Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 20, NWS Milwaukee, WI

May 28, 1998Lafayette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 28, 1998, 7:43 PM CDT for Lafayette County, Wisconsin. It was in force for 62 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
May 28, 1998, 7:43 PM CDT (00:43 UTC)
Expired
May 28, 1998, 8:45 PM CDT
In force
62 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Lafayette County, WI

What was reported inside it

TimeReportWhereRemark
May 28, 8:00 PM CDTThunderstorm WindSeymour Corners, WI
May 28, 8:42 PM CDTThunderstorm WindSouth Wayne, 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
May 28, 6:30 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.7 hours before the alert went out and 120 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 1998-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2333 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 1998-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
2333 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1689 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:58 PM CDTSevere Thunderstorm WarningMKXSauk52 min
May 28, 8:13 PM CDTSevere Thunderstorm WarningMKXColumbia, Green Lake, Marquette62 min
May 28, 8:27 PM CDTSevere Thunderstorm WarningMKXDane, Green63 min
May 28, 9:22 PM CDTSevere Thunderstorm WarningMKXJefferson, Rock53 min
May 28, 9:27 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac63 min
May 28, 9:45 PM CDTSevere Thunderstorm WarningMKXWalworth, Waukesha60 min
May 28, 9:58 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Racine62 min
May 28, 9:58 PM CDTSevere Thunderstorm WarningMKXKenosha62 min
May 28, 10:03 PM CDTSevere Thunderstorm WarningMKXSheboygan57 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.