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Severe Thunderstorm Watch 357
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WW0357 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.
   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 357
   NWS STORM PREDICTION CENTER NORMAN OK
   130 PM MDT THU JUN 26 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     EASTERN MONTANA
     NORTHEAST WYOMING

   * EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 130 PM UNTIL
     900 PM MDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
       INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
   STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH
   NORTHEAST OF GLASGOW MONTANA TO 60 MILES SOUTH SOUTHWEST OF
   GILLETTE WYOMING.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

   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...MID/UPPER LEVEL TROUGH AND ASSOCIATED 40-50KT WIND MAX
   WILL SPREAD NEWD ACROSS AN INCREASINGLY UNSTABLE AIRMASS ACROSS NERN
   WY AND ERN MT THROUGH THE AFTERNOON. SEVERAL ROUNDS OF STRONG TO
   SEVERE STORMS APPEAR POSSIBLE AS HEATING AND LARGE SCALE ASCENT ACT
   TO REMOVE REMAINING CONVECTIVE INHIBITION AND ALLOW ROBUST STORMS TO
   DEVELOP. WEAK LOW LEVEL E-SELY FLOW TOPPED BY 40-50KT SWLY MID-LEVEL
   FLOW WILL SUPPORT STORM UPDRAFT ROTATION AND PERSISTENCE WITH
   MAGNITUDE OF CAPE/SHEAR FAVORING LARGE HAIL AND PERHAPS EVEN A BRIEF
   TORNADO. ACTIVITY MAY CONGEAL INTO SMALL CONVECTIVE COMPLEX BY
   EVENING WITH SOME WIND DAMAGE POTENTIAL ACCOMPANYING THAT UPSCALE
   DEVELOPMENT PROCESS.

   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 25020.


   ...CARBIN
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Page last modified: June 27, 2014
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