1054 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KARX 270042
FFWARX
WIC123-270330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
737 PM CDT WED JUL 26 2000

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  VERNON COUNTY IN SOUTHWEST WISCONSIN

* UNTIL 1030 PM CDT

* AT 737 PM CDT...DOPPLER RADAR ESTIMATED 3 TO 4 INCHES OF
  RAINFALL HAD OCCURRED OVER THE WARNED AREA THIS EVENING.

* SOME LOCATIONS WHICH MAY BE AFFECTED INCLUDE...
  ESOFEA
  AVALANCHE
  AREAS NORTH OF VIROQUA
  AREAS SOUTH OF WESTBY

LAW ENFORCEMENT REPORTED RISES ALONG THE WEST FORK OF THE KICKAPOO
RIVER AND IN THE SEAS BRANCH CREEK AT 730 PM.  MORE RAINFALL WILL
OCCUR...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.

BAUMGARDT

LAT...LON 4366 9070 4351 9071 4358 9112 4372 9117

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 8:45 PM CDTFlash Flood WarningARXRichland4 hr

Nearby

Flash Flood Warnings in Wisconsin, 2000Every flash flood warning in 2000

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.