Alert archive / Wisconsin / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Milwaukee, WI

June 15, 1997Green County, Iowa County, Lafayette County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Jun 15, 1997, 8:50 PM CDT for Green County, Iowa County, Lafayette 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 counties it named.

The facts

Issued
Jun 15, 1997, 8:50 PM CDT (01:50 UTC)
Expired
Jun 16, 1997, 1:00 AM CDT
In force
4 hr
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Green County, WI, Iowa County, WI, Lafayette County, WI

The radar

The Milwaukee radar (KMKX), 116 km from the middle of the area, began a volume at 01:53 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, 1.8 hours before the alert went out and 137 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 1997-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 654 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 1997-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
654 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1426 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 160150
FFWMKE
WIC045-049-065-160550-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
850 PM CDT SUN JUN 15 1997

* FLASH FLOOD WARNING FOR
  NORTHERN GREEN COUNTY - SOUTH CENTRAL WISCONSIN
  SOUTHERN IOWA COUNTY - SOUTH CENTRAL WISCONSIN
  LAFAYETTE COUNTY - SOUTH CENTRAL WISCONSIN

* UNTIL 100 AM CDT
 
* SOME AREAS AFFECTED
  BLANCHARDVILLE
  BELMONT
  NEW GLARUS
  MINERAL POINT

* CAUSE AND EFFECT
  VERY HEAVY RAINFALL OF NEARLY 4 INCHES HAS CAUSED FLOODING ACROSS
  LAFAYETTE...NORTHERN GREEN AND SOUTHERN IOWA COUNTIES

* FORECAST CONDITIONS
  AN ADDITIONAL INCH OR TWO OF RAIN IS POSSIBLE BEFORE 11 PM

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

DAVIS/HENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 7:07 PM CDTSevere Thunderstorm WarningMKXGreen, Rock53 min
Jun 15, 9:40 PM CDTSevere Thunderstorm WarningMKXRock, Walworth60 min

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.