Alert archive / Wisconsin / Tornado Warnings in 2011
Tornado Warning 1, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Apr 10, 2011, 5:31 PM CDT for Lincoln County, Marathon County, Wisconsin. It was in force for 44 min. 6 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, 5:31 PM CDT (22:31 UTC)
- Expired
- Apr 10, 2011, 6:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
Counties Lincoln County, WI, Marathon County, WI
The radar
The Green Bay radar (KGRB), 161 km from the middle of the area, began a volume at 22:30 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, 6:00 PM CDT | TORNADO 0 | 2 N Hamburg, WI | EF3 TORNADO WHICH HEAVILY AFFECTED MERRILL IN LINCOLN COUNTY. PATH LENGTH APPROX 22 MILES, WIDTH AT LEAST 1/4 MILE. WORST DAMAGE OCCURRED JUST NORTH OF KRRL AT 618 PM. |
| Apr 10, 6:10 PM CDT | TSTM WND DMG | 2 Nw Hamburg, WI | LOTS OF TREES DOWN NEAR HIGHWAY FF NEAR LITTLE CHICAGO |
| 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.... |
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, 10.5 hours before the alert went out and 162 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.
853
WFUS53 KGRB 102231
TORGRB
WIC069-073-102315-
/O.NEW.KGRB.TO.W.0001.110410T2231Z-110410T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
531 PM CDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* TORNADO WARNING FOR...
LINCOLN COUNTY IN NORTH CENTRAL WISCONSIN...
NORTHERN MARATHON COUNTY IN CENTRAL WISCONSIN...
* UNTIL 615 PM CDT
* AT 526 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 18 MILES WEST OF ABBOTSFORD...OR 22 MILES
SOUTHWEST OF MEDFORD...AND MOVING NORTHEAST AT 65 MPH.
* LOCATIONS IMPACTED INCLUDE...
ABBOTSFORD...MILAN...ATHENS...HAMBURG...MERRILL.
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 9019 4513 9005
4535 9005 4556 8959 4556 8942 4512 8942
4486 8939 4482 9032
TIME...MOT...LOC 2230Z 241DEG 58KT 4496 9061
$$
SKOWRONSKI2 follow-up statements
969
WWUS53 KGRB 102246
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
546 PM CDT SUN APR 10 2011
WIC069-073-102315-
/O.CON.KGRB.TO.W.0001.000000T0000Z-110410T2315Z/
LINCOLN WI-MARATHON WI-
546 PM CDT SUN APR 10 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN MARATHON AND
LINCOLN COUNTIES UNTIL 615 PM CDT...
AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR DORCHESTER...OR 9 MILES SOUTH OF MEDFORD...
MOVING EAST AT 65 MPH.
LOCATIONS IMPACTED INCLUDE...
ABBOTSFORD...MILAN...ATHENS...HAMBURG...AND MERRILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4503 9031 4504 9020 4513 9019 4513 9005
4535 9005 4556 8959 4556 8942 4512 8942
4486 8939 4482 9032
TIME...MOT...LOC 2245Z 248DEG 59KT 4504 9028
$$
SKOWRONSKI767
WWUS53 KGRB 102306
SVSGRB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
606 PM CDT SUN APR 10 2011
WIC069-073-102315-
/O.CON.KGRB.TO.W.0001.000000T0000Z-110410T2315Z/
LINCOLN WI-MARATHON WI-
606 PM CDT SUN APR 10 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN MARATHON AND
SOUTHERN LINCOLN COUNTIES UNTIL 615 PM CDT...
AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 10 MILES EAST OF DORCHESTER...OR 12 MILES SOUTHEAST
OF MEDFORD...MOVING EAST AT 55 MPH.
LOCATIONS IMPACTED INCLUDE...
ATHENS...HAMBURG...AND LITTLE CHICAGO...AND SOUTHERN LINCOLN
COUNTY.
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 9019 4513 9005
4530 9005 4545 8942 4512 8942 4486 8939
4489 9032
TIME...MOT...LOC 2303Z 258DEG 46KT 4506 9006
$$
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, 6:04 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waushara, Wood | 56 min |
| Apr 10, 6:14 PM CDT | Tornado Warning | GRB | Langlade, Lincoln, Marathon, Shawano | 46 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.