Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 314, NWS Twin Cities, MN

August 13, 2007Dunn County, Pepin County, Pierce County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 13, 2007, 10:00 PM CDT for Dunn County, Pepin County, Pierce County, Wisconsin. It was in force for 60 min. 5 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: Aug 13, 2007, 10:00 PM CDT (03:00 UTC)
Expired: Aug 13, 2007, 11:00 PM CDT
In force: 60 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Dunn County, WI, Pepin County, WI, Pierce County, WI

The radar

The Minneapolis radar (KMPX), 117 km from the middle of the area, began a volume at 03:02 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

Time	Report	Where	Remark
Aug 13, 10:45 PM CDT	TSTM WND DMG	10 Se Boyceville, WI	3 INCH LIVE PINE BRANCHES BROKEN. TIME ESTIMATED.
Aug 13, 10:45 PM CDT	TSTM WND DMG	5 N Menomonie, WI	TWO 12 INCH PINE TREES DOWNED. TIME ESTIMATED.
Aug 13, 10:47 PM CDT	TSTM WND DMG	Menomonie, WI	LARGE 4 INCH BRANCHES DOWN AT INTERSECTION OF 29TH AND 21ST ST.
Aug 13, 10:50 PM CDT	TSTM WND DMG	Menomonie, WI	POWERLINES AND STREET LIGHTS DOWN. AT 1047PM 4 INCH DIAMETER TREE BRANCHES DOWN.
Aug 13, 10:59 PM CDT	TSTM WND DMG	Durand, WI	DOORS BLOWN OFF BUILDING.

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.

Issued	Product	Office	Lasted
Aug 13, 6:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.0 hours before the alert went out and 119 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2096 J/kg
Mixed-layer CIN: -245 J/kg
Mixed-layer LCL: 1133 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 409 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 140300
SVRMPX
WIC033-091-093-140400-
/O.NEW.KMPX.SV.W.0314.070814T0300Z-070814T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1000 PM CDT MON AUG 13 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  PIERCE COUNTY IN WEST CENTRAL WISCONSIN...
  PEPIN COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 1100 PM CDT

* AT 958 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM 13 MILES NORTH OF BOYCEVILLE TO 12
  MILES NORTHWEST OF ELMWOOD TO 9 MILES NORTHWEST OF ELLSWORTH...AND
  MOVING SOUTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOYCEVILLE...
  ELLSWORTH...
  ELMWOOD...
  MENOMONIE...
  PLUM CITY...
  COLFAX...
  DURAND...
  ELK MOUND...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4520 9212 4485 9215 4482 9279 4447 9217
      4461 9200 4461 9169 4519 9166

$$

JPR

2 follow-up statements

000 
WWUS53 KMPX 140327
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1025 PM CDT MON AUG 13 2007

WIC033-091-093-140400-
/O.CON.KMPX.SV.W.0314.000000T0000Z-070814T0400Z/
DUNN WI-PIERCE WI-PEPIN WI-
1025 PM CDT MON AUG 13 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR PEPIN...PIERCE AND DUNN COUNTIES...

AT 1023 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING GOLF BALL SIZE HAIL AND DESTRUCTIVE
WINDS IN EXCESS OF 75 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM COLFAX...TO 4 MILES NORTHEAST OF EAU GALLE...TO 7 MILES NORTH OF 
MAIDEN ROCK...AND MOVING SOUTHEAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SAND CREEK...ROCK FALLS...
PORCUPINE...MARTEL...EAU GALLE...CONNORSVILLE...CARYVILLE...
BELDENVILLE...ARKANSAW AND WHEELER.

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS
ST CROIX COUNTY...NEAR NEW RICHMOND. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS

LAT...LON 4520 9212 4485 9215 4482 9279 4447 9217
      4461 9200 4461 9169 4519 9166

$$
AJZ

000 
WWUS53 KMPX 140357
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1055 PM CDT MON AUG 13 2007

WIC033-091-093-140405-
/O.EXP.KMPX.SV.W.0314.000000T0000Z-070814T0400Z/
DUNN WI-PIERCE WI-PEPIN WI-
1055 PM CDT MON AUG 13 2007

...THE SEVERE THUNDERSTORM WARNING FOR PEPIN...PIERCE AND DUNN
COUNTIES EXPIRES AT 1100 PM CDT...

AT 1047 PM A TRAINED SPOTTER REPORTED 4 INCH BRANCHES DOWN ON
THE EAST SIDE OF MENOMONIE. ALTHOUGH THE STRONGEST WINDS HAVE
EXITED DUNN...PIERCE...AND PEPIN COUNTIES...WINDS TO 50 MPH...AND HAIL
UP TO BUT NOT INCLUDING DIME SIZE IS STILL POSSIBLE OVER PEPIN
COUNTY. 

LAT...LON 4520 9212 4485 9215 4482 9279 4447 9217
      4461 9200 4461 9169 4519 9166

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 9:15 PM CDT	Severe Thunderstorm Warning	MPX	Polk, Saint Croix	60 min
Aug 13, 10:15 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	30 min
Aug 13, 10:21 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire	54 min
Aug 13, 11:10 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	31 min
Aug 13, 11:30 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	60 min
Aug 13, 11:37 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	53 min
Aug 14, 12:05 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin	55 min
Aug 14, 12:29 AM CDT	Severe Thunderstorm Warning	MPX	Pierce	48 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2007 Every severe thunderstorm warning in 2007

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.