Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 21, NWS Milwaukee, WI

May 28, 1998Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 28, 1998, 7:58 PM CDT for Sauk County, Wisconsin. It was in force for 52 min. 1 report 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, 7:58 PM CDT (00:58 UTC)
Expired: May 28, 1998, 8:50 PM CDT
In force: 52 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

County Sauk County, WI

What was reported inside it

Time	Report	Where	Remark
May 28, 7:59 PM CDT	Thunderstorm Wind 60	La Valle, 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.

Issued	Product	Office	Lasted
May 28, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.0 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 21 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 2843 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

515 
WUUS1 KMKE 290057 RRA
SVRMKE
WIC111-290150-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
758 PM CDT THU MAY 28 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  SAUK COUNTY IN SOUTH CENTRAL WISCONSIN

* UNTIL 850 PM CDT

* AT 753 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM NEAR VALTON AND LA
  VALLE SOUTHWARD TO NEAR REEDSBURG...MOVING EAST AT 20 MPH.

* THE LINE OF SEVERE THUNDERSTORMS WILL MOVE THROUGH LAKE
  DELTON ROCK SPRINGS AND BARABOO BETWEEN 810 PM AND 820 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.

JH/TZ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 7:43 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	62 min
May 28, 8:13 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Green Lake, Marquette	62 min
May 28, 8:27 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green	63 min
May 28, 9:22 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock	53 min
May 28, 9:27 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	63 min
May 28, 9:45 PM CDT	Severe Thunderstorm Warning	MKX	Walworth, Waukesha	60 min
May 28, 9:58 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Racine	62 min
May 28, 9:58 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha	62 min
May 28, 10:03 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	57 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1998 Every 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.