Alert archive / Wisconsin / Tornado Warnings in 2011
Tornado Warning 6, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Apr 10, 2011, 7:15 PM CDT for Forest County, Langlade County, Oneida County, Wisconsin. It was in force for 30 min. 4 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
- Apr 10, 2011, 7:15 PM CDT (00:15 UTC)
- Expired
- Apr 10, 2011, 7:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
Counties Forest County, WI, Langlade County, WI, Oneida County, WI
The radar
The Marquette radar (KMQT), 139 km from the middle of the area, began a volume at 00:15 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 |
|---|---|---|---|
| Apr 10, 7:30 PM CDT | TSTM WND DMG | 3 Ese Argonne, WI | TREES AND POWER LINES DOWN. ALSO 1 TO 1.5 INCH HAIL. |
| Apr 10, 7:33 PM CDT | TORNADO | 3 Se Argonne, WI | EF2 TORNADO IN CENTRAL FOREST COUNTY. PATH LENGTH APPROX 10 MILES, PATH WIDTH 600 YARDS. |
| Apr 10, 7:35 PM CDT | HAIL 1.75 | Argonne, WI | |
| Apr 10, 7:35 PM CDT | HAIL 2 | 2 S Crandon, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 10, 3:19 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 143 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.
- Mixed-layer CAPE
- 1647 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 399 m²/s²
- 0-3 km storm-relative helicity
- 397 m²/s²
- Significant tornado parameter
- 4.2
- Supercell composite
- 11.4
The text
As transmitted, in the capitals the NWS used until 2016.
389
WFUS53 KGRB 110015
TORGRB
WIC041-067-085-110045-
/O.NEW.KGRB.TO.W.0006.110411T0015Z-110411T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
715 PM CDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL FOREST COUNTY IN NORTHEAST WISCONSIN...
NORTHWESTERN LANGLADE COUNTY IN NORTH CENTRAL WISCONSIN...
SOUTHEASTERN ONEIDA COUNTY IN NORTH CENTRAL WISCONSIN...
* UNTIL 745 PM CDT
* AT 711 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PARRISH...OR 15 MILES SOUTH OF
RHINELANDER...AND MOVING NORTHEAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
CRANDON...SUMMIT LAKE...ENTERPRISE...ELCHO...POST LAKE...PELICAN
LAKE...LENNOX AND MONICO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4577 8866 4573 8867 4572 8864 4556 8857
4529 8942 4553 8942 4588 8872
TIME...MOT...LOC 0015Z 241DEG 40KT 4543 8934
$$
SKOWRONSKI1 follow-up statement
206
WWUS53 KGRB 110037
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
737 PM CDT SUN APR 10 2011
WIC067-110045-
/O.CAN.KGRB.TO.W.0006.000000T0000Z-110411T0045Z/
LANGLADE WI-
737 PM CDT SUN APR 10 2011
...THE TORNADO WARNING FOR NORTHWESTERN LANGLADE COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4588 8872 4577 8866 4573 8867 4572 8864
4556 8857 4547 8884 4547 8916 4567 8915
TIME...MOT...LOC 0035Z 241DEG 40KT 4554 8906
$$
WIC041-085-110045-
/O.CON.KGRB.TO.W.0006.000000T0000Z-110411T0045Z/
FOREST WI-ONEIDA WI-
737 PM CDT SUN APR 10 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN ONEIDA AND
CENTRAL FOREST COUNTIES UNTIL 745 PM CDT...
AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 9 MILES WEST OF CRANDON...MOVING NORTHEAST AT 45
MPH. ANOTHER STORM WAS LOCATED A LITTLE FARTHER SOUTHWEST...JUST
NORTH OF PELICAN LAKE. BOTH STORMS WERE ALSO CAPABLE OF PRODUCING
HAIL AS LARGE AS GOLF BALLS.
LOCATIONS IMPACTED INCLUDE...
CRANDON...GAGEN...ARGONNE...HILES...LAONA...CAVOUR AND NEWALD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4588 8872 4577 8866 4573 8867 4572 8864
4556 8857 4547 8884 4547 8916 4567 8915
TIME...MOT...LOC 0035Z 241DEG 40KT 4554 8906
$$
SKOWRONSKIThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 7:11 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 34 min |
| Apr 10, 7:27 PM CDT | Tornado Warning | GRB | Waushara | 33 min |
| Apr 10, 7:29 PM CDT | Tornado Warning | GRB | Outagamie, Waupaca | 46 min |
| Apr 10, 7:42 PM CDT | Tornado Warning | GRB | Florence, Forest, Marinette | 48 min |
| Apr 10, 7:56 PM CDT | Tornado Warning | GRB | Outagamie, Waupaca, Waushara, Winnebago | 34 min |
| Apr 10, 8:10 PM CDT | Areal Flood Advisory | GRB | Calumet, Outagamie, Winnebago | 117 min |
| Apr 10, 8:29 PM CDT | Tornado Warning | GRB | Winnebago | 31 min |
| Apr 10, 8:29 PM CDT | Tornado Warning | GRB | Brown, Calumet, Outagamie, Winnebago | 31 min |
| Apr 10, 8:56 PM CDT | Tornado Warning | GRB | Calumet, Winnebago | 34 min |
| Apr 10, 9:00 PM CDT | Tornado Warning | GRB | Brown | 30 min |
| Apr 10, 9:02 PM CDT | Special Marine Warning | GRB | 106 min | |
| Apr 10, 9:16 PM CDT | Tornado Warning | GRB | Manitowoc | 29 min |
| Apr 10, 9:19 PM CDT | Severe Thunderstorm Warning | GRB | Kewaunee | 26 min |
| Apr 10, 9:34 PM CDT | Tornado Warning | GRB | Manitowoc | 26 min |
| Apr 10, 9:46 PM CDT | River Flood Warning | GRB | Marathon, Portage | 4 days |
| Apr 10, 9:46 PM CDT | River Flood Warning | GRB | Portage, Wood | 63 hr |
| Apr 10, 10:13 PM CDT | River Flood Warning | GRB | Outagamie | 24 days |
| Apr 10, 10:13 PM CDT | River Flood Warning | GRB | Outagamie, Waupaca | 12 days |
| Apr 10, 10:13 PM CDT | River Flood Warning | GRB | Waupaca | 60 hr |
| Apr 11, 10:14 AM CDT | River Flood Warning | GRB | Marathon | 46 hr |
| Apr 11, 11:46 AM CDT | River Flood Warning | GRB | Lincoln | 45 hr |
Nearby
Tornado Warnings in Wisconsin, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.