Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 101, NWS La Crosse, WI

September 3, 2011Crawford County, Grant County, Richland County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Sep 3, 2011, 1:55 AM CDT for Crawford County, Grant County, Richland County, Wisconsin. It was in force for 50 min. 1 report 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: Sep 3, 2011, 1:55 AM CDT (06:55 UTC)
Expired: Sep 3, 2011, 2:45 AM CDT
In force: 50 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Crawford County, WI, Grant County, WI, Richland County, WI

The radar

The La Crosse radar (KARX), 111 km from the middle of the area, began a volume at 06:55 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
Sep 3, 2:30 AM CDT	TSTM WND DMG	2 S Platteville, WI	LARGE TREE DOWN ON COUNTY ROAD D SOUTH OF PLATTEVILLE.

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
Sep 3, 12:48 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 6.9 hours before the alert went out and 144 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: 1861 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1596 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

723 
WUUS53 KARX 030655
SVRARX
WIC023-043-103-030745-
/O.NEW.KARX.SV.W.0101.110903T0655Z-110903T0745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
155 AM CDT SAT SEP 3 2011

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CRAWFORD COUNTY IN SOUTHWEST WISCONSIN...
  GRANT COUNTY IN SOUTHWEST WISCONSIN...
  RICHLAND COUNTY IN SOUTHWEST WISCONSIN...

* UNTIL 245 AM CDT

* AT 151 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM BOSCOBEL
  TO FENNIMORE TO SHERRILL...MOVING EAST AT 45 MPH. THESE STORMS CAN
  PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
  TRAINED WEATHER SPOTTERS HAVE ALREADY REPORTED WINDS OF 60 MPH WITH
  THESE STORMS.  THIS WARNING EXTENDS THE PREVIOUS SEVERE
  THUNDERSTORM WARNING FOR CRAWFORD...GRANT AND RICHLAND COUNTIES.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  DICKEYVILLE AROUND 205 AM...
  MUSCODA AROUND 210 AM...
  PLATTEVILLE AND HAZEL GREEN AROUND 215 AM...
  RICHLAND CENTER AROUND 220 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4264 9072 4268 9095 4275 9107 4286 9110
      4328 9094 4350 9019 4317 9018 4321 9033
      4319 9042 4251 9042 4250 9063
TIME...MOT...LOC 0655Z 250DEG 38KT 4325 9070 4301 9052
          4263 9075
WIND...HAIL 60MPH 1.00IN

$$

HALBACH

3 follow-up statements

073 
WWUS53 KARX 030709
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
209 AM CDT SAT SEP 3 2011

WIC023-043-103-030745-
/O.CON.KARX.SV.W.0101.000000T0000Z-110903T0745Z/
CRAWFORD WI-GRANT WI-RICHLAND WI-
209 AM CDT SAT SEP 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
RICHLAND...GRANT AND EAST CENTRAL CRAWFORD COUNTIES UNTIL 245 AM
CDT...

AT 205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM MUSCODA TO
FENNIMORE TO DICKEYVILLE...MOVING EAST AT 45 MPH. THESE STORMS CAN
PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  HAZEL GREEN AROUND 215 AM...
  RICHLAND CENTER AND PLATTEVILLE AROUND 220 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM SATURDAY
MORNING FOR NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

&&

LAT...LON 4264 9072 4267 9090 4332 9076 4350 9019
      4318 9018 4321 9033 4319 9042 4251 9042
      4251 9063
TIME...MOT...LOC 0709Z 250DEG 38KT 4330 9051 4302 9047
          4264 9063
WIND...HAIL 60MPH <.50IN

$$

HALBACH

479 
WWUS53 KARX 030723
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
223 AM CDT SAT SEP 3 2011

WIC023-030733-
/O.CAN.KARX.SV.W.0101.000000T0000Z-110903T0745Z/
CRAWFORD WI-
223 AM CDT SAT SEP 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CRAWFORD COUNTY
IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
SATURDAY MORNING FOR NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

LAT...LON 4264 9072 4329 9058 4350 9019 4318 9018
      4321 9033 4319 9042 4251 9042 4251 9063
TIME...MOT...LOC 0723Z 253DEG 34KT 4327 9034 4259 9054

$$

WIC043-103-030745-
/O.CON.KARX.SV.W.0101.000000T0000Z-110903T0745Z/
GRANT WI-RICHLAND WI-
223 AM CDT SAT SEP 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
RICHLAND AND EASTERN GRANT COUNTIES UNTIL 245 AM CDT...

AT 218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM MUSCODA TO
DICKEYVILLE...MOVING EAST AT 40 MPH. THESE STORMS CAN PRODUCE
DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  CUBA CITY AROUND 230 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM SATURDAY
MORNING FOR NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

&&

LAT...LON 4264 9072 4329 9058 4350 9019 4318 9018
      4321 9033 4319 9042 4251 9042 4251 9063
TIME...MOT...LOC 0723Z 253DEG 34KT 4327 9034 4259 9054
WIND...HAIL 60MPH <.50IN

$$

HALBACH

058 
WWUS53 KARX 030735
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
235 AM CDT SAT SEP 3 2011

WIC043-103-030745-
/O.EXP.KARX.SV.W.0101.000000T0000Z-110903T0745Z/
GRANT WI-RICHLAND WI-
235 AM CDT SAT SEP 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN RICHLAND AND EASTERN
GRANT COUNTIES WILL EXPIRE AT 245 AM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
SATURDAY MORNING FOR NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

LAT...LON 4264 9072 4329 9058 4350 9019 4318 9018
      4321 9033 4319 9042 4251 9042 4251 9063
TIME...MOT...LOC 0735Z 253DEG 34KT 4330 9019 4262 9039

$$

HALBACH

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 12:54 AM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant, Richland	66 min
Sep 3, 2:53 AM CDT	Flash Flood Warning	ARX	Grant	3 hr
Sep 3, 7:55 AM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.