Mesoscale Discussion 1135
   NWS Storm Prediction Center Norman OK
   0316 PM CDT Wed Jun 30 2021

   Areas affected...Portions of southern NH and coastal ME

   Concerning...Severe Thunderstorm Watch 326...

   Valid 302016Z - 302145Z

   The severe weather threat for Severe Thunderstorm Watch 326
   continues.

   SUMMARY...The greatest near-term severe threat across Severe
   Thunderstorm Watch 326 should remain across parts of southern New
   Hampshire and coastal Maine this afternoon.

   DISCUSSION...A narrow corridor of moderate instability (MLCAPE of
   1500 J/kg) remains present generally ahead of ongoing storms across
   parts of southern NH and coastal ME. Recent VWP from KGYX shows
   strong flow remains present in the 4-8 km layer AGL, with around
   40-50 kt of westerly winds estimated. Convection has shown signs of
   continued organization with around 40 kt of effective bulk shear,
   and a mix of marginal supercells and multicells has been observed
   over the past couple of hours. Occasional severe hail and strong to
   locally damaging winds are expected to to remain the primary severe
   threat as storms continue to move eastward towards the coast. The
   greatest damaging wind threat may focus with a small cluster of
   storms moving eastward across southern NH and vicinity, as low-level
   lapse rates are steepest there.

   ..Gleason.. 06/30/2021

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

   ATTN...WFO...CAR...GYX...

   LAT...LON   42787248 43217233 43657167 44557001 44916908 45246733
               45056695 44786694 44486749 44076890 43537021 42937076
               42857114 42747150 42787248