Mesoscale Discussion 1535
   NWS Storm Prediction Center Norman OK
   0107 PM CDT Thu Jul 21 2022

   Areas affected...New England

   Concerning...Severe Thunderstorm Watch 479...

   Valid 211807Z - 212000Z

   The severe weather threat for Severe Thunderstorm Watch 479
   continues.

   SUMMARY...Wind damage and an isolated tornado threat will continue
   across the western and central parts of WW 479 this afternoon. The
   severe threat is expected to move eastward into parts of Maine over
   the next few hours.

   DISCUSSION...The latest mosaic imagery shows a cluster of strong to
   severe storms from northern New York extending eastward and
   southward across western New England. The strongest storms are
   located in west-central New England along an axis of moderate
   instability, with the RAP analyzing MLCAPE in the 2000 to 2500 J/kg.
   Amid the larger cluster, a well-developed supercell is ongoing in
   western New Hampshire. The instability combined with 0-6 km shear in
   the 40 to 50 knot range according to the RAP, will continue to
   support supercell development. Supercells should be capable of wind
   damage and perhaps a brief tornado or two. However, the latest HRRR
   suggests that convective coverage will continue to rapidly increase.
   This will favor linear development along the instability axis. This
   line is expected to become increasing organized and move into
   western Maine within a few hours. The stronger parts of the line are
   expected to be associated with wind damage.

   ..Broyles.. 07/21/2022

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

   ATTN...WFO...CAR...GYX...BOX...BTV...OKX...ALY...

   LAT...LON   42547167 42867111 43187024 43546952 43896917 44356886
               45136890 45846905 46116944 45977013 45407099 44977203
               44607285 43967344 43427360 42807364 42067365 41657365
               41447342 41437291 41817244 41987229 42247207 42547167