Alert archive / Wisconsin / Tornado Warnings in 2011

Tornado Warning 4, NWS Green Bay, WI

April 10, 2011Langlade County, Lincoln County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Apr 10, 2011, 6:40 PM CDT for Langlade County, Lincoln County, Wisconsin. It was in force for 50 min. 2 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, 6:40 PM CDT (23:40 UTC)
Expired
Apr 10, 2011, 7:30 PM CDT
In force
50 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon

Counties Langlade County, WI, Lincoln County, WI

The radar

The Green Bay radar (KGRB), 155 km from the middle of the area, began a volume at 23:41 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

TimeReportWhereRemark
Apr 10, 6:45 PM CDTTSTM WND DMGGleason, WIDAMAGE TO A HOUSE ON COUNTY J ROAD FROM A POSSIBLE TORNADO.
Apr 10, 6:54 PM CDTTSTM WND DMGElcho, WITWO TREES KNOCKED 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.

IssuedProductOfficeLasted
Apr 10, 3:19 PM CDTTornado Watch PDSSPC7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.7 hours before the alert went out and 157 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2011-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 56 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2011-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
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

Open this sounding in Storm Lab

The text

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

631 
WFUS53 KGRB 102340
TORGRB
WIC067-069-110030-
/O.NEW.KGRB.TO.W.0004.110410T2340Z-110411T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
640 PM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LANGLADE COUNTY IN NORTH CENTRAL WISCONSIN...
  CENTRAL LINCOLN COUNTY IN NORTH CENTRAL WISCONSIN...

* UNTIL 730 PM CDT

* AT 636 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 13 MILES WEST OF MERRILL...OR 21 MILES EAST OF
  MEDFORD...AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PARRISH...IRMA...BLOOMVILLE...GLEASON...HARRISON...SUMMIT LAKE...
  ELCHO AND POST LAKE.

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 4540 9004 4549 8946 4549 8942 4547 8942
      4546 8905 4533 8906 4521 9005 4528 9005
TIME...MOT...LOC 2340Z 242DEG 46KT 4526 8987

$$

SKOWRONSKI
2 follow-up statements
736 
WWUS53 KGRB 110004
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
704 PM CDT SUN APR 10 2011

WIC067-069-110030-
/O.CON.KGRB.TO.W.0004.000000T0000Z-110411T0030Z/
LINCOLN WI-LANGLADE WI-
704 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN LANGLADE AND
CENTRAL LINCOLN COUNTIES UNTIL 730 PM CDT...

AT 658 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 10 MILES SOUTHWEST OF PARRISH...OR 21 MILES SOUTH
OF RHINELANDER...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  PARRISH...HARRISON...SUMMIT LAKE...ELCHO AND POST LAKE.

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 4523 8990 4543 8984 4549 8946 4549 8942
      4547 8942 4546 8905 4533 8906
TIME...MOT...LOC 0003Z 246DEG 45KT 4537 8950

$$

SKOWRONSKI
101 
WWUS53 KGRB 110026
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
726 PM CDT SUN APR 10 2011

WIC069-110033-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-110411T0030Z/
LINCOLN WI-
726 PM CDT SUN APR 10 2011

...THE TORNADO WARNING FOR NORTHERN LINCOLN COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4547 8942 4546 8905 4533 8906 4533 8907
      4532 8912 4532 8916 4530 8932 4529 8942
TIME...MOT...LOC 0023Z 246DEG 45KT 4547 8917

$$

WIC067-110030-
/O.CON.KGRB.TO.W.0004.000000T0000Z-110411T0030Z/
LANGLADE WI-
726 PM CDT SUN APR 10 2011

THE PORTION OF THE WARNING COVERING NORTHWESTERN LANGLADE COUNTY WAS 
REPLACED WITH A SUBSEQUENT TORNADO WARNING...WHICH IS IN EFFECT 
UNTIL 745 PM.

&&

LAT...LON 4547 8942 4546 8905 4533 8906 4533 8907
      4532 8912 4532 8916 4530 8932 4529 8942
TIME...MOT...LOC 0023Z 246DEG 45KT 4547 8917

$$

SKOWRONSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:09 PM CDTMarine Dense Fog AdvisoryGRB15 hr
Apr 9, 9:25 PM CDTDense Fog AdvisoryGRBDoor, Kewaunee, Manitowoc6 hr
Apr 9, 11:36 PM CDTSevere Thunderstorm WarningGRBForest, Oneida, Vilas39 min
Apr 9, 11:58 PM CDTSevere Thunderstorm WarningGRBFlorence34 min
Apr 10, 3:13 AM CDTSevere Thunderstorm WarningGRBBrown, Oconto, Outagamie, Shawano30 min
Apr 10, 3:20 AM CDTSpecial Marine WarningGRB34 min
Apr 10, 3:41 AM CDTSmall Craft AdvisoryGRB42 hr
Apr 10, 10:13 AM CDTMarine Dense Fog AdvisoryGRB11 hr
Apr 10, 10:20 AM CDTRiver Flood WarningGRBWood4 days
Apr 10, 10:36 AM CDTRiver Flood WarningGRBMarathon47 hr
Apr 10, 1:28 PM CDTRiver Flood WarningGRBShawano, Waupaca4 days
Apr 10, 3:38 PM CDTRiver Flood WarningGRBMarathon65 hr
Apr 10, 4:10 PM CDTRiver Flood WarningGRBLincoln, Marathon64 hr
Apr 10, 4:17 PM CDTRiver Flood WarningGRBWood41 hr
Apr 10, 4:26 PM CDTSevere Thunderstorm WarningGRBKewaunee19 min
Apr 10, 4:28 PM CDTSpecial Marine WarningGRB45 min
Apr 10, 5:31 PM CDTTornado WarningGRBLincoln, Marathon44 min
Apr 10, 6:04 PM CDTSevere Thunderstorm WarningGRBPortage, Waushara, Wood56 min
Apr 10, 6:14 PM CDTTornado WarningGRBLanglade, Lincoln, Marathon, Shawano46 min
Apr 10, 6:31 PM CDTTornado WarningGRBWaushara29 min
Apr 10, 6:58 PM CDTTornado WarningGRBWaupaca, Waushara, Winnebago32 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.