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Severe Thunderstorm Watch 355
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WW0355 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL5

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 355
   NWS STORM PREDICTION CENTER NORMAN OK
   150 PM MDT WED JUN 25 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     SOUTHEAST MONTANA
     WESTERN NEBRASKA
     WESTERN SOUTH DAKOTA
     CENTRAL AND EASTERN WYOMING

   * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 150 PM
     UNTIL 900 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 105
   STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH OF
   BROADUS MONTANA TO 35 MILES EAST OF CHEYENNE WYOMING.  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.

   &&

   DISCUSSION...STORMS ARE EXPECTED TO INCREASE ACROSS THE REGION AS
   LARGE SCALE ASCENT ASSOCIATED WITH WEAK HEIGHT FALLS SPREADS EAST.
   VERY MOIST AIRMASS AND UPSLOPE FLOW WILL FURTHER CONTRIBUTE TO
   CONVECTIVE DEVELOPMENT...INITIALLY ACROSS HIGHER TERRAIN...AND THEN
   EAST ACROSS THE HIGH PLAINS. POCKETS OF EFFECTIVE SHEAR ON THE ORDER
   OF 30-35KT MAY SUPPORT A FEW SUPERCELLS WITH STORM MERGERS
   EVENTUALLY RESULTING IN LARGER COMPLEX OF STORMS SPREADING EAST THIS
   EVENING. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS.

   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 27025.


   ...CARBIN
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Page last modified: June 26, 2014
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