Alert archive / Wisconsin / Tornado Warnings in 2008

Tornado Warning 40, NWS Twin Cities, MN

July 11, 2008Barron County, Polk County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jul 11, 2008, 9:11 PM CDT for Barron County, Polk County, Wisconsin. It was in force for 49 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
Jul 11, 2008, 9:11 PM CDT (02:11 UTC)
Expired
Jul 11, 2008, 10:00 PM CDT
In force
49 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Barron County, WI, Polk County, WI

The radar

The Minneapolis radar (KMPX), 140 km from the middle of the area, began a volume at 01:59 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
Jul 11, 9:20 PM CDTTSTM WND DMGAmery, WIA FEW TREES TOPPLED.
Jul 11, 9:30 PM CDTTSTM WND DMG4 S Almena, WITREE TOPPLED.

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
Jul 11, 6:13 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.2 hours before the alert went out and 142 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, Minneapolis, MN at 00:00Z on 2008-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2916 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2008-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 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
2916 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1332 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
1.6
Supercell composite
12.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 120211
TORMPX
WIC005-095-120300-
/O.NEW.KMPX.TO.W.0040.080712T0211Z-080712T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
911 PM CDT FRI JUL 11 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL POLK COUNTY IN NORTHWEST WISCONSIN...
  BARRON COUNTY IN NORTHWEST WISCONSIN...

* UNTIL 1000 PM CDT

* AT 908 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 5 MILES NORTH OF
  DERONDA...OR ABOUT 8 MILES SOUTHEAST OF CENTURIA...AND MOVING EAST
  AT 46 MPH.

* SOME LOCATIONS INCLUDE...
  RANGE...
  JOEL...
  CLAYTON...
  TURTLE LAKE...
  MCKINLEY...
  COMSTOCK...
  ALMENA...
  CUMBERLAND...
  HILLSDALE...
  BARRON...
  CAMERON...
  RICE LAKE...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4561 9171 4530 9162 4528 9248 4554 9257
TIME...MOT...LOC 0211Z 257DEG 40KT 4538 9239

$$

KAT
1 follow-up statement
000 
WWUS53 KMPX 120243
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
943 PM CDT FRI JUL 11 2008

WIC095-120253-
/O.CAN.KMPX.TO.W.0040.000000T0000Z-080712T0300Z/
POLK WI-
943 PM CDT FRI JUL 11 2008

...THE TORNADO WARNING FOR CENTRAL POLK COUNTY IS CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF THE WARNED 
AREA. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

LAT...LON 4530 9164 4530 9211 4558 9203 4561 9171
      4531 9162
TIME...MOT...LOC 0243Z 270DEG 39KT 4557 9176 4531 9185

$$

WIC005-120300-
/O.CON.KMPX.TO.W.0040.000000T0000Z-080712T0300Z/
BARRON WI-
943 PM CDT FRI JUL 11 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR CENTRAL
BARRON COUNTY...

AT 942 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO.  THE MOST DANGEROUS
PART OF THE STORM WAS LOCATED ALONG A LINE EXTENDING FROM 5 MILES
NORTH OF RICE LAKE TO HILLSDALE...AND MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SUMNER...HILLSDALE...RICE
LAKE...CUMBERLAND...CHETEK...CAMERON...BARRON AND ALMENA.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4530 9164 4530 9211 4558 9203 4561 9171
      4531 9162
TIME...MOT...LOC 0243Z 270DEG 39KT 4557 9176 4531 9185

$$

KAT

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 8:17 PM CDTSevere Thunderstorm WarningMPXPolk58 min
Jul 11, 8:33 PM CDTSevere Thunderstorm WarningMPXSaint Croix57 min
Jul 11, 8:46 PM CDTTornado WarningMPXPolk20 min
Jul 11, 9:29 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn, Pepin, Pierce, Polk, Saint Croix61 min

Nearby

Tornado Warnings in Wisconsin, 2008Every tornado warning in 2008Tornadoes in 2008

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.