Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 37, NWS La Crosse, WI

May 24, 2012Buffalo County, Jackson County, Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at May 24, 2012, 4:46 PM CDT for Buffalo County, Jackson County, Trempealeau County, Wisconsin. It was in force for 29 min. 2 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: May 24, 2012, 4:46 PM CDT (21:46 UTC)
Expired: May 24, 2012, 5:15 PM CDT
In force: 29 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Buffalo County, WI, Jackson County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 72 km from the middle of the area, began a volume at 21:46 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
May 24, 4:48 PM CDT	TSTM WND DMG	Arcadia, WI	SEVERAL TREES BLOWN DOWN
May 24, 5:03 PM CDT	TSTM WND GST 60	Pleasantville, WI	MARBLE SIZED HAIL ALSO.

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
May 24, 2:22 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.8 hours before the alert went out and 182 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: 13 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 6 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.

656 
WUUS53 KARX 242146
SVRARX
WIC011-053-121-242215-
/O.NEW.KARX.SV.W.0037.120524T2146Z-120524T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
446 PM CDT THU MAY 24 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BUFFALO COUNTY IN WEST CENTRAL WISCONSIN...
  EXTREME NORTHWESTERN JACKSON COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHERN TREMPEALEAU COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 515 PM CDT

* AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED NEAR WICKHAM VALLEY...OR NEAR
  ARCADIA...MOVING NORTHEAST AT 65 MPH. THIS STORM CAN PRODUCE NICKEL
  SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.  

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHIMNEY ROCK AROUND 450 PM...
  STRUM AND PLEASANTVILLE AROUND 455 PM...
  OSSEO AND HIGHWAY 53 AND COUNTY E AROUND 500 PM...
  REQUA AROUND 505 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR SMALL
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.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO QUICKLY.
MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

&&

LAT...LON 4460 9105 4423 9145 4433 9165 4437 9163
      4460 9141
TIME...MOT...LOC 2146Z 216DEG 59KT 4438 9145
WIND...HAIL 60MPH 0.88IN

$$

DTJ

2 follow-up statements

250 
WWUS53 KARX 242202
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
502 PM CDT THU MAY 24 2012

WIC011-053-121-242215-
/O.CON.KARX.SV.W.0037.000000T0000Z-120524T2215Z/
BUFFALO WI-JACKSON WI-TREMPEALEAU WI-
502 PM CDT THU MAY 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
TREMPEALEAU...EXTREME NORTHWESTERN JACKSON AND EAST CENTRAL BUFFALO
COUNTIES UNTIL 515 PM CDT...

AT 448 PM...TRAINED WEATHER SPOTTERS REPORTED TREES BLOWN DOWN IN 
THE CITY OF ARCADIA.

AT 500 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR OSSEO...OR 14 MILES NORTH OF
WHITEHALL...MOVING NORTHEAST AT 60 MPH. THIS STORM CAN PRODUCE NICKEL
SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND SMALL HAIL. 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.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO QUICKLY.
MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

&&

LAT...LON 4460 9105 4423 9145 4433 9165 4437 9163
      4460 9141
TIME...MOT...LOC 2202Z 216DEG 59KT 4459 9122
WIND...HAIL 60MPH <.50IN

$$

DTJ

537 
WWUS53 KARX 242212
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
512 PM CDT THU MAY 24 2012

WIC011-053-121-242221-
/O.EXP.KARX.SV.W.0037.000000T0000Z-120524T2215Z/
BUFFALO WI-JACKSON WI-TREMPEALEAU WI-
512 PM CDT THU MAY 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN TREMPEALEAU...EXTREME
NORTHWESTERN JACKSON AND EAST CENTRAL BUFFALO COUNTIES WILL EXPIRE AT
515 PM CDT...

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

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
PORTIONS OF SOUTHEASTERN TREMPEALEAU COUNTY.

A TORNADO WATCH REMAINS IN EFFECT. CONDITIONS REMAIN FAVORABLE FOR
ADDITIONAL SEVERE THUNDERSTORMS TO DEVELOP THAT MAY PRODUCE
TORNADOES.

LAT...LON 4460 9105 4423 9145 4433 9165 4437 9163
      4460 9141
TIME...MOT...LOC 2211Z 217DEG 56KT 4465 9113

$$

DTJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 3:11 AM CDT	Wind Advisory	ARX	Adams, Clark, Crawford, Grant, Jackson, Juneau and 6 more	16 hr
May 24, 4:27 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	33 min
May 24, 5:00 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, La Crosse, Trempealeau	35 min
May 24, 5:16 PM CDT	Severe Thunderstorm Warning	ARX	Taylor	29 min
May 24, 5:26 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	49 min
May 24, 5:36 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	39 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.