Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 59, NWS Milwaukee, WI

May 18, 2000Waukesha County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 18, 2000, 8:59 AM CDT for Waukesha County, Wisconsin. It was in force for 61 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
May 18, 2000, 8:59 AM CDT (13:59 UTC)
Expired
May 18, 2000, 10:00 AM CDT
In force
61 min
Issued by
NWS Milwaukee, WI
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Waukesha County, WI

What was reported inside it

TimeReportWhereRemark
May 18, 9:06 AM CDTHail 1.25Delafield, WI
May 18, 9:45 AM CDTHail 0.75Waukesha, 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 2.0 hours before the alert went out and 158 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 2000-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 2000-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 square meters per square second.19395878Sfc1 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
508 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
169 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 181400
SVRMKE
WIC133-181500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
859 AM CDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WAUKESHA COUNTY IN SOUTHEAST WISCONSIN
  
* UNTIL 1000 AM CDT

* AT 859 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED 4 MILES NORTH OF SULLIVAN...OR 4 MILES
  SOUTHWEST OF OCONOMOWOC...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OCONOMOWOC BY 900 AM CDT.
  OKAUCHEE LAKE BY 905 AM CDT.
  DELAFIELD BY 910 AM CDT.
  PEWAUKEE BY 915 AM CDT.

HAIL UP TO ONE INCH IN DIAMETER AND WINDS NEAR 60 MILES AN HOUR ARE 
EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL 
THE STORM HAS PASSED.

LAT...LON 4316 8866 4298 8867 4292 8807 4318 8807

HENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:03 PM CDTSevere Thunderstorm WarningMKXColumbia57 min
May 17, 7:10 PM CDTFlash Flood WarningMKXColumbia, Green Lake, Marquette2 hr
May 17, 7:23 PM CDTSevere Thunderstorm WarningMKXDodge67 min
May 17, 7:49 PM CDTFlash Flood WarningMKXDodge116 min
May 17, 8:09 PM CDTSevere Thunderstorm WarningMKXWashington, Waukesha66 min
May 17, 8:45 PM CDTFlash Flood WarningMKXFond du Lac, Green Lake, Marquette, Sauk, Sheboygan6 hr
May 17, 8:45 PM CDTFlash Flood WarningMKXColumbia, Dodge, Iowa, Ozaukee, Washington6 hr
May 17, 8:45 PM CDTFlash Flood WarningMKXDane, Jefferson, Lafayette, Milwaukee, Waukesha6 hr
May 17, 8:45 PM CDTFlash Flood WarningMKXGreen, Kenosha, Racine, Rock, Walworth6 hr
May 18, 3:09 AM CDTFlash Flood WarningMKXKenosha3 hr
May 18, 6:26 AM CDTSevere Thunderstorm WarningMKXIowa64 min
May 18, 7:08 AM CDTSevere Thunderstorm WarningMKXDane67 min
May 18, 8:08 AM CDTSevere Thunderstorm WarningMKXDane, Dodge, Jefferson67 min
May 18, 8:45 AM CDTSevere Thunderstorm WarningMKXKenosha, Racine, Walworth60 min
May 18, 9:14 AM CDTSevere Thunderstorm WarningMKXMilwaukee61 min
May 18, 9:24 AM CDTSevere Thunderstorm WarningMKXOzaukee51 min
May 18, 10:15 AM CDTSevere Thunderstorm WarningMKXDane, Dodge, Jefferson60 min
May 18, 11:17 AM CDTSevere Thunderstorm WarningMKXMilwaukee, Waukesha58 min
May 18, 11:59 AM CDTSevere Thunderstorm WarningMKXKenosha, Racine, Walworth61 min
May 18, 12:23 PM CDTSevere Thunderstorm WarningMKXRock, Walworth67 min
May 18, 12:45 PM CDTSevere Thunderstorm WarningMKXDane, Iowa60 min
May 18, 1:06 PM CDTSevere Thunderstorm WarningMKXWaukesha54 min
May 18, 1:34 PM CDTSevere Thunderstorm WarningMKXOzaukee, Washington56 min
May 18, 1:49 PM CDTSevere Thunderstorm WarningMKXWalworth, Waukesha56 min
May 18, 2:48 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Ozaukee, Waukesha57 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2000Every severe thunderstorm warning in 2000

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.