Alert archive / Wisconsin / Tornado Warnings in 1997

Tornado Warning 6, NWS Green Bay, WI

July 16, 1997Shawano County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 16, 1997, 3:52 PM CDT for Shawano County, Wisconsin. It was in force for 48 min. 2 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, 3:52 PM CDT (20:52 UTC)
Expired: Jul 16, 1997, 4:40 PM CDT
In force: 48 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 61 km from the middle of the area, began a volume at 21:07 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	Remark
Jul 16, 4:30 PM CDT	Thunderstorm Wind 61	Morgan, WI
Jul 16, 4:30 PM CDT	Thunderstorm Wind	Wittenberg, 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, 1:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.9 hours before the alert went out and 63 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 KGRB 162054 RRA
TORGRB
WIC115-162140-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
352 PM CDT WED JUL 16 1997

* TORNADO WARNING FOR
  SHAWANO COUNTY - NORTHEASTERN WISCONSIN

* UNTIL 440 PM CDT
 
* SOME LOCATIONS AFFECTED
  BIRNAMWOOD
  ELAND
  WITTENBERG

* AT 350 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES NORTHWEST OF BIRNAMWOOD. THE STORM WAS MOVING
  SOUTHEAST AT 25 MPH.

* THE STORM WILL BE NEAR BIRNAMWOOD AND ELAND BY 405 PM...AND
  WITTENBERG BY 420 PM.

IF YOU ARE NEAR THIS DANGEROUS STORM...TAKE COVER IMMEDIATELY IN
THE LOWEST FLOOR AND INNER MOST ROOM OF A BUILDING.

JKL/EB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 6:49 AM CDT	Severe Thunderstorm Warning	GRB	Oneida, Vilas	61 min
Jul 16, 12:30 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	75 min
Jul 16, 1:05 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	75 min
Jul 16, 1:56 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Oneida	79 min
Jul 16, 2:08 PM CDT	Tornado Warning	GRB	Oneida	47 min
Jul 16, 2:20 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	80 min
Jul 16, 2:31 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	74 min
Jul 16, 3:10 PM CDT	Tornado Warning	GRB	Lincoln	35 min
Jul 16, 3:15 PM CDT	Tornado Warning	GRB	Langlade	35 min
Jul 16, 3:29 PM CDT	Tornado Warning	GRB	Marathon	46 min
Jul 16, 3:43 PM CDT	Severe Thunderstorm Warning	GRB	Menominee	47 min
Jul 16, 3:59 PM CDT	Tornado Warning	GRB	Menominee	36 min
Jul 16, 4:11 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	79 min
Jul 16, 4:14 PM CDT	Tornado Warning	GRB	Marathon	36 min
Jul 16, 4:37 PM CDT	Tornado Warning	GRB	Portage, Waupaca	48 min
Jul 16, 4:40 PM CDT	Tornado Warning	GRB	Shawano	35 min
Jul 16, 4:50 PM CDT	Tornado Warning	GRB	Portage, Wood	45 min
Jul 16, 4:56 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie	79 min
Jul 16, 5:06 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	79 min
Jul 16, 5:25 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Winnebago	65 min
Jul 16, 5:39 PM CDT	Tornado Warning	GRB	Waushara	36 min
Jul 16, 6:00 PM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	80 min
Jul 16, 6:26 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	64 min

Nearby

Tornado Warnings in Wisconsin, 1997 Every tornado warning in 1997 Tornadoes 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.