WWUS20 KWNS 272056
SEL6
SPC WW 272056
MTZ000-SDZ000-WYZ000-280400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 456
NWS STORM PREDICTION CENTER NORMAN OK
300 PM MDT MON JUL 27 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  EASTERN MONTANA
  WESTERN SOUTH DAKOTA
  NORTHEAST WYOMING

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
  1000 PM MDT.

* PRIMARY THREATS INCLUDE...
  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...THUNDERSTORMS ARE FORECAST TO INCREASE IN
COVERAGE/INTENSITY OVER THE NEXT FEW HOURS...SPREADING NORTHEAST
WITH TIME ACROSS THE WW AREA.  LARGE HAIL AND DAMAGING WINDS WILL BE
THE PRIMARY SEVERE RISKS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
STATUTE MILES EAST AND WEST OF A LINE FROM 80 MILES NORTHWEST OF
GLASGOW MONTANA TO 60 MILES SOUTHWEST OF RAPID CITY SOUTH DAKOTA.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).

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 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 22035.


...GOSS