Alert archive / Wisconsin / Tornado Warnings in 2011
Tornado Warning 27, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Aug 23, 2011, 7:07 PM CDT for Brown County, Outagamie County, Wisconsin. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2011, 7:07 PM CDT (00:07 UTC)
- Expired
- Aug 23, 2011, 7:30 PM CDT
- In force
- 23 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
Counties Brown County, WI, Outagamie County, WI
The radar
The Green Bay radar (KGRB), 8 km from the middle of the area, began a volume at 00:08 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 23, 5:19 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.1 hours before the alert went out and 10 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
- 1178 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 727 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
001 WFUS53 KGRB 240007 TORGRB WIC009-087-240030- /O.NEW.KGRB.TO.W.0027.110824T0007Z-110824T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GREEN BAY WI 707 PM CDT TUE AUG 23 2011 THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN BROWN COUNTY IN NORTHEAST WISCONSIN... NORTHEASTERN OUTAGAMIE COUNTY IN NORTHEAST WISCONSIN... * UNTIL 730 PM CDT * AT 703 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTHWEST OF PULASKI...OR 16 MILES WEST OF GREEN BAY...AND MOVING EAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... NORTHEASTERN OUTAGAMIE AND NORTHWESTERN BROWN COUNTIES. THE NORTHWEST PART OF THE CITY OF GREEN BAY. LOCATIONS JUST WEST OF HOWARD. 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 4452 8828 4461 8824 4459 8806 4450 8807 TIME...MOT...LOC 0006Z 285DEG 26KT 4457 8828 $$ SKOWRONSKI
3 follow-up statements
606 WWUS53 KGRB 240015 SVSGRB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 715 PM CDT TUE AUG 23 2011 WIC009-087-240030- /O.CON.KGRB.TO.W.0027.000000T0000Z-110824T0030Z/ OUTAGAMIE WI-BROWN WI- 715 PM CDT TUE AUG 23 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN BROWN AND NORTHEASTERN OUTAGAMIE COUNTIES UNTIL 730 PM CDT... AT 712 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTH OF PULASKI...OR 11 MILES WEST OF GREEN BAY...MOVING EAST AT 30 MPH. THE STORM HAD WEAKENED A BIT IN THE PAST 5 MINUTES...BUT IT COULD STILL REINTENSIFY AND PRODUCE A TORNADO. ANYONE IN THE NORTHWEST PART OF THE GREEN BAY METRO AREA SHOULD MOVE TO A PLACE OF SAFETY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4452 8828 4461 8824 4459 8806 4450 8807 TIME...MOT...LOC 0013Z 285DEG 26KT 4456 8821 $$ SKOWRONSKI
822 WWUS53 KGRB 240021 SVSGRB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 721 PM CDT TUE AUG 23 2011 WIC087-240029- /O.CAN.KGRB.TO.W.0027.000000T0000Z-110824T0030Z/ OUTAGAMIE WI- 721 PM CDT TUE AUG 23 2011 ...THE TORNADO WARNING FOR NORTHEASTERN OUTAGAMIE COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF OUTAGAMIE COUNTY. LAT...LON 4453 8819 4460 8818 4459 8806 4453 8807 TIME...MOT...LOC 0019Z 283DEG 27KT 4455 8814 $$ WIC009-240030- /O.CON.KGRB.TO.W.0027.000000T0000Z-110824T0030Z/ BROWN WI- 721 PM CDT TUE AUG 23 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN BROWN COUNTY UNTIL 730 PM CDT... AT 716 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 8 MILES SOUTHEAST OF PULASKI...OR 9 MILES WEST OF GREEN BAY...MOVING EAST AT 30 MPH. RADAR INDICATED THAT THE STORM HAD WEAKENED SOME...AND THE RISK OF IT PRODUCING A TORNADO HAD DIMINISHED. BUT THERE IS STILL A SMALL CHANCE THE STORM COULD RE-INTENSIFY AND PRODUCE A TORNADO...SO THE WARNING FOR THE NORTHWEST PART OF THE GREEN BAY METRO AREA WILL CONTINUE UNTIL 730 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4453 8819 4460 8818 4459 8806 4453 8807 TIME...MOT...LOC 0019Z 283DEG 27KT 4455 8814 $$ SKOWRONSKI
305 WWUS53 KGRB 240026 SVSGRB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 726 PM CDT TUE AUG 23 2011 WIC009-240035- /O.EXP.KGRB.TO.W.0027.000000T0000Z-110824T0030Z/ BROWN WI- 726 PM CDT TUE AUG 23 2011 ...THE TORNADO WARNING FOR NORTHWESTERN BROWN COUNTY WILL EXPIRE AT 730 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAD WEAKENED AND WAS MOVING OUT OVER THE BAY...AND NO LONGER POSED A RISK OF A TORNADO. HOWEVER GUSTY WINDS ARE STILL POSSIBLE. LAT...LON 4453 8819 4460 8818 4459 8806 4453 8807 TIME...MOT...LOC 0025Z 283DEG 27KT 4454 8808 $$ SKOWRONSKI
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 7:21 PM CDT | Special Marine Warning | GRB | 84 min | |
| Aug 23, 8:33 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Outagamie, Winnebago | 57 min |
| Aug 23, 8:40 PM CDT | Special Marine Warning | GRB | 85 min | |
| Aug 23, 9:15 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Manitowoc | 48 min |
| Aug 24, 4:11 AM CDT | Small Craft Advisory | GRB | 30 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.