Severe Thunderstorm Warning 116, NWS La Crosse, WI

987 
WWUS53 KARX 050514
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1214 AM CDT WED SEP 5 2012

IAC043-050600-
/O.CON.KARX.SV.W.0116.000000T0000Z-120905T0600Z/
CLAYTON IA-
1214 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
CLAYTON COUNTY UNTIL 100 AM CDT...

AT 1210 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR BIXBY STATE PARK...OR 12 MILES SOUTH
OF ELKADER...MOVING SOUTHEAST AT 10 MPH. THIS STORM CAN PRODUCE
QUARTER SIZE HAIL.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EDGEWOOD AND WOOD AROUND 1230 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM WEDNESDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA.

&&

LAT...LON 4275 9154 4283 9134 4264 9123 4264 9124
      4264 9150
TIME...MOT...LOC 0515Z 337DEG 8KT 4268 9141
WIND...HAIL <50MPH 1.00IN

$$

BOYNE

535 
WWUS53 KARX 050524
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1224 AM CDT WED SEP 5 2012

IAC043-050600-
/O.CON.KARX.SV.W.0116.000000T0000Z-120905T0600Z/
CLAYTON IA-
1224 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
CLAYTON COUNTY UNTIL 100 AM CDT...

AT 1220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR BIXBY STATE PARK...OR 10 MILES SOUTH
OF ELKADER...MOVING SOUTHEAST AT 5 MPH. THIS STORM CAN PRODUCE
QUARTER SIZE HAIL.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BIXBY STATE PARK AROUND 1235 AM...
  EDGEWOOD AROUND 1245 AM...
  WOOD AROUND 100 AM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM WEDNESDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA.

&&

LAT...LON 4275 9154 4283 9134 4264 9123 4264 9124
      4264 9150
TIME...MOT...LOC 0524Z 303DEG 5KT 4271 9139
WIND...HAIL <50MPH 1.00IN

$$

BOYNE

826 
WWUS53 KARX 050538
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1238 AM CDT WED SEP 5 2012

IAC043-050600-
/O.CON.KARX.SV.W.0116.000000T0000Z-120905T0600Z/
CLAYTON IA-
1238 AM CDT WED SEP 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
CLAYTON COUNTY UNTIL 100 AM CDT...

AT 1234 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR LITTLEPORT...OR 10 MILES SOUTH OF
ELKADER...MOVING EAST AT 10 MPH. THIS STORM CAN PRODUCE QUARTER SIZE 
HAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM WEDNESDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA.

&&

LAT...LON 4275 9154 4283 9134 4264 9123 4264 9124
      4264 9150
TIME...MOT...LOC 0539Z 279DEG 8KT 4271 9133
WIND...HAIL <50MPH 1.00IN

$$

BOYNE

876 
WWUS53 KARX 050605
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
105 AM CDT WED SEP 5 2012

IAC043-050603-
/O.EXP.KARX.SV.W.0116.000000T0000Z-120905T0600Z/
CLAYTON IA-
105 AM CDT WED SEP 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CLAYTON COUNTY
HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT
WEDNESDAY MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA.

LAT...LON 4275 9154 4283 9134 4264 9123 4264 9124
      4264 9150
TIME...MOT...LOC 0553Z 279DEG 8KT 4270 9129

$$

BOYNE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
1145 PM CDT TUE SEP 4 2012

.SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT
256 PM CDT TUE SEP 4 2012

MAIN FORECAST CONCERNS ARE ON CONVECTION THROUGH WEDNESDAY MORNING
AND ASSOCIATED SEVERE WEATHER POTENTIAL.

CURRENTLY AS OF 20Z...WATER VAPOR LOOP AND RAP 500MB HEIGHT ANALYSIS
SHOWED A POTENT SHORTWAVE TROUGH OVER SOUTHERN SASKATCHEWAN INTO
EASTERN MONTANA...THEN NEAR ZONAL TO SLIGHT SOUTHWEST FLOW STREAMING
EAST INTO NEW ENGLAND. WITHIN THIS FLOW...A SHORTWAVE WAS PRESENT
OVER FAR WESTERN WISCONSIN...WITH SOME WEAK RIDGING RIGHT BEHIND IT
OVER MINNESOTA. MOSTLY SUNNY SKIES AFTER THE FOG BURNED OFF THIS
MORNING HAS ALLOWED FOR STRONG HEATING ACROSS THE AREA. WITH 12Z
RAOBS HAVING 850MB TEMPS AROUND 18C...TEMPERATURES HAVE CLIMBED INTO
THE MID TO UPPER 80S. DEWPOINTS REMAIN MUGGY FOR THIS TIME OF
YEAR...IN THE MID 60S TO AROUND 70. THE COMBINATION OF THE
TEMPERATURES AND DEWPOINTS HAS RESULTED IN MLCAPE VALUES OF
2000-3000 J/KG WITH LITTLE CIN. AT THE SURFACE...LOW PRESSURE WAS
NEAR AITKIN MN WITH A DRY-LINE ARCING THROUGH NORTHWEST WI INTO
SOUTHEAST MN. PLENTY OF CUMULUS GOING UP AHEAD OF THIS DRY LINE.
STORMS ARE EXPECTED TO DEVELOP IN THE NEXT HOUR OR TWO OUT OF THIS
CUMULUS FIELD. BIG CONCERN FOR SEVERE WEATHER IS WIND GIVEN
MID-LEVEL DRY AIR PRESENT...SEEN ON BOTH WATER VAPOR AND THE 12Z MPX
SOUNDING.  TO THE WEST...FAIRLY QUIET ACROSS THE DAKOTAS AHEAD OF
THE POTENT TROUGH. HOWEVER...ANOTHER SURFACE LOW HAS DEVELOPED AHEAD
OF IT NEAR PIERRE. IN ADDITION... GOES PRECIPITABLE WATER IMAGERY
SHOWS MOISTURE BEGINNING TO SURGE TO THE NORTHWEST THROUGH EASTERN
NEBRASKA AHEAD OF THE SURFACE LOW/UPPER TROUGH.

REST OF THE AFTERNOON...ASSUMING CONVECTION FIRES IN THE CUMULUS
FIELD...WHICH IS INDICATED BY MANY MESO-MODELS...EXPECTING IT TO
PROPAGATE EAST-SOUTHEAST QUICKLY DURING THE NEXT FEW HOURS. THIS IS
DUE TO THE DRY MID LEVEL AIR ALLOWING FOR RAPID MOVING OUTFLOW AS
WELL AS THE MAIN SHORTWAVE ACCOMPANYING IT SHIFTING INTO EASTERN
WISCONSIN BY 00Z. THEREFORE...THINKING THE SEVERE THREAT AND
PROBABLY MUCH OF THE PRECIPITATION WILL END BY 00Z. ONLY CAVEAT
COULD BE IN FAR SOUTHWEST WI AND FAR NORTHEAST IA WHERE THERE ARE
HINTS THE TAIL END OF CONVECTION COULD STALL OUT. KEPT SOME HIGHER
CHANCES OF PRECIPITATION DOWN THERE JUST IN CASE.

TONIGHT AND WEDNESDAY...THE POTENT SHORTWAVE OVER EASTERN MONTANA IS
FORECAST TO MOVE INTO WESTERN MINNESOTA BY 12Z WEDNESDAY. AS THIS
OCCURS...THE MOISTURE SEEN LIFTING UP THROUGH EASTERN NEBRASKA RIGHT
NOW IS GOING TO GET ISENTROPICALLY LIFTED UP TOWARDS US. SO AFTER
SOME BRIEF SHORTWAVE RIDGING AND SUBSIDENCE THIS EVENING...ANOTHER
ROUND OF SHOWERS AND THUNDERSTORMS LOOKS LIKELY. DEVELOPMENT MAY
OCCUR SOUTH OF I-90 AS EARLY AS 03Z AS SUGGESTED BY THE 04.12Z
NAM/GFS. BETTER POTENTIAL FOR PRECIPITATION FOR THE ENTIRE AREA IS
AFTER MIDNIGHT AS THE SHORTWAVE APPROACHES AND 850MB MOISTURE
TRANSPORT REALLY INCREASES. MID-LEVEL FLOW IS NICELY DIFFLUENT TOO
AHEAD OF THE WAVE...AIDING IN FORCING. MCS DEVELOPMENT IS CERTAINLY
POSSIBLE...AS NOTED BY THE 04.12Z ECMWF/UKMET/CANADIAN/NAM.
REGARDING SEVERE CONCERN...1-6KM SHEAR VALUES VARY FROM MODEL TO
MODEL. NAM IS ON THE ORDER OF 30-40 KT WHILE THE GFS IS 20-30KT. THE
NAM WOULD DEFINITELY GIVE A SEVERE WEATHER CONCERN...WITH BOTH HAIL
AND DAMAGING WINDS POSSIBLE. THE GFS NOT AS MUCH SO. THEREFORE...
THINK THE SPC\S DAY 1 OUTLOOK SLIGHT RISK IDEA IS APPROPRIATE. A BIG
NOTE...THERE IS A POSSIBILITY MCS DEVELOPMENT COULD OCCUR FARTHER
SOUTH SAY MORE OVER IOWA. IF IT DOES...CORFIDI VECTORS WOULD TAKE IT
SOUTHEAST...LIMITING SOME OF THE CONVECTIVE ACTIVITY OVER THE
FORECAST AREA. SHORTWAVE TROUGH IS PROGGED TO HEAD EAST TO CENTRAL
UPPER MICHIGAN AND LAKE MICHIGAN BY 18Z...ALLOWING STRONG ISENTROPIC
DESCENT TO FILTER INTO THE AREA AND CLEAR OUT THE
PRECIPITATION/CLOUDS. COLD FRONTAL BOUNDARY TOO LOOKS TO BE THROUGH
THE AREA AROUND 18Z. 850MB TEMPS FALL QUITE A BIT WITH THE PASSAGE
OF THE TROUGH. THROUGH 12Z WEDNESDAY...THEY HOVER BETWEEN 18-20C. BY
00Z THURSDAY...THOUGH... THEY FALL TO 12-14C. THUS...ANTICIPATE A
COOLER DAY TOMORROW...MORE AROUND SEASONABLE NORMALS.

WEDNESDAY NIGHT AND THURSDAY...TROUGHING OVER THE FORECAST AREA AS A
RESULT OF THAT POTENT SHORTWAVE MOVING THROUGH WEDNESDAY LOOKS TO BE
SHORT-LIVED. THAT IS BECAUSE ANOTHER POTENT TROUGH IS PROGGED TO
DROP SOUTH INTO MONTANA BY 12Z THURSDAY. THERE WILL BE ENOUGH
SUBSIDENCE AND DRY AIR PERSISTING IN THE WAKE OF WEDNESDAY\S
SHORTWAVE SUCH THAT WEDNESDAY NIGHT STAYS DRY. AT THE SURFACE...A
HIGH PRESSURE RIDGE IS PROGGED TO BUILD INTO WESTERN PORTIONS OF THE
FORECAST AREA BY 12Z THURSDAY. GIVEN THE RIDGE POSITION...ENOUGH OF
A NORTHWESTERLY BREEZE SHOULD OCCUR TO PREVENT ANY FOG AT LEAST IN
THE MISSISSIPPI RIVER VALLEY. OTHER SMALLER VALLEYS LIKE THE
WISCONSIN MAY STILL BE SUSCEPTIBLE...THOUGH. COOLER NIGHT LIKELY
WITH WINDS LIGHTENING UP THROUGH THE NIGHT AS WELL AS CLEAR SKIES.
SOME OF THE TYPICAL COLD SPOTS COULD FALL INTO THE MID 40S. ON
THURSDAY...THAT POTENT TROUGH DIGS DOWN A LITTLE MORE THROUGH
MONTANA...SETTING UP WEST-SOUTHWEST MID LEVEL FLOW OVER THE AREA.
WITHIN THIS FLOW...THERE COULD BE A SHORTWAVE SKIMMING ACROSS
NORTHERN WISCONSIN IN THE AFTERNOON...BUT OTHERWISE MODELS DO NOT
SHOW ANY OTHER SHORTWAVES OF SIGNIFICANCE. HOWEVER..WITH THAT POTENT
TROUGH DIGGING A LITTLE MORE...IT SETS UP A 310-315K ISENTROPIC
LIFT/MID-LEVEL FRONTOGENESIS ZONE DOWNSTREAM ACROSS THE NORTHERN
PLAINS INTO OUR REGION. LOOKS LIKE ANY PRECIPITATION RESULTING FROM
THIS FORCING WILL STAY WEST OF OUR AREA...BUT AN INCREASE IN
MID/HIGH CLOUDS IS LIKELY...ESPECIALLY IN THE AFTERNOON. 850MB TEMPS
OF 12-14C COMBINED WITH A DECENT AMOUNT OF SUN AND THE DRY AIR
SHOULD ALLOW FOR TEMPERATURES TO CLIMB INTO THE MID TO UPPER 70S.

THURSDAY NIGHT AND FRIDAY...THE POTENT TROUGH OVER MONTANA IS
FORECAST TO DIG SOUTHEAST DURING THIS PERIOD...BEING PUSHED BY
RIDGING DROPPING DOWN INTO SOUTH CENTRAL CANADA. BY 00Z SATURDAY...A
LONG WAVE TROUGH SHOULD EXTEND FROM NORTHEAST ONTARIO...INTO THE
FORECAST AREA AND INTO NEBRASKA. THE MAIN ISSUE WITH THIS POTENT
TROUGH COMING TOWARDS THE AREA IS WHERE DOES THE FRONTOGENESIS ZONE
AHEAD OF IT LAY UP...AND THUS THE ASSOCIATED PRECIPITATION. THE
04.00Z ECMWF KEPT THE BULK OF IT ACROSS IOWA THURSDAY NIGHT AND INTO
ILLINOIS AND MISSOURI ON FRIDAY...THUS FOR THE MOST PART OUR
FORECAST AREA ENDS UP DRY. THE 04.12Z NAM IS FARTHER NORTH...HAVING
PRECIPITATION FALL SOUTH OF INTERSTATE 94 AFTER MIDNIGHT THURSDAY
NIGHT AND FRIDAY. 04.12Z GFS IS A LITTLE MORE INTERESTING. THE MODEL
SUGGESTS SOME HIGHER LEVEL FRONTOGENESIS PRODUCING A BAND OF MOSTLY
LIGHT RAIN...WHICH SLOWLY DROPS SOUTH THROUGH THE AREA AFTER
MIDNIGHT THURSDAY NIGHT THROUGH FRIDAY. THESE BANDS SOMETIMES VERIFY
AND OTHER TIMES NOT. OVERALL...THE BULK OF THE PRECIPITATION IN THE
GFS FALLS TO THE SOUTH. IN ANY EVENT...ALL MODELS SUGGEST A NEED TO
INCREASE PRECIPITATION CHANCES UP TO 40 FOR NOW...MAINLY SOUTH OF
I-90. FURTHER REFINEMENTS WILL BE NEEDED AS WE GET CLOSER TO THIS
PERIOD. WITH MORE CLOUDS AS WELL AS COOLER AIR COMING IN WITH THE
UPPER TROUGH...ANTICIPATE THIS PERIOD TO BE MUCH COOLER THAN AS OF
LATE. THIS WILL BE ESPECIALLY TRUE ON FRIDAY AS 850MB TEMPS FALL TO
6-9C. HIGHS ON FRIDAY MAY GET STUCK IN THE 60S...ESPECIALLY IF IT
RAINS ALL DAY LIKE THE NAM.

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY
256 PM CDT TUE SEP 4 2012

04.12Z ECMWF/GFS/CANADIAN AND GFS ENSEMBLES ARE A LITTLE DIFFERENT
AMONGST EACH OTHER TODAY COMPARED TO YESTERDAY...MOSTLY WITH REGARDS
TO HANDLING WHETHER THE UPPER TROUGH COMING THROUGH THE FORECAST
AREA FRIDAY ENDS UP CLOSING OFF IN THE OHIO RIVER VALLEY.
INTERESTINGLY...THE 04.12Z ECMWF/CANADIAN AND GFS HAVE NOW
FLIP-FLOPPED WITH EACH OTHER...WITH THE ECMWF/CANADIAN NOW MORE
PROGRESSIVE AND THE GFS CLOSING OFF. FOR OUR AREA...THOUGH...WHICH
EVER SOLUTION PANS OUT REALLY DOESN\T MATTER...AS BOTH SCENARIOS
BUILD HIGH PRESSURE INTO THE FORECAST AREA FOR THE WEEKEND. SO MAYBE
AFTER A FEW LINGERING SHOWERS IN NORTHEAST IA/SOUTHWEST WI FRIDAY
NIGHT...EXPECT DECREASING CLOUDS AND DRY WEATHER FOR THE WEEKEND.
CERTAINLY LOOKS COOL COMPARED TO WHAT HAS BEEN SEEN RECENTLY...
THANKS TO 850MB TEMPS OF 6-8C ON SATURDAY AND 10-12C ON SUNDAY.
WOULD NOT BE SURPRISED IF SOME OF THE TYPICAL COLD SPOTS END UP
SEEING SOME UPPER 30S.

FOR EARLY NEXT WEEK...UPPER RIDGING OVER THE WESTERN U.S. IS
FORECAST TO BUILD UP INTO THE FORECAST AREA...BUT FLATTEN PRETTY
QUICKLY BY TUESDAY AS A SHORTWAVE TROUGH CROSSING SOUTHERN CANADA.
WILL SEE A WARM UP WITH THE RIDGING COMING IN...AT LEAST BACK TO
NORMAL. DRY CONDITIONS SHOULD CONTINUE AS WELL WITH THE HIGH
PRESSURE OVER THE WEEKEND BLOCKING GULF OF MEXICO MOISTURE RETURN.

&&

.AVIATION...
1145 PM CDT TUE SEP 4 2012

ANOTHER ROUND OF THUNDERSTORMS WILL IMPACT THE AREA AS AN
ORGANIZED MCS DRIVES ACROSS THE REGION BETWEEN 05-09Z. STRONG WINDS
WILL ACCOMPANY THE STORMS INITIALLY...LIKELY IMPACTING KRST BETWEEN
0530-07Z AND 07-08Z AT KLSE. THE STRONGEST WINDS COULD BE ON A
WEAKENING TREND AS THE STORMS REACH KLSE...HOWEVER.

SHRA/TS COULD LINGER THROUGH WED MORNING...BUT THE BULK OF THIS
ACTIVITY SHOULD HAVE EXITED EAST BY 18Z AS A COLD FRONT SWEEPS
ACROSS THE UPPER MISSISSIPPI RIVER VALLEY. TIMING IS ROUGHLY 16Z AT
KRST AND 18Z AT KLSE.

CLEARING FOR WED NIGHT...AND CONSIDERING THE RAINFALL...SOME
INGREDIENTS FOR FOG. AS OF NOW...THINK LOW LEVEL WINDS WILL BE
STIRRING TOO MUCH...THUS INHIBITING THE FOG. OF COURSE THIS WILL BE
RE-EVALUATED FOR LATER TAF ISSUANCES.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
256 PM CDT TUE SEP 4 2012

WI...NONE.
MN...NONE.
IA...NONE.

&&

SHORT TERM...AJ
LONG TERM....AJ
AVIATION.....RIECK

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
446 PM CDT TUE SEP 4 2012

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-032>034-
041>044-053>055-061-051200-
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-
446 PM CDT TUE SEP 4 2012

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

.DAY ONE...THROUGH TONIGHT

LOOK FOR THUNDERSTORMS TO AFFECT MUCH OF THE AREA BEFORE 8 PM. THESE
STORMS WILL BE ABLE TO PRODUCE DAMAGING WINDS AND LARGE HAIL...ALONG
WITH BRIEF HEAVY RAIN AND LIGHTNING. SOME OF THE HAIL COULD BE THE
SIZE OF GOLFBALLS OR LARGER.

ADDITIONAL STORMS ARE EXPECTED TO DEVELOP OVER NORTHERN IOWA AND
SOUTHERN MINNESOTA LATE THIS EVENING...THEN EXPAND INTO SOUTHWEST
AND CENTRAL WISCONSIN AFTER MIDNIGHT. THESE STORMS ALSO HAVE
THE POTENTIAL TO BECOME SEVERE WITH LARGE HAIL...DAMAGING WINDS...
HEAVY RAIN AND LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL REMAIN POSSIBLE WEDNESDAY MORNING INTO THE
EARLY AFTERNOON HOURS AS A STRONG COLD FRONT PUSHES THROUGH THE
REGION. A FEW STORMS MAY STILL BE SEVERE AS THEY TRACK TO THE EAST
WEDNESDAY MORNING...THOUGH THE SEVERE STORMS ARE NOT EXPECTED TO BE
VERY WIDESPREAD AT THIS POINT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED UNTIL 8 PM...AND POSSIBLY AGAIN
LATE TONIGHT INTO WEDNESDAY MORNING.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

HALBACH/ZT/AJ

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
901 PM CDT TUE SEP 04 2012

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

0401 PM     HAIL             3 W UTICA               43.98N 92.01W
09/04/2012  M1.75 INCH       WINONA             MN   TRAINED SPOTTER

            REPORTED 1 MILE SOUTH OF ST. CHARLES

0410 PM     HAIL             6 SSW UTICA             43.90N 92.00W
09/04/2012  M2.00 INCH       WINONA             MN   TRAINED SPOTTER

            REPORTED 4 MILES NW OF CLYDE

0425 PM     HAIL             GOODVIEW                44.07N 91.71W
09/04/2012  E1.00 INCH       WINONA             MN   AMATEUR RADIO

0425 PM     HAIL             3 WNW WINONA            44.06N 91.71W
09/04/2012  E0.88 INCH       WINONA             MN   AMATEUR RADIO

0426 PM     HAIL             STOCKTON                44.03N 91.77W
09/04/2012  E1.75 INCH       WINONA             MN   PUBLIC

0426 PM     HAIL             WINONA                  44.05N 91.66W
09/04/2012  E1.00 INCH       WINONA             MN   PUBLIC

            RELAYED FROM KTTC-TV

0447 PM     HAIL             WINONA                  44.05N 91.66W
09/04/2012  E1.00 INCH       WINONA             MN   AMATEUR RADIO

0501 PM     HAIL             1 E WINONA              44.05N 91.64W
09/04/2012  M0.25 INCH       WINONA             MN   TRAINED SPOTTER

            MOSTLY PEA WITH SOME DIME SIZED HAIL ON THE EAST SIDE OF
            WINONA

0506 PM     HAIL             PRESTON                 43.67N 92.08W
09/04/2012  M0.25 INCH       FILLMORE           MN   TRAINED SPOTTER

            HAIL COVERING THE GROUND

0523 PM     HAIL             5 N CANTON              43.60N 91.93W
09/04/2012  M2.50 INCH       FILLMORE           MN   TRAINED SPOTTER

0530 PM     HAIL             HART                    43.88N 91.74W
09/04/2012  E0.75 INCH       WINONA             MN   PUBLIC

0540 PM     HAIL             NEW ALBIN               43.50N 91.29W
09/04/2012  M1.75 INCH       ALLAMAKEE          IA   BROADCAST MEDIA

            RELAYED BY KWWL

0544 PM     HAIL             NEW ALBIN               43.50N 91.29W
09/04/2012  E1.75 INCH       ALLAMAKEE          IA   LAW ENFORCEMENT

0545 PM     HAIL             2 E NODINE              43.90N 91.41W
09/04/2012  M0.25 INCH       WINONA             MN   TRAINED SPOTTER

0550 PM     TSTM WND GST     7 S JUNCTION            44.91N 90.90W
09/04/2012  E40.00 MPH       CLARK              WI   TRAINED SPOTTER

            ALSO PEA SIZED HAIL

0550 PM     HAIL             MOUND PRAIRIE           43.78N 91.45W
09/04/2012  E1.00 INCH       HOUSTON            MN   CO-OP OBSERVER

0558 PM     HAIL             MOUND PRAIRIE           43.78N 91.45W
09/04/2012  E2.00 INCH       HOUSTON            MN   CO-OP OBSERVER

0600 PM     HAIL             SPRING GROVE            43.56N 91.64W
09/04/2012  E2.50 INCH       HOUSTON            MN   PUBLIC

0605 PM     HAIL             SPRING GROVE            43.56N 91.64W
09/04/2012  E1.00 INCH       HOUSTON            MN   PUBLIC

0609 PM     TSTM WND DMG     GREENWOOD               44.77N 90.60W
09/04/2012                   CLARK              WI   AMATEUR RADIO

            TREE DOWN NEAR THE POST OFFICE IN GREENWOOD.

0613 PM     TSTM WND DMG     LOYAL                   44.74N 90.50W
09/04/2012                   CLARK              WI   AMATEUR RADIO

            SEVERAL SMALL TREES DOWN AROUND TOWN.

0613 PM     TSTM WND GST     3 S LONGWOOD            44.84N 90.60W
09/04/2012  E50.00 MPH       CLARK              WI   LAW ENFORCEMENT

            PEA TO DIME SIZED HAIL ALSO

0617 PM     TSTM WND GST     VEEFKIND                44.70N 90.39W
09/04/2012  E60.00 MPH       CLARK              WI   TRAINED SPOTTER

0623 PM     HAIL             LA CROSSE               43.83N 91.23W
09/04/2012  E0.75 INCH       LA CROSSE          WI   PUBLIC

0625 PM     HAIL             5 SE LA CROSSE          43.78N 91.16W
09/04/2012  E0.50 INCH       LA CROSSE          WI   BROADCAST MEDIA

0631 PM     HAIL             MARQUETTE               43.04N 91.18W
09/04/2012  E1.75 INCH       CLAYTON            IA   PUBLIC

0636 PM     HAIL             DORCHESTER              43.47N 91.52W
09/04/2012  E2.00 INCH       ALLAMAKEE          IA   CO-OP OBSERVER

0645 PM     TSTM WND DMG     DE SOTO                 43.43N 91.20W
09/04/2012                   VERNON             WI   LAW ENFORCEMENT

            NUMEROUS TREES DOWN FROM GENOA TO DESOTO AND POINTS EAST

0646 PM     HAIL             PRAIRIE DU CHIEN        43.04N 91.14W
09/04/2012  E1.25 INCH       CRAWFORD           WI   LAW ENFORCEMENT

0656 PM     TSTM WND GST     RED MOUND               43.46N 91.15W
09/04/2012  E80.00 MPH       VERNON             WI   FIRE DEPT/RESCUE

0656 PM     HAIL             BRODTVILLE              42.95N 91.06W
09/04/2012  M1.00 INCH       GRANT              WI   911 CALL CENTER

0700 PM     HAIL             DE SOTO                 43.43N 91.20W
09/04/2012  M0.25 INCH       VERNON             WI   CO-OP OBSERVER

0725 PM     HAIL             HARPERS FERRY           43.20N 91.15W
09/04/2012  E1.25 INCH       ALLAMAKEE          IA   PUBLIC

0729 PM     TSTM WND DMG     RICHLAND CENTER         43.34N 90.38W
09/04/2012                   RICHLAND           WI   LAW ENFORCEMENT

            TREES DOWN ON NORTH EDGE OF RICHLAND CENTER

0740 PM     TORNADO          PATCH GROVE             42.94N 90.97W
09/04/2012                   GRANT              WI   EMERGENCY MNGR

            MULTIPLE REPORTS OF TORNADO ON THE GROUND.

0740 PM     HAIL             3 NW RICHLAND CENTER    43.37N 90.43W
09/04/2012  M1.50 INCH       RICHLAND           WI   PUBLIC

            IN THE COMMUNITY OF LIME RIDGE

0750 PM     HAIL             WAUKON                  43.27N 91.48W
09/04/2012  E0.50 INCH       ALLAMAKEE          IA   EMERGENCY MNGR

0803 PM     TSTM WND GST     1 ENE BOSCOBEL          43.15N 90.69W
09/04/2012  M48.00 MPH       GRANT              WI   MESONET

0805 PM     TSTM WND GST     GLEN HAVEN              42.83N 91.07W
09/04/2012  M70.00 MPH       GRANT              WI   911 CALL CENTER

            SEVERAL REPORTS OF 70 MPH GUSTS ACROSS NORTHERN AND
            WESTERN GRANT COUNTY. COMMUNITIES INCLUDE GLEN
            HAVEN...BAGLEY...BLOOMINGTON

0815 PM     HAIL             PRAIRIE DU CHIEN        43.04N 91.14W
09/04/2012  E0.75 INCH       CRAWFORD           WI   LAW ENFORCEMENT

0830 PM     HAIL             4 W LANCASTER           42.85N 90.79W
09/04/2012  E1.00 INCH       GRANT              WI   EMERGENCY MNGR

0835 PM     TSTM WND GST     PLATTEVILLE             42.74N 90.48W
09/04/2012  M46.00 MPH       GRANT              WI   AWOS

0835 PM     TSTM WND GST     GLEN HAVEN              42.83N 91.07W
09/04/2012  E60.00 MPH       GRANT              WI   EMERGENCY MNGR

&&

ZT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
932 PM CDT TUE SEP 04 2012

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

0920 PM     TSTM WND DMG     POTOSI                  42.69N 90.71W
09/04/2012                   GRANT              WI   AMATEUR RADIO

            TREES DOWN ACROSS ROAD IN POTOSI. TIME ESTIMATED FROM
            RADAR.

&&

ZT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1000 PM CDT TUE SEP 04 2012

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

0958 PM     HAIL             CLERMONT                43.00N 91.65W
09/04/2012  E1.00 INCH       FAYETTE            IA   EMERGENCY MNGR

&&

ADAMS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1024 PM CDT TUE SEP 04 2012

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

1018 PM     HAIL             CALMAR                  43.18N 91.87W
09/04/2012  E1.00 INCH       WINNESHIEK         IA   CO-OP OBSERVER

&&

ADAMS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1026 PM CDT TUE SEP 4 2012

IAZ010-011-029-030-WIZ054-061-050500-
ALLAMAKEE-CLAYTON-CRAWFORD-FAYETTE-GRANT-WINNESHIEK-
1026 PM CDT TUE SEP 4 2012

...THUNDERSTORMS PERSIST LATE THIS EVENING...

THUNDERSTORMS CONTINUE TO DEVELOP ACROSS PARTS OF THE AREA LATE THIS
EVENING...AND WILL LIKELY PERSIST TOWARD MIDNIGHT. SOME OF THE
STORMS WILL BECOME STRONG...POSSIBLY SEVERE...PRODUCING 1/2 INCH
HAIL AND HEAVY DOWNPOURS.

RIECK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1050 PM CDT TUE SEP 04 2012

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

1037 PM     HAIL             CALMAR                  43.18N 91.87W
09/04/2012  E1.50 INCH       WINNESHIEK         IA   CO-OP OBSERVER

&&

ADAMS