Alert archive / Wisconsin / Tornado Warnings in 2010

Tornado Warning 60, NWS Twin Cities, MN

July 14, 2010Dunn County, Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jul 14, 2010, 2:46 PM CDT for Dunn County, Pierce County, Saint Croix County, Wisconsin. It was in force for 44 min. 8 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 14, 2010, 2:46 PM CDT (19:46 UTC)
Expired
Jul 14, 2010, 3:30 PM CDT
In force
44 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Dunn County, WI, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 90 km from the middle of the area, began a volume at 19:45 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 14, 2:54 PM CDTTORNADO5 Wnw Ellsworth, WITORNADO RATED EF-2 ON THE GROUND FOR APPROXIMATELY 15 MILES... DISSIPATING 3 MILES SOUTHWEST OF SPRING VALLEY. TORNADO MOVED TO THE EAST-NORTHEAST. DAMAGE INCLUDED STRUCTURAL DAMAGE TO HOUSES AND BARNS...AS WELL AS MANY TREES SNAPPED.
Jul 14, 2:58 PM CDTFUNNEL CLOUD1 N River Falls, WIAT HWY 35 CO RD U. A TRAINED SPOTTER ALSO REPORTED FUNNEL AT COUNTY TRUNK M AND APOLLO RD.
Jul 14, 2:59 PM CDTTSTM WND DMG2 Nnw Ellsworth, WIBEGINNING OF A DAMAGE SWATH TO THE EAST NORTHEAST. DAMAGE INLUCDED STRUCTURAL DAMAGE TO HOUSES AND BARNS...AS WELL AS MANY TREES SNAPPED. TIME ESTIMATED.
Jul 14, 3:00 PM CDTTSTM WND DMGWoodville, WITREE LIMBS IN EXCESS OF 4 INCHES DOWN
Jul 14, 3:06 PM CDTTORNADO6 Sse Martel, WITORNADO RATED EF-2 ON THE GROUND FOR APPROXIMATELY 5 MILES. IT TOUCHED DOWN JUST SOUTH OF EL PASO AND MOVED NORTHEAST... DISSIPATING 1.5 MILES SOUTHWEST OF SPRING VALLEY. BARNS AND SHEDS DESTROYED. NUMEROUS TREES SNAPPED OR BROKEN.
Jul 14, 3:07 PM CDTTSTM WND DMG1 S Martel, WIHOUSE HEAVILY DAMAGED. TIME ESTIMATED.
Jul 14, 3:20 PM CDTTSTM WND DMGBaldwin, WI2 SEMI TRAILERS BLOWN OFF ROAD NEAR BALDWIN. INJURIES REPORTED. TREES ALSO DOWN IN AREA.
Jul 14, 3:20 PM CDTTSTM WND DMGSpring Valley, WINUMEROUS TREES DOWN FROM SPRING VALLEY EAST TO THE DUNN CO BORDER

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 14, 9:00 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 7.8 hours before the alert went out and 92 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 2010-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2915 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, Minneapolis, MN at 12:00Z on 2010-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 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
2915 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
616 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
379 m²/s²
Significant tornado parameter
0.0
Supercell composite
16.3

Open this sounding in Storm Lab

The text

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

672 
WFUS53 KMPX 141946
TORMPX
WIC033-093-109-142030-
/O.NEW.KMPX.TO.W.0060.100714T1946Z-100714T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
246 PM CDT WED JUL 14 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  EXTREME SOUTHWESTERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 330 PM CDT

* AT 241 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 6 MILES SOUTHWEST
  OF RIVER FALLS...OR ABOUT 5 MILES NORTHEAST OF PRESCOTT...AND      
  MOVING EAST AT 35 MPH. LAW ENFORCEMENT REPORTED A ROTATING WALL    
  CLOUD NEAR ROBERTS WISCONSIN AT 245 PM.

* LOCATIONS IN THE WARNING INCLUDE...
  RIVER FALLS...
  ELLSWORTH...
  BURKHARDT...
  BELDENVILLE...
  ROBERTS...
  MARTEL...
  HAMMOND...
  BALDWIN...
  WOODVILLE...
  SPRING VALLEY...
  ELMWOOD...
  HERSEY...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT WEDNESDAY
AFTERNOON FOR SOUTHERN MINNESOTA AND NORTHWESTERN WISCONSIN.

&&

LAT...LON 4468 9212 4469 9270 4472 9275 4502 9276
      4509 9213
TIME...MOT...LOC 1946Z 255DEG 29KT 4480 9264

$$
4 follow-up statements
045 
WWUS53 KMPX 141959
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
259 PM CDT WED JUL 14 2010

WIC033-093-109-142030-
/O.CON.KMPX.TO.W.0060.000000T0000Z-100714T2030Z/
ST. CROIX WI-DUNN WI-PIERCE WI-
259 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN PIERCE...EXTREME
SOUTHWESTERN DUNN AND SOUTHERN ST. CROIX COUNTIES UNTIL 330 PM CDT...

AT 254 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR BELDENVILLE...OR 5 MILES NORTHWEST OF ELLSWORTH...
MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  ELLSWORTH...BELDENVILLE...HAMMOND...MARTEL...BALDWIN...WOODVILLE...
  SPRING VALLEY...HERSEY...GLENWOOD CITY...WILSON AND ELMWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4468 9212 4469 9270 4472 9275 4502 9276
      4509 9213
TIME...MOT...LOC 1958Z 277DEG 28KT 4477 9253

$$

JLT
781 
WWUS53 KMPX 142005
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
305 PM CDT WED JUL 14 2010

WIC033-093-109-142030-
/O.CON.KMPX.TO.W.0060.000000T0000Z-100714T2030Z/
ST. CROIX WI-DUNN WI-PIERCE WI-
305 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN PIERCE...EXTREME
SOUTHWESTERN DUNN AND SOUTHEASTERN ST. CROIX COUNTIES UNTIL 330 PM
CDT...

AT 259 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR BELDENVILLE...OR NEAR ELLSWORTH...MOVING EAST AT 35
MPH.

AT 255 PM CDT...A ROTATING WALL CLOUD WAS REPORTED NEAR RIVER FALLS. 

LOCATIONS IMPACTED INCLUDE...
  MARTEL...BALDWIN...WOODVILLE...SPRING VALLEY...HERSEY...GLENWOOD
  CITY...WILSON AND ELMWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4504 9256 4509 9213 4468 9212 4469 9267
TIME...MOT...LOC 2004Z 274DEG 31KT 4477 9243

$$
046 
WWUS53 KMPX 142015
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
315 PM CDT WED JUL 14 2010

WIC033-093-109-142030-
/O.CON.KMPX.TO.W.0060.000000T0000Z-100714T2030Z/
ST. CROIX WI-DUNN WI-PIERCE WI-
315 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN PIERCE...
EXTREME SOUTHWESTERN DUNN AND SOUTHEASTERN ST. CROIX COUNTIES UNTIL
330 PM CDT...

AT 313 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO.  THESE DANGEROUS
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM EMERALD TO 6 MILES
NORTHEAST OF ESDAILE...MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPRING VALLEY...HERSEY...GLENWOOD CITY...WILSON AND ELMWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

INTENSE SQUALL LINES CAN OCCASSIONALY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 4506 9239 4509 9213 4468 9212 4469 9248
TIME...MOT...LOC 2015Z 263DEG 41KT 4507 9226 4469 9234

$$
954 
WWUS53 KMPX 142028
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
328 PM CDT WED JUL 14 2010

WIC033-093-109-142037-
/O.EXP.KMPX.TO.W.0060.000000T0000Z-100714T2030Z/
ST. CROIX WI-DUNN WI-PIERCE WI-
328 PM CDT WED JUL 14 2010

...THE TORNADO WARNING FOR NORTHEASTERN PIERCE...EXTREME SOUTHWESTERN
DUNN AND SOUTHEASTERN ST. CROIX COUNTIES WILL EXPIRE AT 330 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND MOVED
OUT OF THE WARNED AREA. HOWEVER...VERY STRONG WINDS MAY STILL BE 
OCCURRING OVER THE EASTERN PARTS OF ST. CROIX AND PIERCE COUNTIES.  

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

LAT...LON 4506 9239 4509 9213 4468 9212 4469 9248
TIME...MOT...LOC 2027Z 263DEG 41KT 4508 9206 4470 9215

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 3:12 AM CDTHeat AdvisoryMPXChippewa, Dunn, Eau Claire, Pepin, Pierce, Saint Croix15 hr
Jul 14, 9:49 AM CDTSpecial Weather StatementMPXPolk41 min
Jul 14, 10:23 AM CDTSevere Thunderstorm WarningMPXBarron, Polk52 min
Jul 14, 10:42 AM CDTTornado WarningMPXBarron, Polk33 min
Jul 14, 11:10 AM CDTSevere Thunderstorm WarningMPXBarron, Rusk65 min
Jul 14, 11:18 AM CDTSevere Thunderstorm WarningMPXChippewa, Dunn57 min
Jul 14, 12:12 PM CDTSevere Thunderstorm WarningMPXChippewa, Rusk63 min
Jul 14, 1:37 PM CDTAreal Flood AdvisoryMPXBarron, Polk3 hr
Jul 14, 1:43 PM CDTSevere Thunderstorm WarningMPXPolk47 min
Jul 14, 2:23 PM CDTSevere Thunderstorm WarningMPXBarron, Polk67 min
Jul 14, 2:33 PM CDTSevere Thunderstorm WarningMPXPierce, Saint Croix44 min
Jul 14, 2:55 PM CDTSevere Thunderstorm WarningMPXPepin, Pierce65 min
Jul 14, 3:12 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire, Pepin63 min
Jul 14, 3:52 PM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire53 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.