Alert archive / Wisconsin / Tornado Warnings in 2001

Tornado Warning 3, NWS Green Bay, WI

September 6, 2001Oneida County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Sep 6, 2001, 8:16 PM CDT for Oneida County, Wisconsin. It was in force for 44 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: Sep 6, 2001, 8:16 PM CDT (01:16 UTC)
Expired: Sep 6, 2001, 9:00 PM CDT
In force: 44 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Oneida County, WI

The radar

The Green Bay radar (KGRB), 174 km from the middle of the area, began a volume at 01:18 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.3 hours before the alert went out and 176 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: 291 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

645 
WFUS53 KGRB 070116
TORGRB
WIC085-070200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
816 PM CDT THU SEP 6 2001

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  ONEIDA COUNTY IN WISCONSIN

* UNTIL 900 PM CDT

* AT 816 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST
  DANGEROUS PART OF THE STORM WAS LOCATED 5 MILES SOUTHWEST OF
  RHINELANDER. IT WAS MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  RHINELANDER BY 825 PM CDT.
  STARKS BY 850 PM CDT.
  SUGAR CAMP BY 855 PM CDT.
  THREE LAKES BY 900 PM CDT.

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

CAMPERS AND OTHERS SHOULD SEEK SHELTER IN A STURDY BUILDING
IMMEDIATELY.

$$

LAT...LON 4561 8958 4553 8934 4572 8906 4586 8925

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 7:28 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Oneida, Vilas	62 min
Sep 6, 9:56 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	34 min
Sep 7, 1:12 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	33 min
Sep 7, 1:25 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Outagamie	35 min
Sep 7, 1:44 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Manitowoc	31 min
Sep 7, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	39 min
Sep 7, 2:10 PM CDT	Severe Thunderstorm Warning	GRB	Brown	50 min
Sep 7, 6:35 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	40 min
Sep 7, 6:55 PM CDT	Severe Thunderstorm Warning	GRB	Wood	65 min

Nearby

Tornado Warnings in Wisconsin, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.