Storm Prediction Center Mesoscale Discussion 1578

   Mesoscale Discussion 1578
   NWS Storm Prediction Center Norman OK
   0829 PM CDT Wed Jul 10 2024

   Areas affected...portions of NH and western ME

   Concerning...Tornado Watch 520...

   Valid 110129Z - 110300Z

   The severe weather threat for Tornado Watch 520 continues.

   SUMMARY...A severe storm or two remains possible in the short term,
   but overall risk is expected to wane over the next 1-2 hours.

   DISCUSSION...Instability has decreased over the past hour as the
   boundary-layer begins to cool post-sunset and low-level inhibition
   increases. While low-level shear may still support weak rotation in
   the vicinity of the warm front, meager 0-3 km MLCAPE should limit
   tornado potential as the boundary layer continues to stabilize this
   evening. While a brief spin-up or strong gust is possible in the
   short term, overall severe potential is expected to decrease with
   time over the next 1-2 hours. As such, Tornado Watch 520 may be
   allowed to expire at or before 04z.

   ..Leitman.. 07/11/2024

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

   ATTN...WFO...GYX...BTV...

   LAT...LON   44627179 44857127 44837071 44657038 44557038 44137042
               43597090 43437146 43617202 43837214 44507201 44627179