Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 110, NWS La Crosse, WI

August 23, 2006Jackson County, Juneau County, Monroe County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 23, 2006, 8:33 PM CDT for Jackson County, Juneau County, Monroe County, Wisconsin. It was in force for 30 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: Aug 23, 2006, 8:33 PM CDT (01:33 UTC)
Expired: Aug 23, 2006, 9:03 PM CDT
In force: 30 min
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

Counties Jackson County, WI, Juneau County, WI, Monroe County, WI

The radar

The La Crosse radar (KARX), 92 km from the middle of the area, began a volume at 01:35 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 23, 8:35 PM CDT	HAIL 1	3 Nw Mather, WI

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 2 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 23, 2:32 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.6 hours before the alert went out and 165 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: 877 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KARX 240134
SVRARX
WIC053-057-081-240230-
/O.NEW.KARX.SV.W.0110.060824T0133Z-060824T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
833 PM CDT WED AUG 23 2006

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JUNEAU COUNTY IN CENTRAL WISCONSIN...
  SOUTHEAST JACKSON COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHEASTERN MONROE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 930 PM CDT

* AT 831 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
  BEAR BLUFF TOWNSHIP...OR ABOUT 16 MILES NORTHEAST OF TOMAH...AND
  MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BEAR BLUFF TOWNSHIP AND THE MEADOW VALLEY FLOWAGE AROUND 835 PM...
  NORMAY RIDGE AND MEADOW VALLEY AROUND 840 PM...
  FINLEY AROUND 845 PM...
  THE SPRAGUE MATHER FLOWAGE AND SPRAGUE AROUND 850 PM...
  THE NECEDAH WILDLIFE REFUGE AND NEW MINER AROUND 855 PM...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS AND STAY AWAY FROM WINDOWS.

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR
NO ADVANCED WARNING.

LAT...LON 4366 8986 4370 8995 4417 9047 4422 9049
      4432 9035 4432 9032 4425 9031 4424 8989
      4417 8992 4409 9003 4396 8995 4387 8996
      4376 8984 4368 8981

$$

DAS

2 follow-up statements

000 
WWUS53 KARX 240149
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
849 PM CDT WED AUG 23 2006

WIC053-057-081-240230-
/O.CON.KARX.SV.W.0110.000000T0000Z-060824T0230Z/
JACKSON WI-JUNEAU WI-MONROE WI-
849 PM CDT WED AUG 23 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT 
FOR NORTHEASTERN MONROE...NORTHEASTERN JUNEAU AND EASTERN JACKSON 
COUNTIES...

AT 835 PM...ONE INCH DIAMETER HAIL WAS REPORTED NORTHWEST OF MATHER
BY A COOPERATIVE OBSERVER. THIS STORM TRACKED OVER THE THREE COUNTY 
INTERSECTION OF JUNEAU...MONROE...AND JACKSON COUNTIES.

AT 843 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL SOUTHEAST OF MATHER. THIS STORM WAS APPROACHING THE NECEDAH 
WILDLIFE REFUGE AND SHENNINGTON AREAS OF JUNEAU COUNTY.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  THE SPRAGUE MATHER FLOWAGE AND SPRAGUE AROUND 855 PM...
  THE NECEDAH WILDLIFE REFUGE AND CLOVERDALE AROUND 900 PM...
  NEW MINER AROUND 905 PM...
  NECEDAH AND KELLY AROUND 910 PM...
  HIGHWAY 58 AND COUNTY G AND HIGHWAYS 80 AND 58 AROUND 915 PM...

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR
NO ADVANCED WARNING.

LAT...LON 4367 8986 4373 8996 4418 9046 4423 9047
      4432 9034 4425 9031 4424 8989 4419 8990
      4409 9003 4396 8995 4387 8996 4376 8984
      4368 8981

$$

SHEA

000 
WWUS53 KARX 240203
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
902 PM CDT WED AUG 23 2006

WIC053-057-081-240212-
/O.CAN.KARX.SV.W.0110.000000T0000Z-060824T0230Z/
JACKSON WI-JUNEAU WI-MONROE WI-
902 PM CDT WED AUG 23 2006

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONROE...NORTHERN
JUNEAU AND EASTERN JACKSON COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THIS WARNING HAVE WEAKENED AND NO LONGER 
APPEAR CAPABLE OF PRODUCING SEVERE WEATHER.

AS WE HAVE SEEN TONIGHT...STORMS CAN REDEVELOP RATHER QUICKLY AND 
PRODUCE SEVERE WEATHER. A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 
PM SO REMAIN ALERT FOR ADDITIONAL WARNINGS ALTHOUGH THE LIKELIHOOD 
OF SEVERE WEATHER SHOULD CONTINUE TO LOWER AS THE EVENING WEARS ON.

LAT...LON 4368 8986 4376 8997 4418 9044 4424 9046
      4432 9034 4425 9031 4424 8989 4419 8990
      4409 9003 4396 8995 4387 8996 4376 8984
      4368 8981

$$

SHEA

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 8:01 PM CDT, 32 minutes earlier.

Area forecast discussion, Aug 23, 8:01 PM CDT, 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
801 PM CDT WED AUG 23 2006

.UPDATE...SEVERE CONVECTION CONTINUES TO AFFECT PARTS OF CENTRAL
AND SOUTHWEST WI EARLY THIS EVENING...WHERE THERE HAS BEEN
LARGE HAIL AND DAMAGING WINDS ASSOCIATED WITH SUPER CELLS. FROM
MISSISSIPPI RIVER AND POINTS WESTWARD...RUC AND LAPS SOUNDINGS
INDICATED A CAP HAS PREVENTED CONVECTIVE INITIATION SO FAR. RUC
SUPPORTED ADDITIONAL CONVECTION MAY DEVELOP ON THE FRONT TONIGHT.

PER SPC SWOMCD EARLIER THIS EVENING AT 0017Z...MAIN SEVERE WEATHER
THREAT APPEARS TO REMAIN IN CENTRAL AND SOUTHWEST WI THROUGH 03Z.
AFTER DISCUSSION WITH SPC...HOWEVER...CURRENT PLANS ARE TO
CONTINUE THE CURRENT ENTIRE TORNADO WATCH AS IS UNTIL SEVERE
WEATHER THREAT ENDS FOR WHOLE AREA. ZONE UPDATES WILL BE ISSUED
THIS EVENING AS WARRANTED.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...NONE.
MN...NONE.
IA...NONE.
&&

THOMPSON

Hazardous weather outlook, Aug 23, 7:08 PM CDT, 1 hour 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
708 PM CDT WED AUG 23 2006

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-032>034-
041>044-053>055-061-241100-
ADAMS-ALLAMAKEE-BUFFALO-CHICKASAW-CLARK-CLAYTON-CRAWFORD-DODGE-
FAYETTE-FILLMORE-FLOYD-GRANT-HOUSTON-HOWARD-JACKSON-JUNEAU-LA CROSSE-
MITCHELL-MONROE-MOWER-OLMSTED-RICHLAND-TAYLOR-TREMPEALEAU-VERNON-
WABASHA-WINNESHIEK-WINONA-
708 PM CDT WED AUG 23 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MINNESOTA...NORTHEAST IOWA...AND SOUTHWEST INTO CENTRAL WISCONSIN.

.DAY ONE...TONIGHT

A FRONTAL BOUNDARY REMAINS LOCATED FROM NEAR RED WING MINNESOTA TO
LA CROSSE WISCONSIN...SOUTHEASTWARD TO NEAR WISCONSIN DELLS. IN
SPITE OF NO THUNDERSTORMS FORMING ALONG THE FRONT IN AREAS NEAR AND
WEST OF THE MISSISSIPPI RIVER...CONCERN REMAINS THAT STORMS COULD
STILL FORM IN THESE AREAS THIS EVENING.

FURTHER AWAY FROM THE FRONT...ALONG AND IN AREAS EAST OF INTERSTATE
94 IN WISCONSIN...LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY
THREAT...ALTHOUGH AN ISOLATED TORNADO IS POSSIBLE. THIS THREAT WILL
CONTINUE THROUGH 10 PM THIS EVENING.

STORMS MAY BUILD WEST TOWARD I-35 THROUGH THE EVENING AND ALSO WILL
CONTAIN A LARGE HAIL AND DAMAGING WIND THREAT. ISOLATED TORNADOES ARE
POSSIBLE SHOULD THE BOUNDARY MOVE WEST THROUGH THE EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A SLIGHT RISK OF SEVERE THUNDERSTORMS CONTINUES FOR THURSDAY AND
THURSDAY NIGHT. THE FRONTAL BOUNDARY WILL REMAIN NEAR A SIOUX FALLS
TO MASON CITY AND DUBUQUE LINE FOR THURSDAY AND THURSDAY NIGHT. AS A
STRONG UPPER DISTURBANCE AND AN AREA OF LOW PRESSURE MOVE ACROSS THE
NORTHERN PLAINS...THE SOUTHERLY FLOW OF MOISTURE INTO AND OVER THE
FRONT WILL INCREASE FOR THURSDAY AFTERNOON AND EVENING. THE AIRMASS
SOUTH OF THE FRONTAL BOUNDARY WILL AGAIN BECOME VERY UNSTABLE. WINDS
ALOFT WILL INCREASE AS WELL. THIS COMBINATION WILL BE FAVORABLE FOR
A FEW OF THE STORMS TO BECOME SEVERE...WITH LARGE HAIL AND DAMAGING
WINDS THE MAIN THREAT. IF THE FRONT LIFTS INTO THE AREA THURSDAY
AFTERNOON OR EARLY THURSDAY EVENING...THERE WILL ALSO BE A RISK FOR
ISOLATED TORNADOS WITH ANY THUNDERSTORMS NEAR THE FRONTAL BOUNDARY.
THE TORNADO THREAT WOULD MAINLY BE ACROSS NORTHEAST IOWA AND
SOUTHWEST WISCONSIN.

WITH A VERY MOIST AIRMASS BEING LIFTED NORTH OVER THE FRONT...THERE
IS ALSO THE THREAT OF LOCALLY HEAVY RAINS AND A POTENTIAL FOR FLASH
FLOODING THURSDAY NIGHT. THIS THREAT APPEARS TO BE MAINLY NORTH OF
INTERSTATE 90.

STAY TUNED FOR LATER OUTLOOKS WHICH WILL REFINE THE TIMING AND THREAT
AREAS FOR THESE POTENTIAL SEVERE WEATHER EVENTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NEED TO BE MAINTAINED THROUGH 10 PM...
MAINLY ALONG AND EAST OF THE INTERSTATE 94 CORRIDOR. SPOTTERS
ALONG THE MISSISSIPPI RIVER CORRIDOR AND WEST SHOULD REMAIN READY FOR
ACTIVATION ANYTIME THROUGH AT LEAST 10 PM THIS EVENING.

SPOTTER ACTIVATION MAY BE NEEDED ALMOST ANYWHERE IN THE AREA THURSDAY
AFTERNOON AND EVENING...WHICH WILL DEPEND ON WHERE THE FRONTAL
BOUNDARY IS.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

THOMPSON

In the hours before

Local storm report, Aug 23, 7:50 PM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
750 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0742 PM     HAIL             UNION CENTER            43.68N 90.26W
08/23/2006  E0.75 INCH       JUNEAU             WI   LAW ENFORCEMENT

&&

SHEA

Local storm report, Aug 23, 7:54 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
754 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     HAIL             HILLSBORO               43.65N 90.34W
08/23/2006  E1.75 INCH       VERNON             WI   FIRE DEPT/RESCUE

0745 PM     HAIL             1 SW UNION CENTER       43.67N 90.28W
08/23/2006  E1.75 INCH       JUNEAU             WI   FIRE DEPT/RESCUE

&&

ADAMS

Local storm report, Aug 23, 7:56 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
756 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     TSTM WND DMG     KIRBY                   44.10N 90.53W
08/23/2006                   MONROE             WI   TRAINED SPOTTER

            BARN DOWN

&&

DAVIS

Local storm report, Aug 23, 7:58 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
758 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0758 PM     HAIL             WONEWOC                 43.65N 90.22W
08/23/2006  E0.75 INCH       JUNEAU             WI   AMATEUR RADIO

&&

DAVIS

Local storm report, Aug 23, 8:12 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
812 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0811 PM     HAIL             CAZENOVIA               43.53N 90.20W
08/23/2006  E1.75 INCH       RICHLAND           WI   AMATEUR RADIO

&&

DAVIS

Local storm report, Aug 23, 8:16 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
816 PM CDT WED AUG 23 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0757 PM     HAIL             1 W WARRENS             44.13N 90.52W
08/23/2006  E0.88 INCH       MONROE             WI   AMATEUR RADIO

&&

DAVIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 23, 7:05 PM CDT	Severe Thunderstorm Warning	ARX	Juneau	25 min
Aug 23, 7:23 PM CDT	Severe Thunderstorm Warning	ARX	Vernon	47 min
Aug 23, 7:28 PM CDT	Severe Thunderstorm Warning	ARX	Juneau	46 min
Aug 23, 7:32 PM CDT	Severe Thunderstorm Warning	ARX	Jackson	28 min
Aug 23, 7:45 PM CDT	Severe Thunderstorm Warning	ARX	Monroe	30 min
Aug 23, 8:44 PM CDT	Severe Thunderstorm Warning	ARX	Juneau, Monroe, Vernon	29 min
Aug 23, 9:18 PM CDT	Severe Thunderstorm Warning	ARX	Monroe	27 min
Aug 23, 9:43 PM CDT	Severe Thunderstorm Warning	ARX	Juneau, Monroe	42 min
Aug 23, 11:03 PM CDT	Severe Thunderstorm Warning	ARX	Juneau	42 min
Aug 23, 11:59 PM CDT	Severe Thunderstorm Warning	ARX	Adams	31 min
Aug 24, 12:25 AM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	50 min
Aug 24, 1:10 AM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau	50 min
Aug 24, 2:15 AM CDT	Severe Thunderstorm Warning	ARX	Jackson	45 min
Aug 24, 3:32 AM CDT	Severe Thunderstorm Warning	ARX	Juneau	43 min
Aug 24, 12:13 PM CDT	Severe Thunderstorm Warning	ARX	Vernon	32 min
Aug 24, 12:25 PM CDT	Severe Thunderstorm Warning	ARX	Crawford	30 min
Aug 24, 12:53 PM CDT	Severe Thunderstorm Warning	ARX	Richland	18 min
Aug 24, 3:14 PM CDT	Flash Flood Watch	ARX	Adams, Buffalo, Clark, Jackson, Juneau, La Crosse and 3 more	13 hr
Aug 24, 5:08 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	67 min
Aug 24, 5:53 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	52 min
Aug 24, 5:57 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	52 min
Aug 24, 6:41 PM CDT	Severe Thunderstorm Warning	ARX	Trempealeau	49 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2006 Every severe thunderstorm warning in 2006

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.