Alert archive / Wisconsin / Tornado Warnings in 2010

Tornado Warning 4, NWS Twin Cities, MN

June 15, 2010Polk County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jun 15, 2010, 3:04 PM CDT for Polk County, Wisconsin. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 15, 2010, 3:04 PM CDT (20:04 UTC)
Expired
Jun 15, 2010, 3:30 PM CDT
In force
26 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Polk County, WI

The radar

The Minneapolis radar (KMPX), 112 km from the middle of the area, began a volume at 20:03 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 114 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 12:00Z on 2010-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 504 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 12:00Z on 2010-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
504 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

101 
WFUS53 KMPX 152004
TORMPX
WIC095-152030-
/O.NEW.KMPX.TO.W.0004.100615T2004Z-100615T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
304 PM CDT TUE JUN 15 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 330 PM CDT

* AT 259 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 6 MILES SOUTH OF
  BALSAM LAKE...OR ABOUT 5 MILES NORTH OF WANDEROOS...AND MOVING
  NORTHEAST AT 10 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  BALSAM LAKE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

&&

LAT...LON 4552 9230 4531 9228 4531 9252 4542 9255
TIME...MOT...LOC 2004Z 241DEG 7KT 4539 9249

$$
1 follow-up statement
085 
WWUS53 KMPX 152018
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
318 PM CDT TUE JUN 15 2010

WIC095-152030-
/O.CON.KMPX.TO.W.0004.000000T0000Z-100615T2030Z/
POLK WI-
318 PM CDT TUE JUN 15 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL POLK COUNTY UNTIL
330 PM CDT...

AT 317 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR BALSAM LAKE...MOVING NORTHEAST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
  BALSAM LAKE.

LAT...LON 4534 9249 4544 9250 4552 9230 4538 9229
TIME...MOT...LOC 2019Z 238DEG 9KT 4543 9244

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 1:23 PM CDTSpecial Weather StatementMPXBarron, Dunn, Pierce, Polk, Saint Croix112 min
Jun 15, 2:42 PM CDTAreal Flood AdvisoryMPXPolk, Saint Croix6 hr
Jun 15, 3:15 PM CDTTornado WarningMPXSaint Croix30 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.