Severe Thunderstorm Warning 99, NWS Twin Cities, MN

193 
WWUS53 KMPX 112213
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
513 PM CDT SUN JUL 11 2010

WIC005-033-095-109-112245-
/O.CON.KMPX.SV.W.0099.000000T0000Z-100711T2245Z/
POLK WI-BARRON WI-ST. CROIX WI-DUNN WI-
513 PM CDT SUN JUL 11 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
DUNN...NORTHEASTERN ST. CROIX...SOUTHERN BARRON AND SOUTHERN POLK
COUNTIES UNTIL 545 PM CDT...

AT 511 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM CHETEK TO RIDGELAND TO CLEAR LAKE...MOVING
SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  CYLON...FOREST...RIDGELAND AND CONNORSVILLE.

LAT...LON 4512 9201 4510 9248 4533 9268 4542 9167
      4532 9156 4523 9156
TIME...MOT...LOC 2212Z 296DEG 29KT 4533 9158 4520 9188
          4526 9231
WIND...HAIL 60MPH 1.00IN

$$

665 
WWUS53 KMPX 112237
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
537 PM CDT SUN JUL 11 2010

WIC005-033-095-109-112247-
/O.EXP.KMPX.SV.W.0099.000000T0000Z-100711T2245Z/
POLK WI-BARRON WI-ST. CROIX WI-DUNN WI-
537 PM CDT SUN JUL 11 2010

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DUNN...NORTHEASTERN
ST. CROIX...SOUTHERN BARRON AND SOUTHERN POLK COUNTIES WILL EXPIRE AT
545 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

LAT...LON 4512 9201 4510 9248 4533 9268 4542 9167
      4532 9156 4523 9156
TIME...MOT...LOC 2237Z 296DEG 29KT 4524 9132 4511 9162
          4517 9205

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
328 PM CDT SUN JUL 11 2010

.DISCUSSION...

SHORT TERM CONCERNS ENTAIL MOVEMENT OF SFC FNT AND STRENGTH OF
CONVECTION DEVELOPING ALONG IT. LATEST VSBL SATELLITE AND RADAR
TRENDS SHOW A SOUTHEAST MOVEMENT ABOUT 21KTS. THIS WOULD BRING THE
BACK EDGE OF THE ACTIVITY NEAR A RICE LAKE...RED WING AND FAIRMONT
LINE BY 00Z...WHICH IS CLOSE TO THE CURRENT HRRR. SOME TRAILING
ACTIVITY BEHIND THIS INITIAL BOUNDARY AS DRIER DEWPOINT AIR WORKS
INTO THE REGION...SO WILL KEEP A SLGT CHC POPS IN EC MN FOR A FEW HOURS.
MUCH OF THE CONVECTION SHOULD HAVE EXITED THE AREA THROUGH 03Z.
COOLER AND DRIER CONDITIONS FOLLOW BEHIND THE FRONT AS THE HIGH
MOVES IN FOR MONDAY AND MONDAY NIGHT.

NEXT TROUGH AND SFC CDNFT APPROACHES THE AREA LATER TUESDAY AND
TUESDAY NIGHT. RETURN FLOW/DESTABILIZATION DEVELOPS OVER THE FAR
WESTERN CWA BY LATE TUESDAY AFTERNOON. MOISTURE TRANSPORT
IMPRESSIVE INTO THE FRONTAL BOUNDARY AS IT WORKS INTO THE CWA
TUESDAY NIGHT. ALL MODELS BRING THE FRONT INTO THE FAR WEST BY 12Z
WED...WITH THE GFS HAVING CONVECTIVE FEEDBACK PROBLEMS THEREAFTER.
COULD BE SEVERE THREAT INTO WESTERN CWA TUESDAY NIGHT...WITH
LOCAL TORNADO PROBABILITIES SHOWING INCREASING TREND AROUND 00Z
WED. THEN INCREASING STRONG MID LEVEL WARM AIR IS DRIVEN INTO
CENTRAL CWA 18Z. SHOULD BE STRONG ENOUGH TO INHIBIT CONVECTION
INTO FAR SOUTHERN CWA THROUGH MUCH OF THE MORNING. THEN SEVERE
CONVECTION LIKELY AND THEN TROUGH AND COLD FRONT MOVES IN ACROSS
THE REGION. SEVERE PARAMETERS ARE LOOKING BETTER ACROSS CENTRAL AND
EASTERN CWA DURING WEDNESDAY AFTERNOON AND EVENING PERIOD.

FRONT EXITS THE REGION WEDNESDAY NIGHT WITH DRY CONDITIONS
DEVELOPING AND LASTING INTO THURSDAY NIGHT. MODEL TRENDS FOR THE
LONGER TERM INDICATE UPPER FLOW PATTERN REMAINS MORE ZONAL WITH
TIMING OF EMBEDDED WAVES BECOMING DIFFICULT. APPEARS A WEAK FRONT
MOVES ACROSS THE REGION FRI/FRI NIGHT WITH SOME DRYING INTO THE
WEEKEND. KEPT SUNDAY DRY FOR NOW...AND WILL CONTINUE TO MONITOR
TRENDS INTO THE WEEKEND.

&&

.AVIATION.../18Z TAF ISSUANCE/
SURFACE COLD FRONT EXTENDS FROM NEAR THE TIP OF LAKE SUPERIOR...TO
JUST WEST OF KMSP...TO KRWF AT TAF ISSUANCE. WHILE DESTABILIZATION
IS BEING SOMEWHAT INHIBITED BY RESIDUAL CLOUD COVER...EXPECT AT
LEAST SCT SHRA/TS TO DEVELOP ALONG/AHEAD OF THE FRONT THIS
AFTERNOON. HAVE INCLUDED VICINITY AND/OR TEMPO GROUPINGS AT ALL
SITES EXCEPT KAXN /WHICH THE FRONT HAS ALREADY PASSED BY. CONVECTIVE
THREAT SHOULD END AT MN SITES AROUND 00Z...AND WI SITES BY 02Z.
POST FROPA SCT-BKN CLOUDS CIRCA 2500 FT WILL ALSO BE POSSIBLE INTO
THE EVENING. WINDS WILL SHIFT TO THE NORTHWEST WITH THE
FROPA...AND THEN SHIFT TO MORE EAST-NORTHEASTERLY IN DIRECTION FOR
MONDAY.

KMSP...SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BE IN THE
VICINITY OF THE AIRPORT BETWEEN 19Z AND 23Z...AS THE COLD FRONT
MOVES ACROSS THE AREA. SOUTHWEST WINDS TO START THE PERIOD SHIFT
TO THE NORTHWEST BETWEEN 20Z AND 22Z WITH THE FROPA...THEN SHIFT
TO NORTHERLY AROUND 05Z...AND THEN NORTHEASTERLY AROUND 15Z.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
&&

DWE/LS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1218 PM CDT SUN JUL 11 2010

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
121730-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
1218 PM CDT SUN JUL 11 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
FROM SOUTH CENTRAL INTO EAST CENTRAL MINNESOTA AND WEST CENTRAL
WISCONSIN...AS A COLD FRONT PASSES ACROSS THE AREA. THE PRIMARY THREATS
TODAY WILL BE DAMAGING WIND GUSTS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE CONTINUES TO BE INDICATIONS THAT A MORE SIGNIFICANT SEVERE
WEATHER EVENT WILL BE POSSIBLE TUESDAY EVENING INTO WEDNESDAY
NIGHT AS A STRONG COLD FRONT SWEEPS ACROSS THE REGION. THERE
CURRENTLY APPEARS TO BE THE POTENTIAL FOR HAIL...DAMAGING
WINDS...AND POSSIBLY TORNADOES WITH THIS ACTIVITY. AT THIS TIME...THE
HIGHEST POTENTIAL FOR SEVERE WEATHER WILL COME TUESDAY NIGHT
ACROSS WEST CENTRAL AND CENTRAL MINNESOTA. WEDNESDAY AFTERNOON
INTO WEDNESDAY NIGHT WILL SEE THE HIGHEST SEVERE WEATHER THREAT
MOVE INTO SOUTHERN AND CENTRAL MINNESOTA EAST INTO WEST CENTRAL
WISCONSIN.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON ACROSS
SOUTH CENTRAL AND EAST CENTRAL MINNESOTA AND WEST CENTRAL
WISCONSIN.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
249 PM CDT SUN JUL 11 2010

WIZ014-112045-
POLK-
249 PM CDT SUN JUL 11 2010

...STRONG THUNDERSTORM MOVING INTO NORTHERN POLK COUNTY THROUGH 345
PM CDT...

AT 244 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 6 MILES EAST OF GRANTSBURG. THIS STORM WAS MOVING
SOUTHEAST AT 15 MPH.

HAIL UP TO DIME SIZE AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  LEWIS.
  CLAM FALLS.
  MCKINLEY
  FREDERIC.

LAT...LON 4572 9216 4553 9218 4554 9230 4566 9255
      4571 9255 4573 9254 4574 9252 4574 9219
TIME...MOT...LOC 1948Z 299DEG 15KT 4577 9254

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
325 PM CDT SUN JUL 11 2010

MNZ092-093-112115-
FARIBAULT-FREEBORN-
325 PM CDT SUN JUL 11 2010

...STRONG THUNDERSTORMS MOVING OVER FARIBAULT AND FREEBORN COUNTIES
THROUGH 415 PM CDT...

AT 321 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 4 MILES WEST OF ALDEN. THIS STORM WAS MOVING SOUTHEAST
AT 15 MPH.

HAIL UP TO DIME SIZE AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  ALDEN.
  WALTERS.
  KIESTER.
  MANSFIELD.
  EMMONS.

LAT...LON 4350 9332 4350 9371 4371 9378 4371 9352
TIME...MOT...LOC 2025Z 324DEG 11KT 4366 9365