Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 30, NWS Milwaukee, WI

June 15, 1997Jefferson County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 15, 1997, 6:03 PM CDT for Jefferson County, Wisconsin. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 1997, 6:03 PM CDT (23:03 UTC)
Expired: Jun 15, 1997, 7:00 PM CDT
In force: 57 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

County Jefferson County, WI

The radar

The Milwaukee radar (KMKX), 19 km from the middle of the area, began a volume at 23:03 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 15, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.1 hours before the alert went out and 171 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: 1848 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 120 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 152303 RRA
SVRMKE
WIC055-160005-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
603 PM CDT SUN JUN 15 1997

* SEVERE THUNDERSTORM WARNING FOR
  NORTHERN JEFFERSON COUNTY - SOUTHEASTERN WISCONSIN

* UNTIL 700 PM CDT
 
* SOME LOCATIONS AFFECTED
  WATERLOO
  WATERTOWN
  LAKE MILLS
  PIPERSVILLE

* AT 600 NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
  SEVERE THUNDERSTORMS 15 MILES WEST OF WATERTOWN. THE LINE OF
  STORMS WAS MOVING EAST AT 45 MPH.

THIS IS A DANGEROUS STORM. 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.

DAVIS/HENTZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 3:56 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	59 min
Jun 15, 4:38 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	62 min
Jun 15, 4:38 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Marquette	62 min
Jun 15, 4:47 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	58 min
Jun 15, 5:00 PM CDT	Severe Thunderstorm Warning	MKX	Green Lake	60 min
Jun 15, 5:10 PM CDT	Severe Thunderstorm Warning	MKX	Dane	65 min
Jun 15, 5:30 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	60 min
Jun 15, 5:33 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	67 min
Jun 15, 5:38 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	47 min
Jun 15, 6:12 PM CDT	Severe Thunderstorm Warning	MKX	Dane	48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.