Special Weather Statement, NWS Duluth, MN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
313 PM CDT TUE JUL 5 2011

.DISCUSSION...THROUGH FRIDAY.

UPPER LEVEL HIGH WILL BE CENTERED OVER/NEAR THE CO/NM REGION
THROUGH THE PERIOD...WITH A RIDGE EXTENDING NORTH THROUGH THE
ROCKIES EARLY...GRADUALLY MOVING EAST TOWARD THE END OF THE PERIOD
TOWARD MINNESOTA.

A COLD FRONT WAS MOVING THROUGH NORTHWEST WISCONSIN THIS
AFTERNOON...WITH MAX CONVERGENCE OCCURRING OVER
ASHLAND/IRON/SAWYER/PRICE COUNTIES. A NICE AREA OF STORMS WERE
AROUND CLAM LAKE AREA. MLCAPES WERE AROUND 2000J/KG IN THIS
AREA...BUT SHEAR WAS LACKING. WE COULD STILL SEE SOME STRONG STORMS
OVER THE NEXT FEW HOURS. WE WILL INCLUDE AN EARLY EVENING POP OVER
OUR FAR EASTERN WISCONSIN ZONES...OTHERWISE HIGH PRESSURE WILL BUILD
IN TONIGHT AND WEDNESDAY AND PROVIDE CLEAR TO PARTLY CLOUDY SKIES
THROUGH WEDNESDAY.

THE FORECAST BECOMES MORE UNSETTLED WEDNESDAY NIGHT THROUGH FRIDAY.
A SURFACE/UPPER TROUGH WILL MOVE TOWARD NORTHWEST MINNESOTA LATE
WEDNESDAY NIGHT...AND MAY BE ENOUGH TO SET OFF SOME SHOWERS OR A
THUNDERSTORM INTO OUR NORTHWEST ZONES. THESE FEATURES CONTINUE
SOUTHEAST THURSDAY...AND THERE IS ENOUGH AGREEMENT AMONG THE MODELS
TO INCLUDE SOME POPS ALL AREAS. WE HAVE BEST CHANCE OVER OUR WESTERN
ZONES...AND DIMINISH OVER NORTHWEST WISCONSIN TO SLIGHT CHANCE.

WE DIMINISHED POPS THURSDAY NIGHT AS DAYTIME HEATING ENDS AND
SHORTWAVE MOVES THROUGH.

WE WENT WITH A DRY FORECAST ON FRIDAY. MIXED SIGNALS ARE BEING SENT
FROM THE VARIOUS MODELS REGARDING QPF. THE NAM SHOWS LITTLE LOW
LEVEL CONVERGENCE...AND LITTLE UPPER SUPPORT FOR RAIN. THE ECMWF
DOES SHOW A WEAK TROUGH OVER NORTHWEST WISCONSIN. WE HAD SOME SMALL
POPS OVER OUR WESTERN ZONES...BUT WE DON'T SEE MUCH SUPPORT FOR
THAT.

TEMPERATURES WILL BE SEASONABLE...WARMING A BIT TOWARD FRIDAY.

.EXTENDED...SATURDAY THROUGH TUESDAY

A LARGE RIDGE OF HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN FOR
THE WESTERN 2/3RD OF THE NATION THROUGH FRIDAY. HOWEVER...THE RIDGE
WILL GRADUALLY BREAK DOWN TOWARD THE END OF THE WEEK AS A TROF OF
LOW PRESSURE DIGS INTO THE WESTERN SEABOARD...SENDING BITS OF ENERGY
TO RIDE ACROSS THE RIDGE. A CLOSED LOW FORMS LATE IN THE WEEKEND
AND MOVES ACROSS SOUTHERN CANADA. THIS THE LONG-RANGE MODELS AGREE
ON. AT THE SURFACE THERE ARE SOME NOT-SURPRISING DISCREPANCIES WITH
THE SFC LOW AND SUBSEQUENT PRECIPITATION. WHAT THEY DO POINT TO IS
AN INCREASING SOUTHERN FLOW...BRING MORE WARM AND HUMID AIR INTO THE
REGION FOR THE WEEKEND. FOR NOW...BEST CHANCE OF WIDESPREAD
THUNDERSTORMS APPEARS TO BE SATURDAY INTO SUNDAY.

&&

.AVIATION...

ALTHOUGH VFR CONDITIONS WILL PREVAIL OVR THE FORECAST AREA
THROUGH THE NIGHT THERE WILL BE POCKETS OF MVFR THIS AFTERNOON .THE
CU FIELD OVR THE REGION WILL BE AOB 3K FT WITH  BE OCNL
CIGS BKN030. ISOLATED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
IN NORTHWEST WI.

&&

.POINT TEMPS/POPS...
DLH  56  78  55  79 /  10  10  10  30
INL  50  78  57  80 /  10  10  30  40
BRD  58  79  60  82 /  10   0  10  30
HYR  55  80  55  83 /  10   0  10  20
ASX  55  78  54  80 /  10   0  10  20

&&

.DLH WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
LS...NONE.
&&

SHORT TERM...MELDE
EXTENDED....CLC
AVIATION...CLC

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
338 PM CDT TUE JUL 5 2011

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-061030-
KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-
NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE-
SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA-
SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN-
CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-
BURNETT-WASHBURN-SAWYER-PRICE-
338 PM CDT TUE JUL 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND
NORTHWEST WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL BE POSSIBLE OVER MUCH OF NORTHWEST
WISCONSIN THIS AFTERNOON...SHIFTING TO MAINLY EASTERN AREAS EARLY
THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL BE POSSIBLE OVER NORTHWEST AREAS LATE WEDNESDAY
NIGHT...AND OVER MUCH OF THE NORTHLAND THURSDAY INTO THURSDAY
EVENING. THUNDERSTORMS WILL AGAIN BE POSSIBLE FRIDAY NIGHT THROUGH
THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED THIS AFTERNOON OR
TONIGHT.

LSZ121-140>148-061030-
BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
338 PM CDT TUE JUL 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
WESTERN LAKE SUPERIOR.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON OVER PORTIONS OF
THE SOUTH SHORE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WILL BE POSSIBLE ON THURSDAY...CONTINUING NEAR GRAND
MARAIS AND GRAND PORTAGE THURSDAY NIGHT. THUNDERSTORMS WILL RETURN
TO LAKE SUPERIOR FRIDAY NIGHT THROUGH THE WEEKEND.

MELDE

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS:
HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
435 PM CDT TUE JUL 5 2011

WIZ004-009-052215-
IRON-PRICE-
435 PM CDT TUE JUL 5 2011

...SOME STRONG THUNDERSTORMS REMAIN SOUTH OF THE GOGEBIC RANGE...

AT 432 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 22 MILES NORTHEAST
OF MUSSER LAKE TO 7 MILES SOUTHWEST OF KENNAN...MOVING SOUTHEAST AT
20 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING UP TO PENNY SIZE HAIL...WIND
GUSTS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS OF OVER AN INCH AN HOUR...

* THUNDERSTORMS WILL BE NEAR...
  CATAWBA BY 440 PM...
  PRENTICE BY 500 PM...
  OGEMA AND SPIRIT BY 515 PM...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.

LAT...LON 4538 9069 4559 9069 4607 8993 4605 8991
      4598 8992 4597 9003 4542 9003 4537 9011
      4537 9067

EOM

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