WATCHES: Severe Thunderstorm Watch Number 497

WWUS20 KWNS 262242
SEL7
SPC WW 262242
MNZ000-NDZ000-SDZ000-WIZ000-LSZ000-270600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 497
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT MON AUG 26 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTH CENTRAL MINNESOTA
SOUTHEAST NORTH DAKOTA
NORTHEAST SOUTH DAKOTA
NORTHWEST WISCONSIN
LAKE SUPERIOR

* EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 545 PM
UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 115 MILES WEST
SOUTHWEST OF DETROIT LAKES MINNESOTA TO 10 MILES SOUTHEAST OF
IRONWOOD MICHIGAN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

DISCUSSION...THUNDERSTORMS ARE INCREASING ACROSS NORTH CENTRAL MN IN
A REGION OF STRONG INSTABILITY AND FAVORABLE DEEP LAYER SHEAR.
STORMS ARE EXPECTED TO PERSIST THROUGH THE EVENING AND SPREAD
EAST-SOUTHEASTWARD ACROSS THE WATCH AREA. DAMAGING WINDS APPEAR TO
BE THE PRIMARY THREAT WITH THE STRONGEST STORMS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 28030.


...HART

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