Mesoscale Discussion 1660
   NWS Storm Prediction Center Norman OK
   0614 PM CDT Tue Jul 16 2024

   Areas affected...Southern New Hampshire and northern Massachusetts

   Concerning...Severe Thunderstorm Watch 549...

   Valid 162314Z - 170115Z

   The severe weather threat for Severe Thunderstorm Watch 549
   continues.

   SUMMARY...The severe wind threat across WW 549 will mostly remain
   focused across southern New Hampshire and northern Massachusetts for
   the next 2 hours before a line of storms moves off shore. Wind gusts
   upwards of 55 to 65 mph appear possible based on environmental
   conditions and recent observations.

   DISCUSSION...A well-organized MCS continues to push east across the
   New England region with a recent wind report of 66 mph noted in
   Berkshire county, MA within the last hour. Temperatures are falling
   into the low to mid 70s in the wake of the line, indicating that a
   deep cold pool remains in place and should help maintain MCS
   intensity for the near-term with wind gusts up to 55-65 mph
   possible. This assertion is supported by recent velocity imagery
   from KENX, which shows at least two focused corridors of stronger
   winds within the line. Immediately downstream of the MCS, a plume of
   relatively higher theta-e is noted in recent surface
   observations/analyses as low 70s dewpoints continue to advect
   northward. This local corridor of better buoyancy should also help
   maintain MCS intensity as it translates eastward towards the New
   England coast. Latest timing estimates suggest the gust front should
   reach the coast roughly around 01 UTC, though the severe wind threat
   may persist after 01 UTC for far southern Maine.

   ..Moore.. 07/16/2024

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

   ATTN...WFO...GYX...BOX...ALY...

   LAT...LON   42397311 42587285 42847261 43117239 43297219 43407212
               43667015 43477033 43247058 42987076 42797080 42647073
               42577074 42487086 42397311