Storm Prediction Center Mesoscale Discussion 1563

   Mesoscale Discussion 1563
   NWS Storm Prediction Center Norman OK
   0606 PM CDT Thu Jul 09 2026

   Areas affected...Portions of the Mid-Atlantic Coastal States

   Concerning...Severe Thunderstorm Watch 474...

   Valid 092306Z - 100030Z

   The severe weather threat for Severe Thunderstorm Watch 474
   continues.

   SUMMARY...The threat for damaging winds continues across WW 474 as a
   line of strong to severe thunderstorms moves eastward, and
   eventually, offshore. Thunderstorm wind gusts of 55-70 MPH remain
   possible.

   DISCUSSION...Linear convection within WW 474 continues to move
   east-southeast across the Mid-Atlantic coastal states and will
   continue to pose a hazard for damaging straight-line wind gusts.
   Sufficient buoyancy and deep-layer shear will continue to support
   linear bowing segments before ultimately moving offshore into the
   Atlantic. The best short-term corridor for damaging wind gusts
   appears to be across portions of Virginia and Maryland, where the
   combination of MLCAPE and deep-layer shear is best maximized and
   current radar trends suggest the strongest updrafts have developed.

   ..Halbert.. 07/09/2026

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...PHI...AKQ...LWX...

   LAT...LON   37897773 38107747 38367699 38567660 38727642 38927613
               39137595 39387581 39537573 39787524 39637457 39227421
               38107487 37517536 37387566 37457612 37537649 37627692
               37667722 37787753 37897773 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH