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Severe Thunderstorm Watch 207
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WW0207 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 207
   NWS Storm Prediction Center Norman OK
   355 PM CDT Sat Jun 23 2018

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Parts of central and western Oklahoma
     Extreme northwest Texas

   * Effective this Saturday afternoon and evening from 355 PM until
     1000 PM CDT.

   * Primary threats include...
     Scattered large hail and isolated very large hail events to 2.5
       inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Thunderstorm development is expected in the next couple of
   hours along a stalled boundary near I-40, from the southern Oklahoma
   City metro area westward.  The storm environment favors supercells
   capable of producing very large hail and damaging winds.  A modest
   increase in low-level shear this evening could also support the
   threat for an isolated tornado, though this threat is secondary to
   the hail and wind.  Some clustering of storms and southward
   movement/development will be possible later this evening across the
   southern portions of the watch area.

   The severe thunderstorm watch area is approximately along and 50
   statute miles north and south of a line from 30 miles west southwest
   of Clinton OK to 50 miles north northeast of Ardmore OK. 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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 205...WW 206...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 600. Mean storm motion vector
   30015.

   ...Thompson
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