Alert archive / Wisconsin / Flash Flood Warnings in 2000

Flash Flood Warning 34, NWS Milwaukee, WI

September 11, 2000Milwaukee County, Waukesha County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Sep 11, 2000, 9:25 PM CDT for Milwaukee County, Waukesha County, Wisconsin. It was in force for 4 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
Sep 11, 2000, 9:25 PM CDT (02:25 UTC)
Expired
Sep 12, 2000, 1:00 AM CDT
In force
4 hr
Issued by
NWS Milwaukee, WI
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Milwaukee County, WI, Waukesha County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.4 hours before the alert went out and 160 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 00:00Z on 2000-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 406 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2000-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 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
406 J/kg
Mixed-layer CIN
-427 J/kg
Mixed-layer LCL
1060 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
225 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMKX 120225
FFWMKX
WIC079-133-120600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE-SULLIVAN WI
925 PM CDT MON SEP 11 2000

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN WAUKESHA COUNTY IN SOUTHEAST WISCONSIN
  MILWAUKEE COUNTY IN SOUTHEAST WISCONSIN

* UNTIL 100 AM CDT

* AT 925 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN WAS OCCURRING OVER MUCH OF THE WARNING AREA.

* WEATHER SERVICE DOPPLER RADAR ESTIMATES ARE THAT 2 TO 4 INCHES OF
RAIN FELL BETWEEN 630 PM AND 925 PM CDT ACROSS EASTERN WAUKESHA AND
THE NORTHERN HALF OF MILWAUKEE COUNTY. THIS RAIN...AND THE
ADDITIONAL 1 TO 3 INCHES EXPECTED...WILL CAUSE LOCAL STREAMS AND
RIVERS TO RISE RAPIDLY AND OVERFLOW THEIR BANKS.

LAW ENFORCEMENT OFFICIALS REPORTED THAT WATER WAS COVERING SOME
ROADS IN BROWN DEER TO THE DEPTH OF 2 TO 4 FEET. POOR WATER DRAINAGE
WAS ALSO NOTED IN PARTS OF EASTERN WAUKESHA COUNTY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND QUICKLY. DO NOT
ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY
FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT
IMMEDIATELY AND SEEK HIGHER GROUND. KEEP CHILDREN FROM PLAYING IN
FLOODED CULVERTS. THE RAPIDLY FLOWING WATER CAN QUICKLY CARRY THEM
AWAY.

LAT...LON 4315 8830 4285 8824 4286 8786 4318 8790

KAPLEA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 7:25 PM CDTSevere Thunderstorm WarningMKXWaukesha65 min
Sep 11, 7:38 PM CDTSevere Thunderstorm WarningMKXWalworth67 min
Sep 11, 7:45 PM CDTSevere Thunderstorm WarningMKXSauk60 min
Sep 11, 7:58 PM CDTSevere Thunderstorm WarningMKXMilwaukee62 min
Sep 11, 8:00 PM CDTSevere Thunderstorm WarningMKXRock60 min
Sep 11, 8:47 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine58 min

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.