Alert archive / Wisconsin / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 608

June 18, 199824 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 1998, 5:15 PM CDT for 24 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 18, 1998, 5:15 PM CDT (22:15 UTC)
Expired
Jun 18, 1998, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 24 counties

Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

Warnings issued inside it

10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 18, 5:50 PM CDTSevere Thunderstorm WarningMKXIowa, Lafayette, Sauk50 min
Jun 18, 6:02 PM CDTSevere Thunderstorm WarningMKXColumbia, Marquette63 min
Jun 18, 6:02 PM CDTSevere Thunderstorm WarningMKXDane, Green63 min
Jun 18, 6:38 PM CDTSevere Thunderstorm WarningMKXDodge, Green Lake62 min
Jun 18, 6:38 PM CDTSevere Thunderstorm WarningMKXJefferson, Rock62 min
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 WarningMKXKenosha, Milwaukee, Racine71 min
Jun 18, 7:34 PM CDTSevere Thunderstorm WarningMKXOzaukee, Washington71 min
Jun 18, 8:11 PM CDTSevere Thunderstorm WarningMKXFond du Lac, Sheboygan59 min

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.3 hours before the alert went out and 149 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 12:00Z on 1998-06-18Temperature 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 12:00Z on 1998-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 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
1347 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 2:10 PM CDTSevere Thunderstorm WatchSPCCrawford6 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 1998Every severe thunderstorm watch 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.