Alert archive / Wisconsin / Tornado Warnings in 2011
Tornado Warning 2, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Apr 10, 2011, 6:14 PM CDT for 4 counties in Wisconsin. It was in force for 46 min. 5 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, 6:14 PM CDT (23:14 UTC)
- Expired
- Apr 10, 2011, 7:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
Counties Langlade County, WI, Lincoln County, WI, Marathon County, WI, Shawano County, WI
The radar
The Green Bay radar (KGRB), 159 km from the middle of the area, began a volume at 23:18 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 6:15 PM CDT | TSTM WND DMG | 3 N Hamburg, WI | TWO OR THREE HOMES AND A BARN DAMAGED. POSSIBLY A TORNADO. |
| Apr 10, 6:16 PM CDT | TORNADO | 3 S Merrill, WI | HIGHWAY 51 LINCOLN MARATHON COUNTY LINE |
| Apr 10, 6:16 PM CDT | TORNADO | Little Chicago, WI | TREES AND POWER LINES DOWN |
| Apr 10, 6:17 PM CDT | TORNADO | Hamburg, WI | SOME TREES DOWN.... |
| Apr 10, 6:53 PM CDT | TSTM WND DMG | Hamburg, WI | LARGE TREES 12 INCH DIAMETER OVER ROAD...POSSIBLE TORNADO. |
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 12:00Z, 11.2 hours before the alert went out and 161 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
- 56 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
718
WFUS53 KGRB 102314
TORGRB
WIC067-069-073-115-110000-
/O.NEW.KGRB.TO.W.0002.110410T2314Z-110411T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
614 PM CDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN LANGLADE COUNTY IN NORTH CENTRAL WISCONSIN...
SOUTHERN LINCOLN COUNTY IN NORTH CENTRAL WISCONSIN...
NORTHERN MARATHON COUNTY IN CENTRAL WISCONSIN...
WESTERN SHAWANO COUNTY IN NORTHEAST WISCONSIN...
* UNTIL 700 PM CDT
* AT 608 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 14 MILES SOUTHWEST OF MERRILL...OR 17 MILES
NORTHWEST OF WAUSAU...AND MOVING EAST AT 75 MPH. ANOTHER STORM WAS
DEVELOPING JUST TO THE WEST...AND WILL ALSO IMPACT THE WARNING
AREA.
* LOCATIONS IMPACTED INCLUDE...
WAUSAU...ANTIGO...MERRILL...BROKAW...PINE RIVER...NUTTERVILLE...
SUNSET AND BLOOMVILLE.
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 4503 9031 4504 9020 4513 9018 4513 9005
4523 9004 4534 8909 4491 8909 4494 9032
TIME...MOT...LOC 2314Z 258DEG 64KT 4510 8977
$$
SKOWRONSKI2 follow-up statements
377
WWUS53 KGRB 102334
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
634 PM CDT SUN APR 10 2011
WIC067-069-073-115-110000-
/O.CON.KGRB.TO.W.0002.000000T0000Z-110411T0000Z/
LINCOLN WI-LANGLADE WI-MARATHON WI-SHAWANO WI-
634 PM CDT SUN APR 10 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN SHAWANO...NORTHERN
MARATHON...SOUTHWESTERN LANGLADE AND SOUTHERN LINCOLN COUNTIES UNTIL
700 PM CDT...
AT 627 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO JUST
SOUTH OF MERRILL...OR 14 MILES NORTH OF WAUSAU. DOPPLER RADAR
SHOWED THIS TORNADO MOVING EAST AT 70 MPH. ANOTHER SEVERE STORM
WAS LOCATED JUST SOUTHEAST OF MEDFORD.
LOCATIONS IMPACTED INCLUDE...
PINE RIVER...AND LOCATIONS JUST WEST OF ANTIGO ON HIGHWAY 64.
LOCATIONS NORTHWEST OF ATHENS WILL BE AFFECTED BY THE WESTERN
STORM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4503 9031 4504 9020 4513 9018 4513 9005
4523 9004 4534 8909 4491 8909 4494 9032
TIME...MOT...LOC 2333Z 262DEG 58KT 4517 8956
$$
SKOWRONSKI685
WWUS53 KGRB 102355
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
655 PM CDT SUN APR 10 2011
WIC067-115-110002-
/O.CAN.KGRB.TO.W.0002.000000T0000Z-110411T0000Z/
LANGLADE WI-SHAWANO WI-
655 PM CDT SUN APR 10 2011
...THE TORNADO WARNING FOR WESTERN SHAWANO AND SOUTHWESTERN LANGLADE
COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS SHIFTED NORTH OF THE
WARNING AREA. ADDITIONAL STORMS ARE TO THE WEST...SO ADDITIONAL
WARNINGS MAY BE NECESSARY LATER THIS EVENING.
LAT...LON 4504 9021 4504 9020 4513 9018 4513 9005
4523 9004 4527 8973 4493 8986 4494 9024
TIME...MOT...LOC 2352Z 260DEG 35KT 4498 9002
$$
WIC069-073-110000-
/O.CON.KGRB.TO.W.0002.000000T0000Z-110411T0000Z/
LINCOLN WI-MARATHON WI-
655 PM CDT SUN APR 10 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL MARATHON AND
SOUTHWESTERN LINCOLN COUNTIES UNTIL 700 PM CDT...
AT 649 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 13 MILES EAST OF
ABBOTSFORD...MOVING EAST AT 40 MPH. THE STORM DID NOT APPEAR TO BE
STRONG ENOUGH TO PRODUCE A TORNADO AT THIS TIME...BUT COULD
STRENGTHEN QUICKLY...SO THE WARNING WILL BE MAINTAINED UNTIL ITS
SCHEDULED EXPIRATION TIME OF 700 PM.
LOCATIONS IMPACTED INCLUDE...
PONIATOWSKI...RIB FALLS...LITTLE CHICAGO AND HAMBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4504 9021 4504 9020 4513 9018 4513 9005
4523 9004 4527 8973 4493 8986 4494 9024
TIME...MOT...LOC 2352Z 260DEG 35KT 4498 9002
$$
SKOWRONSKIThe office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 7:09 PM CDT | Marine Dense Fog Advisory | GRB | 15 hr | |
| Apr 9, 9:25 PM CDT | Dense Fog Advisory | GRB | Door, Kewaunee, Manitowoc | 6 hr |
| Apr 9, 11:36 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Oneida, Vilas | 39 min |
| Apr 9, 11:58 PM CDT | Severe Thunderstorm Warning | GRB | Florence | 34 min |
| Apr 10, 3:13 AM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto, Outagamie, Shawano | 30 min |
| Apr 10, 3:20 AM CDT | Special Marine Warning | GRB | 34 min | |
| Apr 10, 3:41 AM CDT | Small Craft Advisory | GRB | 42 hr | |
| Apr 10, 10:13 AM CDT | Marine Dense Fog Advisory | GRB | 11 hr | |
| Apr 10, 10:20 AM CDT | River Flood Warning | GRB | Wood | 4 days |
| Apr 10, 10:36 AM CDT | River Flood Warning | GRB | Marathon | 47 hr |
| Apr 10, 1:28 PM CDT | River Flood Warning | GRB | Shawano, Waupaca | 4 days |
| Apr 10, 3:38 PM CDT | River Flood Warning | GRB | Marathon | 65 hr |
| Apr 10, 4:10 PM CDT | River Flood Warning | GRB | Lincoln, Marathon | 64 hr |
| Apr 10, 4:17 PM CDT | River Flood Warning | GRB | Wood | 41 hr |
| Apr 10, 4:26 PM CDT | Severe Thunderstorm Warning | GRB | Kewaunee | 19 min |
| Apr 10, 4:28 PM CDT | Special Marine Warning | GRB | 45 min | |
| Apr 10, 5:31 PM CDT | Tornado Warning | GRB | Lincoln, Marathon | 44 min |
| Apr 10, 6:04 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waushara, Wood | 56 min |
| Apr 10, 6:31 PM CDT | Tornado Warning | GRB | Waushara | 29 min |
| Apr 10, 6:40 PM CDT | Tornado Warning | GRB | Langlade, Lincoln | 50 min |
| Apr 10, 6:58 PM CDT | Tornado Warning | GRB | Waupaca, Waushara, Winnebago | 32 min |
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.