Severe Local Storm Watch and Watch Cancellation Msg
Issued by NWS

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000
WWUS20 KWNS 232208
SEL5
SPC WW 232208
IDZ000-MTZ000-WAZ000-240500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 435
NWS STORM PREDICTION CENTER NORMAN OK
410 PM MDT WED JUL 23 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
  NORTHERN IDAHO
  NORTHWESTERN MONTANA
  EASTERN WASHINGTON

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 410 PM
  UNTIL 1100 PM MDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 110
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST
SOUTHWEST OF SPOKANE WASHINGTON TO 50 MILES NORTHEAST OF MISSOULA
MONTANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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...CONTINUE...WW 431...WW 432...WW
433...WW 434...

DISCUSSION...SEASONALLY STG JUXTAPOSITION OF BOUNDARY-LAYER MOISTURE
AND FAVORABLE DEEP-LAYER KINEMATIC PROFILES -- E.G. 50S SFC DEW
POINTS IN LOWER ELEVATIONS AND 40-50 KT EFFECTIVE-SHEAR MAGNITUDES
RESPECTIVELY -- WILL SUPPORT SVR POTENTIAL WITH CONVECTION
INCREASING IN COVERAGE/INTENSITY ATTM ACROSS PORTIONS ERN WA.
ADDITIONAL DEVELOPMENT OVER MTNS OF NRN ID/WRN MT ALSO WILL POSE SVR
WIND/HAIL RISK AS IT MOVES NEWD.

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 450. MEAN STORM
MOTION VECTOR 22040.


...EDWARDS


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