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Mesoscale Discussion 574
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   Mesoscale Discussion 0574
   NWS Storm Prediction Center Norman OK
   1039 PM CDT Wed Apr 27 2022

   Areas affected...the Texas and Oklahoma Panhandle vicinity

   Concerning...Severe Thunderstorm Watch 156...

   Valid 280339Z - 280545Z

   The severe weather threat for Severe Thunderstorm Watch 156

   SUMMARY...Local risk for gusty/damaging winds and/or marginal hail
   will continue for a couple more hours.

   DISCUSSION...Latest radar loop shows that convection has grown
   upscale over the past hour, congealing into a loosely organized line
   of storms stretching from Meade and Clark Counties in southwestern
   Kansas, southwestward to Dallam and Hartley Counties in the Texas

   The storms are ongoing within the remnant CAPE axis, now
   characterized by mixed-layer CAPE values of 500 to 1000 J/kg. 
   However, RAP-based objective analysis also indicates a gradual
   increase in capping across this region, occurring as a result of
   boundary-layer cooling evident in surface observational trends over
   the past couple of hours.  Eventually, this cooling/boundary-layer
   stabilization, and corresponding increase in capping, will result in
   a decrease in convective coverage/intensity -- hints of which have
   already been evident with more isolated storms away from the
   evolving line/band.  

   Until then, however, risk for a local gust or two at or near severe
   levels will continue -- with a recent gust of 52 MPH measured at the
   Sunray mesonet site in Sherman County TX.  A hailstone or two
   approaching severe levels will also remain possible over the next
   couple of hours.

   ..Goss.. 04/28/2022

   ...Please see for graphic product...


   LAT...LON   35300361 36090317 36410206 37050114 37539991 37309952
               36459991 35590077 35490157 35300361 

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