Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 20, NWS Milwaukee, WI

April 18, 2002Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 18, 2002, 8:57 PM CDT for Sauk County, Wisconsin. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 18, 2002, 8:57 PM CDT (01:57 UTC)
Expired: Apr 18, 2002, 9:30 PM CDT
In force: 33 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

County Sauk County, WI

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 18, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.0 hours before the alert went out and 190 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: 188 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 2321 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 288 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 
WUUS53 KMKX 190157
SVRMKE
WIC111-190230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
857 PM CDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

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

* UNTIL 930 PM CDT

* AT 857 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES EAST OF PLAIN...OR ABOUT 9 MILES WEST
  OF SAUK CITY...MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BARABOO AT 915 PM CDT.

IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD PREPARE FOR
DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. SEEK SHELTER IMMEDIATELY

HAIL UP TO 3/4 OF AN INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES
AN HOUR ARE EXPECTED FROM THIS STORM. IF YOU ARE IN THE STORMS
PATH...SEEK SHELTER INDOORS.

LAT...LON 4327 9009 4321 8990 4341 8963 4353 8963

ZAJDEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 7:18 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha	42 min
Apr 18, 7:21 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	39 min
Apr 18, 7:28 PM CDT	Severe Thunderstorm Warning	MKX	Rock	62 min
Apr 18, 7:29 PM CDT	Special Marine Warning	MKX		61 min
Apr 18, 7:29 PM CDT	Special Marine Warning	MKX		61 min
Apr 18, 7:59 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	61 min
Apr 18, 8:10 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	65 min
Apr 18, 8:30 PM CDT	Severe Thunderstorm Warning	MKX	Green Lake, Marquette	60 min
Apr 18, 8:34 PM CDT	Special Marine Warning	MKX		56 min
Apr 18, 8:34 PM CDT	Special Marine Warning	MKX		56 min
Apr 18, 8:37 PM CDT	Severe Thunderstorm Warning	MKX	Dane	68 min
Apr 18, 8:41 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Sheboygan	64 min
Apr 18, 8:44 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	61 min
Apr 18, 8:50 PM CDT	Special Marine Warning	MKX		100 min
Apr 18, 8:50 PM CDT	Special Marine Warning	MKX		100 min
Apr 18, 9:16 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	74 min
Apr 18, 9:26 PM CDT	Severe Thunderstorm Warning	MKX	Dodge	64 min
Apr 18, 9:36 PM CDT	Severe Thunderstorm Warning	MKX	Green	54 min
Apr 18, 9:43 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	32 min
Apr 18, 9:44 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Rock	61 min
Apr 18, 9:45 PM CDT	Special Marine Warning	MKX		2 hr
Apr 18, 9:45 PM CDT	Special Marine Warning	MKX		2 hr
Apr 18, 9:48 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Sheboygan, Washington	57 min
Apr 18, 10:04 PM CDT	Special Marine Warning	MKX		116 min
Apr 18, 10:04 PM CDT	Special Marine Warning	MKX		116 min
Apr 18, 10:20 PM CDT	Severe Thunderstorm Warning	MKX	Walworth	55 min
Apr 18, 10:53 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	37 min
Apr 18, 11:24 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette, Sauk	16 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002 Every severe thunderstorm warning in 2002

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.