Alert archive / Wisconsin / Tornado Warnings in 2002

Tornado Warning 10, NWS Green Bay, WI

July 28, 2002Marathon County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 28, 2002, 10:04 PM CDT for Marathon County, Wisconsin. It was in force for 26 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2002, 10:04 PM CDT (03:04 UTC)
Expired: Jul 28, 2002, 10:30 PM CDT
In force: 26 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

County Marathon County, WI

The radar

The Green Bay radar (KGRB), 140 km from the middle of the area, began a volume at 03:04 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 28, 10:10 PM CDT	Thunderstorm Wind 50 E	Rib Falls, WI
Jul 28, 10:12 PM CDT	Thunderstorm Wind 52 E	Edgar, WI
Jul 28, 10:40 PM CDT	Thunderstorm Wind 50 E	Rib Falls, 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 28, 8:05 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.1 hours before the alert went out and 142 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: 1469 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1670 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

567 
WFUS53 KGRB 290304
TORGRB
WIC073-290330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1004 PM CDT SUN JUL 28 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  MARATHON COUNTY IN WISCONSIN

* UNTIL 1030 PM CDT

* AT 1004 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND SPOTTER
  REPORTS INDICATED A TORNADO LOCATED NEAR ATHENS AND PONIATOWSKI.
  THAT PLACES   THE STORM 18 MILES WEST OF WAUSAU. IT WAS MOVING
  EAST AT 50 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  LITTLE CHICAGO BY 1010 PM CDT.
  BROKAW BY 1020 PM CDT.
  NUTTERVILLE BY 1025 PM CDT.

MOVE TO A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
BUILDING.

LAT...LON 4509 9005 4491 9000 4497 8924 4511 8927

KIECKBUSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 9:34 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Marathon	56 min
Jul 28, 10:30 PM CDT	Tornado Warning	GRB	Marathon	45 min
Jul 28, 11:10 PM CDT	Severe Thunderstorm Warning	GRB	Menominee, Shawano	65 min

Nearby

Tornado Warnings in Wisconsin, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.