Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 90, NWS La Crosse, WI

August 16, 20124 counties in Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 16, 2012, 12:29 AM CDT for 4 counties in Wisconsin. It was in force for 46 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: Aug 16, 2012, 12:29 AM CDT (05:29 UTC)
Expired: Aug 16, 2012, 1:15 AM CDT
In force: 46 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jackson County, WI, La Crosse County, WI, Monroe County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 21 km from the middle of the area, began a volume at 05:31 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 16, 12:39 AM CDT	TSTM WND DMG	3 N Holmen, WI	TREE DOWN ACROSS MOE COULEE ROAD AND COUNTY ROAD V.
Aug 16, 12:39 AM CDT	HAIL 1.5	2 N Holmen, WI
Aug 16, 12:41 AM CDT	TSTM WND DMG	2 E Holmen, WI	TREE DOWN ON A HOUSE CAUSING ROOF DAMAGE ALLOWING WATER TO ENTER THE HOUSE.
Aug 16, 12:42 AM CDT	TSTM WND DMG	Holmen, WI	POWER LINE KNOCKED DOWN FROM TREE BRANCHES BY HOLMEN POLICE DEPARTMENT. TIME ESTIMATED ON RADAR.
Aug 16, 12:44 AM CDT	TSTM WND GST 60	2 S Holmen, WI	REPORTED BY NWS EMPLOYEE
Aug 16, 12:44 AM CDT	TSTM WND GST 60	2 S Holmen, WI	REPORTED BY NWS EMPLOYEE
Aug 16, 12:44 AM CDT	HAIL 1	4 N Holmen, WI	REPORTED BY NWS EMPLOYEE
Aug 16, 12:57 AM CDT	TSTM WND DMG	2 Nnw Bangor, WI	TREE KNOCKED DOWN ON POWER LINES NEAR THE INTERSECTION OF HWY 162 AND 16 NORTH OF BANGOR. TIME ESTIMATED ON RADAR.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.5 hours before the alert went out and 213 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: 700 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1324 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

401 
WUUS53 KARX 160529
SVRARX
WIC053-063-081-121-160615-
/O.NEW.KARX.SV.W.0090.120816T0529Z-120816T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
1229 AM CDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN JACKSON COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHERN LA CROSSE COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHWESTERN MONROE COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHERN TREMPEALEAU COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 115 AM CDT

* AT 1226 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED NEAR CENTERVILLE...OR 12 MILES EAST OF
  WINONA...MOVING EAST AT 40 MPH. THIS STORM CAN PRODUCE QUARTER SIZE
  HAIL...DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRICE PRAIRIE AND COUNCIL BAY AROUND 1235 AM...
  HOLMEN AND MIDWAY AROUND 1240 AM...
  STEVENSTOWN AND CAMP EHAWEE AROUND 1245 AM...
  NORTH BEND AND MINDORO AROUND 1250 AM...
  BURR OAK AND COUNTY ROADS D E AND E AROUND 1255 AM...
  HIGHWAY 162 AND COUNTY E E AND BURNS AROUND 100 AM...
  HIGHWAY 162 AND COUNTY T AROUND 105 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.

&&

LAT...LON 4388 9087 4394 9137 4401 9145 4402 9151
      4419 9146 4416 9083
TIME...MOT...LOC 0528Z 280DEG 35KT 4406 9140
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

4 follow-up statements

057 
WWUS53 KARX 160534
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1234 AM CDT THU AUG 16 2012

WIC053-063-081-121-160615-
/O.CON.KARX.SV.W.0090.000000T0000Z-120816T0615Z/
JACKSON WI-LA CROSSE WI-MONROE WI-TREMPEALEAU WI-
1234 AM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
TREMPEALEAU...NORTHWESTERN MONROE...NORTHERN LA CROSSE AND
SOUTHWESTERN JACKSON COUNTIES UNTIL 115 AM CDT...

TRAINED WEATHER SPOTTERS REPORTED DIME SIZE HAIL AND WINDS OF 50 MPH 
IN GALESVILLE WITH A SEVERE THUNDERSTORM.

AT 1231 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR GALESVILLE...OR 15 MILES EAST OF
WINONA...MOVING EAST AT 40 MPH. THIS STORM CAN PRODUCE QUARTER SIZE
HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HOLMEN AND MIDWAY AROUND 1240 AM...
  STEVENSTOWN AND CAMP EHAWEE AROUND 1245 AM...
  NORTH BEND AND MINDORO AROUND 1250 AM...
  COUNTY ROADS D E AND E AND BURR OAK AROUND 1255 AM...
  HIGHWAY 162 AND COUNTY E E AND BURNS AROUND 100 AM...
  HIGHWAY 162 AND COUNTY T AND HIGHWAYS 27 AND 71 AROUND 105 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

&&

LAT...LON 4388 9087 4394 9137 4401 9145 4402 9151
      4419 9146 4416 9083
TIME...MOT...LOC 0533Z 280DEG 35KT 4405 9133
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

417 
WWUS53 KARX 160543
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1243 AM CDT THU AUG 16 2012

WIC053-063-081-121-160615-
/O.CON.KARX.SV.W.0090.000000T0000Z-120816T0615Z/
JACKSON WI-LA CROSSE WI-MONROE WI-TREMPEALEAU WI-
1243 AM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
TREMPEALEAU...NORTHWESTERN MONROE...NORTHERN LA CROSSE AND
SOUTHWESTERN JACKSON COUNTIES UNTIL 115 AM CDT...

TRAINED WEATHER SPOTTERS REPORTED PENNY SIZE HAIL AND WINDS OF 50 MPH
IN GALESVILLE WITH A SEVERE THUNDERSTORM.

AT 1239 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR HOLMEN...OR 12 MILES NORTH OF LA 
CRESCENT...MOVING EAST AT 45 MPH. THIS STORM CAN PRODUCE BOTH 
QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MINDORO CUT AND SEVERSON COULEE AROUND 1250 AM...
  BURNS AND HIGHWAY 162 AND COUNTY E E AROUND 1255 AM...
  ROCKLAND AND HIGHWAYS 27 AND 71 AROUND 100 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

&&

LAT...LON 4403 9138 4418 9136 4416 9083 4388 9087
      4394 9137
TIME...MOT...LOC 0543Z 286DEG 39KT 4398 9118
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

940 
WWUS53 KARX 160548
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1248 AM CDT THU AUG 16 2012

WIC053-063-081-121-160615-
/O.CON.KARX.SV.W.0090.000000T0000Z-120816T0615Z/
JACKSON WI-LA CROSSE WI-MONROE WI-TREMPEALEAU WI-
1248 AM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
TREMPEALEAU...NORTHWESTERN MONROE...NORTHERN LA CROSSE AND
SOUTHWESTERN JACKSON COUNTIES UNTIL 115 AM CDT...

TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZE HAIL ALONG WITH WINDS 
OF 60 MPH IN HOLMEN WITH A SEVERE THUNDERSTORM.

AT 1244 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR COUNTY ROADS M AND W...OR 12
MILES NORTHEAST OF LA CRESCENT...MOVING EAST AT 40 MPH. THIS STORM
CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COUNTY ROADS D E AND E AND LAKE NESHONOC AROUND 1255 AM...
  BURNS AND HIGHWAY 162 AND COUNTY E E AROUND 100 AM...
  ROCKLAND AND HIGHWAYS 27 AND 71 AROUND 105 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

&&

LAT...LON 4403 9138 4418 9136 4416 9083 4388 9087
      4394 9137
TIME...MOT...LOC 0548Z 286DEG 35KT 4396 9112
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

557 
WWUS53 KARX 160555
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1255 AM CDT THU AUG 16 2012

WIC053-121-160604-
/O.CAN.KARX.SV.W.0090.000000T0000Z-120816T0615Z/
JACKSON WI-TREMPEALEAU WI-
1255 AM CDT THU AUG 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TREMPEALEAU AND
SOUTHWESTERN JACKSON COUNTIES IS CANCELLED...

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

LAT...LON 4402 9122 4407 9116 4408 9085 4388 9087
      4393 9125
TIME...MOT...LOC 0554Z 286DEG 35KT 4395 9104

$$

WIC063-081-160615-
/O.CON.KARX.SV.W.0090.000000T0000Z-120816T0615Z/
LA CROSSE WI-MONROE WI-
1255 AM CDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
MONROE AND NORTHERN LA CROSSE COUNTIES UNTIL 115 AM CDT...

TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZE HAIL WITH WINDS OF 60 
MPH IN HOLMEN WITH A SEVERE THUNDERSTORM. 

AT 1252 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR MINDORO CUT...OR 13 MILES WEST 
OF SPARTA...MOVING EAST AT 40 MPH. THIS STORM HAS A HISTORY OF 
PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BURNS AND HIGHWAY 162 AND COUNTY E E AROUND 100 AM...
  ROCKLAND AND HIGHWAYS 27 AND 71 AROUND 105 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL FROM THESE STORMS MAY ALSO CAUSE THE PONDING OF
WATER ON ROADWAYS AND LOCALIZED FLOODING.

LIGHTNING AND FALLING TREES CAN KILL. CAMPING VEHICLES AND TENTS ARE
NOT SAFE DURING THUNDERSTORMS. MOVE TO A PRE-DESIGNATED SHELTER IF
AVAILABLE. IF NO STRONG SHELTER IS AVAILABLE...SEEK SHELTER IN A
DEPRESSION OR RAVINE...BUT AVOID STREAM BEDS AND DRY WASHES. ASSUME
THE LIGHTNING POSITION BY MINIMIZING YOUR HEIGHT AND CONTACT WITH THE
GROUND. CROUCH LOW AND WRAP YOUR ARMS AROUND YOUR LEGS.

&&

LAT...LON 4402 9122 4407 9116 4408 9085 4388 9087
      4393 9125
TIME...MOT...LOC 0554Z 286DEG 35KT 4395 9104
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 15, 11:37 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	38 min
Aug 16, 12:03 AM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	27 min
Aug 16, 1:08 AM CDT	Severe Thunderstorm Warning	ARX	Monroe, Vernon	37 min
Aug 16, 3:09 AM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau	36 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2012 Every severe thunderstorm warning in 2012

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.