Severe Thunderstorm Warning 205, NWS Twin Cities, MN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
230 PM CDT SAT JUL 31 2004

.DISCUSSION...
FORECAST CONCERN NEAR TERM...CONVECTIVE DEVELOPMENT NEXT FEW DAYS.
MODELS HAVING DIFFICULTY WITH SIGNIFICANT MCS DEVELOPMENT.
TONIGHT..STRONG LAYERED THETA-E ADVECTION MOVING THROUGH EASTERN MN AT
THIS TIME.  THIS ALONG WITH INSTABILITY GRADIENT OVER
REGION...KEEPING ELEVATED SHRA/TSRA GOING OVER EASTERN CWA.  BETTER
INSTABILITY OVER THE SOUTHWEST THIS EVENING.  SHOULD FIRE SCT TSRA
AND MOVE SOUTHEAST AS SHORTWAVE OVER CENTRAL NODAK APPROACHES.
CANT RULE OUT OTHER ACTIVITY IN WEAKENING THETA-E ADVECTION IN THE
EAST THIS EVENING.  BOTH ETA/RUC INDICATED THIS.  CONSIDERING STRONG
INSTABILITY...ANYTHING DEVELOPING OVER THE SOUTHWEST 1/3 OF AREA
TONIGHT...WILL LIKELY GENERATE HAIL AND STRONG WINDS. CHANCE POPS
SEEMS THE WAY TO GO FOR NOW.

ETA HAS COMPLEX MOVING INTO NORTHERN IOWA THIS EVENING...LEAVING THE
STATE HI AND DRY.  BOUNDARY MOVES INTO NORTHWEST CWA AFTER
MIDNIGHT...AND MAY GENERATE SOME CONVECTION THERE.  THIS MAY MOVE
INTO EAST CENTRAL MN TOWARD 12Z SUN.  THEN BOTH ETA/GFS HAVE STRONG
INSTABILITY ASSOCIATED WITH SAGGING FRONT.  LITTLE IN THE WAY OF CIN
AVAILABLE AFT 15Z SUN...SO HELD POPS ALONG AND EAST OF BOUNDARY
DURING THE DAY.

APPEARS GFS HAVING CONVECTIVE FEEDBACK PROBLEMS FOR SUN NITE AND
MONDAY.  BOTH MODELS INDICATE COMPLEX MOVING ACROSS NORTHERN CWA
DURING THIS PERIOD.  GFS LEAPS FRONT SOUTH INTO IOWA BY 00Z
TUE...WITH ETA KEEPING FRONT OVER SOUTHERN CWA.  WILL CONTINUE
CHANCE POPS FOR THIS...ALTHOUGH CAP MAY DEVELOP INTO SOUTHWEST CWA
MONDAY AFTERNOON...PRECLUDING ANYTHING DEVELOPING UNTIL TUESDAY
NITE.

LONGER RANGE...WED THRU SUN.  TREND OF LAST FEW GFS RUNS HAS BEEN TO
DEVELOP STRONGER RIDGING ACROSS THE CENTRAL PLAINS INTO PRAIRIE
PROVINCES OF CANADA...THUS KEEP CWA UNDER A MORE NWLY FLOW MID TO
LATE WEEK.   THIS WOULD KEEP BETTER PRECIP CHANCES TO OUR WEST.  FOR
NOW LEFT IN THE SLIGHT CHC THUNDERSTORMS FOR WED NITE IN SC MN...BUT
IF ANOTHER RUN SHOWS SAME TREND THEY CAN PROBABLY BE YANKED.
TEMPERATURES LOOK ABOUT NORMAL FOR FIRST WEEK OF AUGUST.

&&

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

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1022 PM CDT SAT JUL 31 2004

MNZ041>045-047>059-064-WIZ014>016-011100-
BARRON-BENTON-CHIPPEWA-CHISAGO-DOUGLAS-ISANTI-KANABEC-KANDIYOHI-
LAC QUI PARLE-MEEKER-MILLE LACS-MORRISON-POLK-POPE-RUSK-SHERBURNE-
STEARNS-STEVENS-SWIFT-TODD-WRIGHT-YELLOW MEDICINE-
1022 PM CDT SAT JUL 31 2004

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

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG THUNDERSTORMS MAY AFFECT PARTS OF CENTRAL MINNESOTA
INTO WEST CENTRAL WISCONSIN SUNDAY AFTERNOON AND EVENING.  SOME OF
THESE THUNDERSTORMS MAY CONTAIN LARGE HAIL OR DAMAGING WINDS. IN
ADDITION...SEVERAL MORE BOUTS OF STRONG THUNDERSTORMS ARE POSSIBLE
LATE SUNDAY NIGHT AND MONDAY...AS A WARM AND HUMID AIRMASS SETS UP
OVER THE AREA.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

MNZ060>063-065>070-073>078-082>085-091>093-WIZ023>028-011100-
ANOKA-BLUE EARTH-BROWN-CARVER-CHIPPEWA-DAKOTA-DUNN-EAU CLAIRE-
FARIBAULT-FREEBORN-GOODHUE-HENNEPIN-LE SUEUR-MARTIN-MCLEOD-NICOLLET-
PEPIN-PIERCE-RAMSEY-REDWOOD-RENVILLE-RICE-SCOTT-SIBLEY-ST CROIX-
STEELE-WASECA-WASHINGTON-WATONWAN-
1022 PM CDT SAT JUL 31 2004

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

.DAY ONE...TONIGHT

A SEVERE THUNDERSTORM WATCH COVERS THE AREA UNTIL 3 AM SUNDAY
MORNING. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG THUNDERSTORMS WILL BE POSSIBLE SUNDAY AFTERNOON
AND EVENING. SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE WITH
LARGE HAIL AND DAMAGING WINDS. THE THREAT FOR STRONG THUNDERSTORMS
RESURFACES LATE SUNDAY NIGHT AND CONTINUES THROUGH MONDAY AS A WARM
AND HUMID AIR MASS DEVELOPS OVER THE REGION.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

RAH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
750 PM CDT SAT JUL 31 2004

MNZ041-047-048-054>056-064-010145-
CHIPPEWA-DOUGLAS-LAC QUI PARLE-POPE-STEVENS-SWIFT-YELLOW MEDICINE-
750 PM CDT SAT JUL 31 2004

...TORNADO WATCH CANCELLED FOR PORTIONS OF WEST CENTRAL AND SOUTHWEST
MINNESOTA...

AT 745 PM...TORNADO WATCH NUMBER 676 WAS CANCELLED ALONG AND WEST OF
OF A LINE FROM ALEXANDRIA TO GRANITE FALLS. THE COUNTIES NO LONGER
INCLUDED IN THE TORNADO WATCH ARE...

CHIPPEWA...DOUGLAS...LAC QUI PARLE...POPE...STEVENS...SWIFT...YELLOW
MEDICINE.

AREAS TO THE EAST OF THESE LOCATIONS REMAIN IN A TORNADO WATCH UNTIL
10 PM.

RAH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
901 PM CDT SAT JUL 31 2004

MNZ042>045-049>052-057-058-010300-
BENTON-ISANTI-KANABEC-KANDIYOHI-MEEKER-MILLE LACS-MORRISON-SHERBURNE-
STEARNS-TODD-
901 PM CDT SAT JUL 31 2004

...TORNADO WATCH CANCELLED FOR PORTIONS OF CENTRAL MINNESOTA...

AT 855 PM...TORNADO WATCH NUMBER 676 WAS CANCELLED FOR THE
FOLLOWING COUNTIES IN CENTRAL MINNESOTA...

BENTON...ISANTI...KANABEC...KANDIYOHI...MEEKER...MILLE
LACS...MORRISON...SHERBURNE AND TODD.

THE TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM FOR AREAS EAST AND
SOUTH OF A LINE FROM REDWOOD FALLS TO HUTCHINSON TO BUFFALO TO RUSH
CITY.

RAH