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000 

WWUS20 KWNS 061804

SEL2

SPC WW 061804

MTZ000-NEZ000-SDZ000-WYZ000-070000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 352

NWS STORM PREDICTION CENTER NORMAN OK

1205 PM MDT WED JUN 6 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHEAST MONTANA

       PART OF NEBRASKA PANHANDLE

       PART OF WESTERN SOUTH DAKOTA

       PARTS OF EASTERN WYOMING



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1205 PM UNTIL

600 PM MDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 115 STATUTE

MILES EAST AND WEST OF A LINE FROM 10 MILES WEST SOUTHWEST OF

TORRINGTON WYOMING TO 40 MILES NORTH NORTHEAST OF BROADUS

MONTANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...APPROACH OF INTENSE UPPER TROUGH AND RAPIDLY DEEPENING

SURFACE LOW OVER CENTRAL WY...EXPECTED TO SUPPORT SEVERE

THUNDERSTORM DEVELOPMENT ACROSS WATCH.  40-50 KT OF DEEP LAYER SHEAR

AND FAVORABLE LOW LEVEL HODOGRAPHS SUPPORT SUPERCELLS INCLUDING

LARGE HAIL AND ISOLATED TORNADOES.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 24025.





...HALES

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