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Mesoscale Discussion 1692
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   Mesoscale Discussion 1692
   NWS Storm Prediction Center Norman OK
   0553 PM CDT Sat Aug 10 2019

   Areas affected...portions of the Pacific Northwest eastward to the
   northern high Plains

   Concerning...Severe Thunderstorm Watch 567...568...

   Valid 102253Z - 110100Z

   The severe weather threat for Severe Thunderstorm Watch 567, 568

   SUMMARY...Scattered strong/locally severe storms continue across a
   large portion of the northern Intermountain region, and vicinity. 
   Locally damaging winds will remain the primary risk, though large
   hail also remains possible locally.

   DISCUSSION...The latest WV loop shows an upper low centered over
   northern California, with a pronounced dry slot extending from
   central and southern California across the Great Basin and into
   southeast Idaho.  On either side of -- and near the nose of -- this
   dry slot, scattered thunderstorms continue to develop late this
   afternoon.  Given the relatively moist/unstable airmass in an
   anticyclonic arc from eastern portions of the Pacific Northwest
   across western and northern Idaho and Montana, and into the northern
   high Plains, expect storms to continue across this region for
   several hours.

   A belt of fast/diffluent flow resides across this region --
   sandwiched between the northern California upper low, and stout
   ridging over the central U.S.  This flow will continue to support
   organized/rotating storms, locally capable of gusty/damaging winds
   and hail.

   ..Goss.. 08/10/2019

   ...Please see for graphic product...


   LAT...LON   42021689 43411889 45031933 46641810 46811623 47431527
               47640889 45710139 42870119 42610259 43230651 44201041
               44501382 44031450 41921479 41681651 42021689 

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