Alert archive / Wisconsin / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS Milwaukee, WI

June 21, 1997Milwaukee County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Jun 21, 1997, 3:01 AM CDT for Milwaukee County, Wisconsin. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 21, 1997, 3:01 AM CDT (08:01 UTC)
Expired
Jun 21, 1997, 5:00 AM CDT
In force
119 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Milwaukee County, WI

The radar

The Milwaukee radar (KMKX), 51 km from the middle of the area, began a volume at 08:04 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.0 hours before the alert went out and 163 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 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3468 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 00:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
3468 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
648 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
1.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 210801
FFWMKE
WIC079-211000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
301 AM CDT SAT JUN 21 1997

* FLASH FLOOD WARNING FOR
  NORTHERN MILWAUKEE COUNTY - SOUTHEASTERN WISCONSIN

* UNTIL 500 AM CDT
 
* SOME AREAS AFFECTED
  SHOREWOOD AND BROWN DEER

* CAUSE AND EFFECT
  A NEARLY STATIONARY LINE OF STRONG THUNDERSTORMS WAS PRODUCING
  RAINFALL RATES OF UP TO 2 INCHES PER HOUR.

* FORECAST CONDI:TIONS
  AN ADDITIONAL 1 TO 3 INCHES OF RAIN IS POSSIBLE BY 4 AM.

LEAVE FLOOD PRONE AND LOW LYING AREAS AND SEEK HIGH GROUND
IMMEDIATELY. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

BROWNING/GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 2:32 AM CDTSevere Thunderstorm WarningMKXOzaukee, Sheboygan48 min
Jun 21, 3:10 AM CDTSevere Thunderstorm WarningMKXIowa, Lafayette65 min
Jun 21, 3:55 AM CDTSevere Thunderstorm WarningMKXDane, Green55 min
Jun 21, 4:16 AM CDTFlash Flood WarningMKXDodge, Washington119 min
Jun 21, 4:16 AM CDTFlash Flood WarningMKXOzaukee119 min
Jun 21, 4:53 AM CDTSevere Thunderstorm WarningMKXDane, Jefferson62 min
Jun 21, 5:53 AM CDTSevere Thunderstorm WarningMKXLafayette62 min
Jun 21, 6:55 AM CDTSevere Thunderstorm WarningMKXGreen60 min
Jun 21, 7:32 AM CDTSevere Thunderstorm WarningMKXRock, Walworth63 min
Jun 21, 7:40 AM CDTFlash Flood WarningMKXMilwaukee, Waukesha2 hr
Jun 21, 4:54 PM CDTFlash Flood WarningMKXWaukesha4 hr

Nearby

Flash Flood Warnings in Wisconsin, 1997Every flash flood warning in 1997

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.