Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 15, NWS Milwaukee, WI

April 5, 1997Green Lake County, Marquette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 5, 1997, 5:57 PM CST for Green Lake County, Marquette County, Wisconsin. It was in force for 63 min. 3 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: 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 Green Lake County, WI, Marquette County, WI

The radar

The Milwaukee radar (KMKX), 108 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

Time	Report	Where
Apr 5, 6:10 PM CST	Thunderstorm Wind 52	Marquette, WI
Apr 5, 6:15 PM CST	Thunderstorm Wind	Montello, WI
Apr 5, 6:25 PM CST	Hail 0.75	Berlin, 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 116 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: 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

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Apr 5, 5:21 PM CST, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN
521 PM CST SAT APR 5 1997

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0457 PM    NR BLANCHARDVILLE         WI   POSSIBLE TORNADO
04/05/97   LAFAYETTE

0457 PM    NR MONROE                 WI   WIND DAMAGE
04/05/97   GREEN                          TIRES AND WIRES DOWN

0507 PM    DARLINGTON                WI   WIND DAMAGE
04/05/97   LAFAYETTE                      SEVERAL ROOFS OFF HOMES
                                          POWER OUTAGES

0507 PM    NR GRATIOT                WI   WIND DAMAGE
04/05/97   LAFAYETTE                      ROOF AND POWER LINE DAMAGE
TZ

Local storm report, Apr 5, 5:22 PM CST, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN
521 PM CST SAT APR 5 1997

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0457 PM    NR BLANCHARDVILLE         WI   POSSIBLE TORNADO
04/05/97   LAFAYETTE

0457 PM    NR MONROE                 WI   WIND DAMAGE
04/05/97   GREEN                          TIRES AND WIRES DOWN

0507 PM    DARLINGTON                WI   WIND DAMAGE
04/05/97   LAFAYETTE                      SEVERAL ROOFS OFF HOMES
                                          POWER OUTAGES

0507 PM    NR GRATIOT                WI   WIND DAMAGE
04/05/97   LAFAYETTE                      ROOF AND POWER LINE DAMAGE
TZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 4:07 PM CST	Severe Thunderstorm Warning	MKX	Lafayette	53 min
Apr 5, 4:39 PM CST	Severe Thunderstorm Warning	MKX	Green	66 min
Apr 5, 4:58 PM CST	Severe Thunderstorm Warning	MKX	Dane, Iowa	77 min
Apr 5, 4:58 PM CST	Severe Thunderstorm Warning	MKX	Rock	77 min
Apr 5, 5:16 PM CST	Severe Thunderstorm Warning	MKX	Jefferson, Walworth	74 min
Apr 5, 5:16 PM CST	Severe Thunderstorm Warning	MKX	Columbia, Sauk	74 min
Apr 5, 5:36 PM CST	Severe Thunderstorm Warning	MKX	Dodge, Racine, Waukesha	69 min
Apr 5, 5:36 PM CST	Severe Thunderstorm Warning	MKX	Kenosha	69 min
Apr 5, 5:57 PM CST	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee, Washington	63 min
Apr 5, 5:57 PM CST	Severe Thunderstorm Warning	MKX	Fond du Lac	63 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1997 Every 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.