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WWUS20 KWNS 031938

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SPC WW 031938

MTZ000-NEZ000-SDZ000-WYZ000-040200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 208

NWS STORM PREDICTION CENTER NORMAN OK

140 PM MDT TUE JUN 3 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST MONTANA

  NORTHWEST NEBRASKA

  WESTERN SOUTH DAKOTA

  NORTHEAST WYOMING



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 140 PM UNTIL

  800 PM MDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF

BROADUS MONTANA TO 60 MILES EAST SOUTHEAST OF DOUGLAS WYOMING.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU8).



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.



&&



OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 206. WATCH NUMBER 206 WILL NOT

BE IN EFFECT AFTER 140 PM MDT. CONTINUE...WW 207...



DISCUSSION...STORMS ARE EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THROUGH THE EVENING AS MID/UPPER LEVEL SHORTWAVE TROUGH

AND ASSOCIATED FORCING SPREAD EAST FROM THE ROCKIES...AIDING

DEVELOPMENT ACROSS A NARROW INSTABILITY AXIS ORIENTED FROM NEB

PANHANDLE NWWD TO ERN MT. DEEP-LAYER SHEAR WILL SUPPORT SUPERCELL

STRUCTURES AND UPDRAFT PERSISTENCE WITH LARGE HAIL AND DAMAGING

WINDS LIKELY FROM THIS ACTIVITY.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 26030.





...CARBIN

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