Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS La Crosse, WI

July 25, 2012Richland County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jul 25, 2012, 11:45 PM CDT for Richland County, Wisconsin. It was in force for 30 min. 3 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 25, 2012, 11:45 PM CDT (04:45 UTC)
Expired: Jul 26, 2012, 12:15 AM CDT
In force: 30 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Richland County, WI

The radar

The La Crosse radar (KARX), 91 km from the middle of the area, began a volume at 04:47 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
Jul 25, 11:52 PM CDT	TSTM WND DMG	4 Sw Sextonville, WI	6 INCH DIAMETER TREE AND SEVERAL BRANCHES DOWN ALONG RIVERVIEW RIDGE DRIVE.
Jul 25, 11:55 PM CDT	TSTM WND DMG	Sextonville, WI	TREES DOWN ACROSS TOWN
Jul 26, 12:01 AM CDT	TSTM WND GST 54	Gotham, WI

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
Jul 25, 5:16 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.8 hours before the alert went out and 179 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: -149 J/kg
Mixed-layer LCL: 2702 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

989 
WUUS53 KARX 260445
SVRARX
WIC103-260515-
/O.NEW.KARX.SV.W.0080.120726T0445Z-120726T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
1145 PM CDT WED JUL 25 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN RICHLAND COUNTY IN SOUTHWEST WISCONSIN...

* UNTIL 1215 AM CDT

* AT 1140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED NEAR PORT ANDREW...OR 15 MILES
  SOUTHWEST OF RICHLAND CENTER...MOVING NORTHEAST AT 35 MPH. THIS    
  STORM CAN PRODUCE DAMAGING WINDS AND QUARTER SIZE HAIL IN EXCESS   
  OF 60 MPH. LOCAL LAW ENFORCEMENT OFFICIALS HAVE ALREADY REPORTED   
  WINDS OF 60 MPH WITH THIS STORM. STAY INSIDE UNTIL THE STORM       
  PASSES. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BASSWOOD AND HIGHWAY 80 AND COUNTY Y AROUND 1150 PM...
  COUNTY ROADS Z Z AND Q AND COUNTY ROADS O AND O O AROUND 1155 PM...
  RICHLAND CENTER AND HIGHWAYS 80 AND 56 AROUND MIDNIGHT...
  NEPTUNE AND HIGHWAYS 58 AND 154 AROUND 1205 AM...
  COUNTY ROADS D AND N N AND LOYD AROUND 1210 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.

&&

LAT...LON 4318 9023 4321 9033 4320 9042 4321 9054
      4318 9061 4319 9067 4330 9066 4348 9019
      4318 9019
TIME...MOT...LOC 0443Z 217DEG 38KT 4322 9054
WIND...HAIL 60MPH 1.00IN

$$

ZT

3 follow-up statements

766 
WWUS53 KARX 260459
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1159 PM CDT WED JUL 25 2012

WIC103-260515-
/O.CON.KARX.SV.W.0080.000000T0000Z-120726T0515Z/
RICHLAND WI-
1159 PM CDT WED JUL 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
RICHLAND COUNTY UNTIL 1215 AM CDT...

TRAINED WEATHER SPOTTERS REPORTED TREES DOWN IN SEXTONVILLE AT 1155 
PM WITH THIS SEVERE THUNDERSTORM. THE DAMAGING WIND THREAT WILL 
CONTINUE ACROSS THE SOUTHEAST PORTIONS OF RICHLAND COUNTY.

AT 1152 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR TWIN BLUFFS...OR 6 MILES
SOUTHEAST OF RICHLAND CENTER...MOVING NORTHEAST AT 35 MPH. THIS STORM
CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHWAY 58 AND COUNTY K AROUND 1205 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM THURSDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHWEST WISCONSIN.

&&

LAT...LON 4318 9023 4321 9033 4320 9042 4321 9054
      4320 9055 4320 9058 4318 9061 4319 9066
      4330 9066 4348 9019 4318 9019
TIME...MOT...LOC 0457Z 234DEG 44KT 4330 9023
WIND...HAIL 60MPH 1.00IN

$$

ZT

661 
WWUS53 KARX 260505
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1205 AM CDT THU JUL 26 2012

WIC103-260515-
/O.CON.KARX.SV.W.0080.000000T0000Z-120726T0515Z/
RICHLAND WI-
1205 AM CDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
RICHLAND COUNTY UNTIL 1215 AM CDT...

AT 1201 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR BEAR VALLEY...OR 9 MILES EAST OF 
RICHLAND CENTER...MOVING NORTHEAST AT 35 MPH. THIS STORM HAS A 
HISTORY OF PRODUCING DAMAGING WINDS...WITH A MESAURED REPORT OF 54 
IN GOTHAM AT 1201 AM. THERE IS GOING TO BE DOWNED TREES AND POWER 
LINES WITH THIS STORM. STAY INSIDE UNTIL IT PASSES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHWAY 58 AND COUNTY K AROUND 1210 AM...
  BEAR VALLEY AROUND 1210 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM THURSDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHWEST WISCONSIN.

&&

LAT...LON 4318 9023 4321 9033 4320 9042 4321 9054
      4320 9055 4320 9058 4318 9061 4319 9066
      4330 9066 4348 9019 4318 9019
TIME...MOT...LOC 0504Z 234DEG 34KT 4333 9019
WIND...HAIL 60MPH <.50IN

$$

ZT

578 
WWUS53 KARX 260510
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1210 AM CDT THU JUL 26 2012

WIC103-260520-
/O.EXP.KARX.SV.W.0080.000000T0000Z-120726T0515Z/
RICHLAND WI-
1210 AM CDT THU JUL 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN RICHLAND COUNTY WILL
EXPIRE AT 1215 AM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. BRIEF HEAVY RAIN AND FREQUENT LIGHTNING WILL CONTINUE FOR 
ANOTHER 30 MINUTES HOWEVER.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT
THURSDAY MORNING FOR NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

LAT...LON 4318 9023 4321 9033 4320 9042 4321 9054
      4320 9055 4320 9058 4318 9061 4319 9066
      4330 9066 4348 9019 4318 9019
TIME...MOT...LOC 0510Z 234DEG 34KT 4336 9012

$$

ZT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 9:03 PM CDT	Severe Thunderstorm Warning	ARX	Grant	57 min
Jul 25, 10:49 PM CDT	Severe Thunderstorm Warning	ARX	Grant	56 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.