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Severe Thunderstorm Watch 318
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WW0318 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.
   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 318
   NWS Storm Prediction Center Norman OK
   245 PM MDT Mon Jun 12 2017

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     South Central Montana
     Northern Wyoming

   * Effective this Monday afternoon and evening from 245 PM until
     1000 PM MDT.

   * Primary threats include...
     Scattered large hail likely with isolated very large hail events
       to 2 inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Scattered strong to severe thunderstorms are expected to
   develop and spread across the watch area this afternoon and evening.
    Large hail and damaging winds will be possible in the strongest
   cells, along with the potential of an isolated tornado.

   The severe thunderstorm watch area is approximately along and 80
   statute miles north and south of a line from 15 miles north
   northwest of Livingston MT to 55 miles north northeast of Casper WY.
   For a complete depiction of the watch see the associated watch
   outline update (WOUS64 KWNS WOU8).

   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 316...WW 317...

   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 400. Mean storm motion vector
   21035.

   ...Hart
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Page last modified: June 13, 2017
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