WWUS20 KWNS 052220
SEL2
SPC WW 052220
IDZ000-NVZ000-UTZ000-WYZ000-060500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 392
NWS STORM PREDICTION CENTER NORMAN OK
420 PM MDT FRI JUL 5 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  SOUTHEAST IDAHO
  NORTHEAST NEVADA
  NORTHERN AND WESTERN UTAH
  WESTERN WYOMING

* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 420 PM UNTIL
  1100 PM MDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST
SOUTHWEST OF WENDOVER UTAH TO 35 MILES EAST NORTHEAST OF BIG
PINEY WYOMING.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 CONTINUE TO DEVELOP THIS AFTERNOON AHEAD
OF A SHORT-WAVE TROUGH SHIFTING EAST-SOUTHEAST ACROSS THE
WASHINGTON/OREGON VICINITY.  WITH ENHANCED WEST-SOUTHWESTERLY
MID-LEVEL FLOW SOUTHEAST OF THE TROUGH AND A RELATIVELY
MOIST/UNSTABLE ENVIRONMENT HAVING DIURNALLY EVOLVED...ISOLATED
SEVERE STORMS CAPABLE OF PRODUCING LOCALLY DAMAGING GUSTS AND LARGE
HAIL WILL LIKELY CONTINUE THROUGH THE MID EVENING TIME FRAME.

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.


...GOSS