Alert archive / Wisconsin / Tornado Warnings in 2010

Tornado Warning 4, NWS Green Bay, WI

May 4, 2010Winnebago County, Wisconsin

NWS Green Bay, WI issued this tornado warning at May 4, 2010, 7:14 PM CDT for Winnebago County, Wisconsin. It was in force for 27 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
May 4, 2010, 7:14 PM CDT (00:14 UTC)
Expired
May 4, 2010, 7:41 PM CDT
In force
27 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon

County Winnebago County, WI

The radar

The Green Bay radar (KGRB), 57 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

TimeReportWhereRemark
May 4, 7:15 PM CDTTORNADOWinchester, WI
May 4, 7:17 PM CDTTSTM WND GST 602 Ne Winneconne, WIPOSSIBLE GUSTNADO ALSO SEEN
May 4, 7:17 PM CDTTSTM WND GST 60Winneconne, WI
May 4, 7:32 PM CDTHAIL 0.75Winchester, WIDIME SIZE HAIL NEAR APPLETON

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.2 hours before the alert went out and 56 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 00:00Z on 2010-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2010-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1647 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
477 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

167 
WFUS53 KGRB 050014
TORGRB
WIC139-050045-
/O.NEW.KGRB.TO.W.0004.100505T0014Z-100505T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
714 PM CDT TUE MAY 4 2010

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN WINNEBAGO COUNTY IN EAST 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 6 MILES EAST OF LAKE POYGAN...OR 16 MILES
  NORTHWEST OF OSHKOSH...AND MOVING EAST AT 35 MPH.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHERN
  WINNEBAGO COUNTY...INCLUDING THE FOLLOWING LOCATIONS WINCHESTER...
  LARSEN...NEENAH AND MENASHA.

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 4424 8887 4425 8875 4424 8840 4411 8840
      4409 8882
TIME...MOT...LOC 0014Z 258DEG 29KT 4420 8871

$$

AK
3 follow-up statements
491 
WWUS53 KGRB 050026
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
726 PM CDT TUE MAY 4 2010

WIC139-050045-
/O.CON.KGRB.TO.W.0004.000000T0000Z-100505T0045Z/
WINNEBAGO WI-
726 PM CDT TUE MAY 4 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN WINNEBAGO COUNTY
UNTIL 745 PM CDT...

AT 724 PM CDT...THE PUBLIC REPORTED A TORNADO.  THIS TORNADO WAS
LOCATED 8 MILES SOUTHWEST OF APPLETON...MOVING EAST AT 35 MPH.

AT 715 PM CDT...A TORNADO WAS REPORTED NEAR WINCHESTER. 

THE TORNADO WILL AFFECT MAINLY RURAL AREAS OF NORTHERN WINNEBAGO
COUNTY...INCLUDING THE FOLLOWING LOCATIONS NEENAH...MENASHA AND
NORTHERN LAKE WINNEBAGO.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GREEN BAY.

&&

LAT...LON 4424 8887 4425 8875 4424 8840 4411 8840
      4409 8882
TIME...MOT...LOC 0026Z 257DEG 30KT 4422 8852

$$

AK
340 
WWUS53 KGRB 050034
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
734 PM CDT TUE MAY 4 2010

WIC139-050045-
/O.CON.KGRB.TO.W.0004.000000T0000Z-100505T0045Z/
WINNEBAGO WI-
734 PM CDT TUE MAY 4 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN WINNEBAGO COUNTY
UNTIL 745 PM CDT...

AT 729 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR APPLETON...MOVING EAST AT 35 MPH.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHERN
WINNEBAGO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GREEN BAY.

&&

LAT...LON 4424 8887 4425 8875 4424 8840 4411 8840
      4409 8882
TIME...MOT...LOC 0034Z 257DEG 30KT 4423 8843

$$

AK
537 
WWUS53 KGRB 050041
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
741 PM CDT TUE MAY 4 2010

WIC139-050051-
/O.CAN.KGRB.TO.W.0004.000000T0000Z-100505T0045Z/
WINNEBAGO WI-
741 PM CDT TUE MAY 4 2010

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

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GREEN BAY.

LAT...LON 4424 8887 4425 8875 4424 8840 4411 8840
      4409 8882
TIME...MOT...LOC 0041Z 257DEG 30KT 4425 8835

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 7:30 PM CDTTornado WarningGRBBrown, Calumet, Outagamie45 min
May 4, 7:52 PM CDTSpecial Marine WarningGRB60 min
May 4, 7:58 PM CDTTornado WarningGRBBrown, Calumet, Kewaunee, Manitowoc32 min
May 4, 8:12 PM CDTTornado WarningGRBManitowoc18 min
May 5, 5:30 AM CDTSmall Craft AdvisoryGRB16 hr
May 5, 1:48 PM CDTWind AdvisoryGRBBrown, Calumet, Door, Kewaunee, Manitowoc, Marathon and 10 more5 hr

Nearby

Tornado Warnings in Wisconsin, 2010Every tornado warning in 2010Tornadoes in 2010

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.