Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 57, NWS Milwaukee, WI

July 16, 1997Green Lake County, Marquette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 16, 1997, 5:51 PM CDT for Green Lake County, Marquette County, Wisconsin. It was in force for 59 min. 5 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: Jul 16, 1997, 5:51 PM CDT (22:51 UTC)
Expired: Jul 16, 1997, 6:50 PM CDT
In force: 59 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 22:52 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
Jul 16, 6:13 PM CDT	Thunderstorm Wind	Green Lake, WI
Jul 16, 6:20 PM CDT	Hail 0.75	Neshkoro, WI
Jul 16, 6:30 PM CDT	Thunderstorm Wind	Princeton, WI
Jul 16, 6:35 PM CDT	Thunderstorm Wind	Neshkoro, WI
Jul 16, 6:40 PM CDT	Hail 1.75	Princeton, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 16, 5:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.9 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: 2398 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMKE 162252 RRA
SVRMKE
WIC039-047-077-162350-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
551 PM CDT WED JUL 16 1997

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

* UNTIL 650 PM CDT
 
* SOME LOCATIONS AFFECTED
  BERLIN       BY 6 PM
  GREEN LAKE   BY 610 PM
  RIPON        BY 610 PM

* AT 547 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
  OF SEVERE THUNDERSTORMS STRETCHING FROM NEAR WAUTOMA IN WAUSHARA
  COUNTY TO NEENAH IN WINNEBAGO COUNTY. THE LINE OF STORMS WAS
  MOVING SOUTHEAST AT 25 MPH.

THESE ARE DANGEROUS STORMS. IF YOU ARE IN ITS PATH YOU SHOULD MOVE
INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS.

A TORNADO WATCH IS ALSO IN EFFECT. REMEMBER...THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

THV/CG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 5:51 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	59 min
Jul 16, 6:21 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	59 min
Jul 16, 6:29 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Washington	2 hr
Jul 16, 6:29 PM CDT	Severe Thunderstorm Warning	MKX	Dodge	2 hr
Jul 16, 6:34 PM CDT	Tornado Warning	MKX	Fond du Lac, Green Lake	46 min
Jul 16, 6:56 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	59 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.