

943 

WWUS20 KWNS 101945

SEL8

SPC WW 101945

MTZ000-NDZ000-SDZ000-110300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 368

NWS STORM PREDICTION CENTER NORMAN OK

145 PM MDT SUN JUL 10 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST MONTANA

  SOUTHWEST AND WEST CENTRAL NORTH DAKOTA

  EXTREME NORTHWEST SOUTH DAKOTA



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 145 PM UNTIL

  900 PM MDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS

    TO 75 MPH POSSIBLE

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2.5 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...THUNDERSTORMS ARE BEGINNING TO DEVELOP IN SOUTHEAST AND

EAST CENTRAL MONTANA...AND THE STORMS WILL LIKELY INCREASE IN

COVERAGE/INTENSITY THROUGH THE AFTERNOON/EVENING WHILE SPREADING

INTO NORTH DAKOTA.  THE STORM ENVIRONMENT WILL FAVOR SUPERCELLS

CAPABLE OF PRODUCING LARGE HAIL/DAMAGING WINDS WITH THE INITIAL MORE

DISCRETE STORMS...WHILE STORMS SHOULD GROW UPSCALE INTO A LARGER

CLUSTER WITH MORE WIDESPREAD WIND DAMAGE POTENTIAL LATER THIS

EVENING.  AN ISOLATED TORNADO OR TWO WILL ALSO BE POSSIBLE THIS

AFTERNOON WITH THE INITIAL SUPERCELLS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTH

SOUTHWEST OF MILES CITY MONTANA TO 30 MILES EAST OF DICKINSON

NORTH DAKOTA.  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.



&&



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 24035.





...THOMPSON

