Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 62, NWS Milwaukee, WI

July 16, 1997Columbia County, Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 16, 1997, 6:56 PM CDT for Columbia County, Sauk County, Wisconsin. It was in force for 59 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: Jul 16, 1997, 6:56 PM CDT (23:56 UTC)
Expired: Jul 16, 1997, 7:55 PM CDT
In force: 59 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

Counties Columbia County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 103 km from the middle of the area, began a volume at 23:57 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
Jul 16, 5:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.9 hours before the alert went out and 169 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 162358 RRA
SVRMKE
WIC021-111-170055-

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

* SEVERE THUNDERSTORM WARNING FOR
  COLUMBIA COUNTY - SOUTH CENTRAL WISCONSIN
  SAUK COUNTY - SOUTH CENTRAL WISCONSIN

* UNTIL 755 PM CDT
 
* SOME LOCATIONS AFFECTED
  WISCONSIN DELLS    BY 7 PM
  BARABOO            BY 710 PM
  PORTAGE            BY 710 PM

* AT 654 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
  OF SEVERE THUNDERSTORMS EXTENDED FROM ELROY IN JUNEAU COUNTY TO
  WAUPUN IN FOND DU LAC COUNTY. THE LINE OF STORMS WAS MOVING
  SOUTHEAST AT 25 MPH. EXPECT LARGE HAIL AND DAMAGING WINDS.

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR 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.
f
TH/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	Green Lake, Marquette	59 min
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

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.