Alert archive / Wisconsin / Tornado Warnings in 2010

Tornado Warning 8, NWS La Crosse, WI

July 14, 2010Clark County, Jackson County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jul 14, 2010, 4:20 PM CDT for Clark County, Jackson County, Wisconsin. It was in force for 25 min. 4 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 14, 2010, 4:20 PM CDT (21:20 UTC)
Expired: Jul 14, 2010, 4:45 PM CDT
In force: 25 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon

Counties Clark County, WI, Jackson County, WI

The radar

The La Crosse radar (KARX), 86 km from the middle of the area, began a volume at 21:23 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 14, 4:25 PM CDT	TORNADO	4 Nw Alma Center, WI	FIRST EVIDENCE OF TREE DAMAGE WAS NOTED ALONG TOWN HOUSE ROAD. DAMAGE INTERMITTENTLY CONTINUED EAST SOUTHEAST THROUGH THE VILLAGE OF MERRILLAN. ALL THIS DAMAGE WAS EF0. THE TORNADO INCREASED IN INTENSITY AS IT CROSSED INTO SOUTHERN CLARK COUNTY NEAR BRUCE MOUN
Jul 14, 4:40 PM CDT	TSTM WND DMG	3 E Levis, WI	NUMEROUS TREES AND POWER LINES DOWN ACROSS NORTHERN JACKSON COUNTY
Jul 14, 4:46 PM CDT	TSTM WND DMG	Humbird, WI	SEVERAL TREES DOWN. WINDS ESTIMATED AT 60-70 MPH.
Jul 14, 4:50 PM CDT	TSTM WND DMG	Bruce Mound, WI	TREES DOWN AT HIGHWAY 95

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 14, 11:43 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.3 hours before the alert went out and 215 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1516 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 67 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.

157 
WFUS53 KARX 142120
TORARX
WIC019-053-142145-
/O.NEW.KARX.TO.W.0008.100714T2120Z-100714T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
420 PM CDT WED JUL 14 2010

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN CLARK COUNTY IN CENTRAL WISCONSIN...
  NORTHERN JACKSON COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 445 PM CDT

* AT 415 PM CDT...SPOTTER REPORTED A TORNADO ON THE GROUND JUST   
  SOUTHEAST OF OSSEO.  THIS TORNADO WAS MOVING EAST AT 50 MPH. 

* THE TORNADO WILL BE NEAR...
  HUMBIRD AROUND 425 PM...
  NEILLSVILLE AROUND 440 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM WEDNESDAY EVENING FOR
NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN.

&&

LAT...LON 4442 9116 4459 9115 4460 9107 4460 9094
      4463 9093 4474 9031 4458 9030 4438 9031
TIME...MOT...LOC 2117Z 260DEG 43KT 4451 9106

$$

BOYNE

2 follow-up statements

340 
WWUS53 KARX 142128
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
428 PM CDT WED JUL 14 2010

WIC019-053-142145-
/O.CON.KARX.TO.W.0008.000000T0000Z-100714T2145Z/
CLARK WI-JACKSON WI-
428 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN JACKSON AND 
SOUTHERN CLARK COUNTIES UNTIL 445 PM CDT...

AT 427 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
TORNADO WAS LOCATED NEAR I 94 EXIT 98...OR 16 MILES NORTHEAST OF
WHITEHALL...MOVING EAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  HUMBIRD AROUND 435 PM...
  NEILLSVILLE AROUND 445 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

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 4442 9116 4459 9115 4460 9107 4460 9094
      4463 9093 4474 9031 4458 9030 4438 9031
TIME...MOT...LOC 2127Z 262DEG 32KT 4450 9100

$$

BOYNE

749 
WWUS53 KARX 142134
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
434 PM CDT WED JUL 14 2010

WIC019-053-142145-
/O.CON.KARX.TO.W.0008.000000T0000Z-100714T2145Z/
CLARK WI-JACKSON WI-
434 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN JACKSON AND
SOUTHERN CLARK COUNTIES UNTIL 445 PM CDT...

AT 432 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
TORNADO WAS LOCATED NEAR HUMBIRD...OR 14 MILES NORTH OF BLACK RIVER 
FALLS...MOVING EAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  MERRILLAN AROUND 440 PM...
  NEILLSVILLE AROUND 445 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

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 4442 9116 4459 9115 4460 9107 4460 9094
      4463 9093 4474 9031 4458 9030 4438 9031
TIME...MOT...LOC 2134Z 266DEG 32KT 4449 9091

$$

BOYNE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 3:07 AM CDT	Heat Advisory	ARX	Buffalo, Crawford, Grant, Jackson, La Crosse, Monroe and 3 more	16 hr
Jul 14, 11:58 AM CDT	Severe Thunderstorm Warning	ARX	Taylor	92 min
Jul 14, 12:28 PM CDT	Severe Thunderstorm Warning	ARX	Clark	62 min
Jul 14, 3:34 PM CDT	Flash Flood Warning	ARX	Taylor	3 hr
Jul 14, 3:41 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	49 min
Jul 14, 4:06 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson, Taylor	54 min
Jul 14, 4:16 PM CDT	Severe Thunderstorm Warning	ARX	Trempealeau	44 min
Jul 14, 4:43 PM CDT	Tornado Warning	ARX	Clark, Jackson	37 min
Jul 14, 4:52 PM CDT	Severe Thunderstorm Warning	ARX	Monroe	38 min
Jul 14, 5:01 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	25 min
Jul 14, 5:12 PM CDT	Tornado Warning	ARX	Monroe	33 min
Jul 14, 5:42 PM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau, Monroe	33 min
Jul 14, 6:06 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Trempealeau	13 min
Jul 14, 6:20 PM CDT	Areal Flood Advisory	ARX	Adams, Jackson, Juneau, Monroe	2 hr

Nearby

Tornado Warnings in Wisconsin, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.