Alert archive / Wisconsin / Tornado Warnings in 2000

Tornado Warning 9, NWS Green Bay, WI

August 8, 2000Marathon County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Aug 8, 2000, 6:50 PM CDT for Marathon County, Wisconsin. It was in force for 40 min. 1 report 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: Aug 8, 2000, 6:50 PM CDT (23:50 UTC)
Expired: Aug 8, 2000, 7:30 PM CDT
In force: 40 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Marathon County, WI

What was reported inside it

Time	Report	Where	Remark
Aug 8, 7:07 PM CDT	Hail 0.75	Marathon, 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
Aug 8, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.8 hours before the alert went out and 139 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: 2 J/kg
Mixed-layer CIN: -349 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 87 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 
WFUS53 KGRB 082352
TORGRB

WIC073-090030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
650 PM CDT TUE AUG 8 2000

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN AND CENTRAL MARATHON COUNTY IN WISCONSIN

* UNTIL 730 PM CDT

* AT 650 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST  
  DANGEROUS PORTION OF THE STORM WAS LOCATED JUST SOUTH OF ATHENS. 
  THAT PLACES THE STORM 18 MILES WEST OF WAUSAU. IT WAS MOVING
  SOUTHEAST AT 25 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  EDGAR BY 700 PM CDT.
  MOSINEE BY 720 PM CDT.
  
MOVE TO A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
BUILDING.

TH/JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 6:00 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	60 min

Nearby

Tornado Warnings in Wisconsin, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.