Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 65, NWS Milwaukee, WI

June 18, 1998Kenosha County, Milwaukee County, Racine County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 18, 1998, 7:34 PM CDT for Kenosha County, Milwaukee County, Racine County, Wisconsin. It was in force for 71 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 18, 1998, 7:34 PM CDT (00:34 UTC)
Expired
Jun 18, 1998, 8:45 PM CDT
In force
71 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Kenosha County, WI, Milwaukee County, WI, Racine County, WI

What was reported inside it

TimeReportWhereRemark
Jun 18, 8:00 PM CDTThunderstorm Wind 55Milwaukee, WI
Jun 18, 8:15 PM CDTThunderstorm WindTrevor, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 18, 5:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.6 hours before the alert went out and 191 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 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1262 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 190034 RRA
SVRMKE
WIC059-079-089-101-131-WIZ526>529-190145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
734 PM CDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENOSHA COUNTY
  MILWAUKEE COUNTY
  OZAUKEE COUNTY
  RACINE COUNTY
  WASHINGTON COUNTY IN SOUTHEASTERN WISCONSIN

* UNTIL 845 PM CDT

* AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM HORICON TO
  SULLIVAN TO NEAR DELEVAN... MOVING EAST AT 45 MPH.

* THE LINE OF SEVERE THUNDERSTORMS WILL REACH THE LAKE MICHIGAN
SHORELINE FROM NEAR PORT WASHINGTON TO KENOSHA BY 830 PM CDT

IF YOU ARE IN THESE AREAS... SEEK SAFETY IN A SMALL INTERIOR ROOM
AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION. SEVERE
THUNDERSTORMS WILL OCCASIONALLY PRODUCE TORNADOES.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:12 PM CDTSevere Thunderstorm WarningMKXWalworth63 min
Jun 18, 7:20 PM CDTSevere Thunderstorm WarningMKXWaukesha60 min
Jun 18, 7:34 PM CDTSevere Thunderstorm WarningMKXOzaukee, Washington71 min
Jun 18, 8:11 PM CDTSevere Thunderstorm WarningMKXFond du Lac, Sheboygan59 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1998Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.