Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 13, NWS Milwaukee, WI

April 5, 1997Milwaukee County, Ozaukee County, Washington County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 5, 1997, 5:57 PM CST for Milwaukee County, Ozaukee County, Washington County, Wisconsin. It was in force for 63 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
Apr 5, 1997, 5:57 PM CST (23:57 UTC)
Expired
Apr 5, 1997, 7:00 PM CST
In force
63 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Milwaukee County, WI, Ozaukee County, WI, Washington County, WI

The radar

The Milwaukee radar (KMKX), 54 km from the middle of the area, began a volume at 23:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 5, 6:30 PM CSTThunderstorm WindWest Bend, 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, 12.0 hours before the alert went out and 135 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 1997-04-05Temperature 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 1997-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939587897Sfc1 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
501 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
122 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 
TTAA00 KMKE 052357 RRA
SVRMKE
WIC039-047-077-079-089-131-WIZ526>528-060100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
557 PM CST SAT APR 5 1997

* SEVERE THUNDERSTORM WARNING FOR
  FOND DU LAC COUNTY - EAST CENTRAL WISCONSIN
  GREEN LAKE COUNTY - CENTRAL WISCONSIN
  MARQUETTE COUNTY - CENTRAL WISCONSIN
  MILWAUKEE COUNTY - SOUTHEASTERN WISCONSIN
  OZAUKEE COUNTY - SOUTHEASTERN WISCONSIN
  WASHINGTON COUNTY - SOUTHEASTERN WISCONSIN

* UNTIL 700 PM CST
 
*

* AT 555 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS WAS RACING ACROSS SOUTHEAST WISCONSIN. THE
LINE OF STORMS WAS MOVING NORTHEAST AT 50 MPH...AND HAS A HISTORY
OF PRODUCING DAMAGING WINDS.

THIS IS A DANGEROUS LINE OF STORMS. IF YOU ARE IN ITS PATH YOU
SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO
NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY
UNTIL THE STORM HAS PASSED.

BROWNING/DAVIS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 4:07 PM CSTSevere Thunderstorm WarningMKXLafayette53 min
Apr 5, 4:39 PM CSTSevere Thunderstorm WarningMKXGreen66 min
Apr 5, 4:58 PM CSTSevere Thunderstorm WarningMKXDane, Iowa77 min
Apr 5, 4:58 PM CSTSevere Thunderstorm WarningMKXRock77 min
Apr 5, 5:16 PM CSTSevere Thunderstorm WarningMKXJefferson, Walworth74 min
Apr 5, 5:16 PM CSTSevere Thunderstorm WarningMKXColumbia, Sauk74 min
Apr 5, 5:36 PM CSTSevere Thunderstorm WarningMKXDodge, Racine, Waukesha69 min
Apr 5, 5:36 PM CSTSevere Thunderstorm WarningMKXKenosha69 min
Apr 5, 5:57 PM CSTSevere Thunderstorm WarningMKXGreen Lake, Marquette63 min
Apr 5, 5:57 PM CSTSevere Thunderstorm WarningMKXFond du Lac63 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.