Alert archive / Wisconsin / Flash Flood Warnings in 1998

Flash Flood Warning 4, NWS Milwaukee, WI

June 28, 1998Iowa County, Sauk County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Jun 28, 1998, 1:19 AM CDT for Iowa County, Sauk 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 28, 1998, 1:19 AM CDT (06:19 UTC)
Expired
Jun 28, 1998, 5:15 AM CDT
In force
4 hr
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Iowa County, WI, Sauk County, WI

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 6.3 hours before the alert went out and 181 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 1998-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4171 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 1998-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 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
4171 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 280618
FFWMKE
WIC049-065-111-281015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
119 AM CDT SUN JUN 28 1998

* FLASH FLOOD WARNING FOR
  IOWA COUNTY - SOUTH CENTRAL WISCONSIN
  LAFAYETTE COUNTY - SOUTH CENTRAL WISCONSIN
  SAUK COUNTY - SOUTH CENTRAL WISCONSIN

* UNTIL 515 AM CDT

AT 115 AM CDT DOPPLER RADAR INDICATED ANOTHER LINE OF
THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL BE MOVING INTO
SOUTHCENTRAL WISCONSIN.  THE LINE OF STORMS WILL BE MOVING INTO
IOWA...LAFAYETTE AND SAUK COUNTIES BY 130 AM WHERE UP TO 2 INCHES
AND LOCALLY MORE OF ADDITIONAL RAINFALL CAN BE EXPECTED BETWEEN 130
AM AND 530 AM CDT.  THIS AREA HAS ALREADY RECEIVED BETWEEN 1 TO 2
INCHES OF RAINFALL FROM EARLIER STORMS.

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

TH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 9:07 PM CDTSevere Thunderstorm WarningMKXSauk93 min
Jun 27, 9:54 PM CDTSevere Thunderstorm WarningMKXDane, Iowa91 min
Jun 27, 9:54 PM CDTSevere Thunderstorm WarningMKXColumbia, Marquette91 min
Jun 27, 10:22 PM CDTSevere Thunderstorm WarningMKXGreen Lake78 min
Jun 27, 11:36 PM CDTSevere Thunderstorm WarningMKXRock64 min
Jun 28, 12:00 AM CDTSevere Thunderstorm WarningMKXWalworth65 min
Jun 28, 12:30 AM CDTSevere Thunderstorm WarningMKXKenosha, Racine60 min
Jun 28, 1:19 AM CDTFlash Flood WarningMKXLafayette4 hr
Jun 28, 1:24 AM CDTSevere Thunderstorm WarningMKXIowa, Lafayette61 min
Jun 28, 2:02 AM CDTFlash Flood WarningMKXDane, Green, Rock4 hr
Jun 28, 2:06 AM CDTSevere Thunderstorm WarningMKXDane, Green59 min

Nearby

Flash Flood Warnings in Wisconsin, 1998Every flash flood warning in 1998

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.