Mesoscale Discussion 0853
   NWS Storm Prediction Center Norman OK
   0120 PM CDT Sat Jun 06 2020

   Areas affected...Southern ME...NH...Much of MA...Northern
   CT...Northern RI

   Concerning...Severe Thunderstorm Watch 260...

   Valid 061820Z - 061945Z

   The severe weather threat for Severe Thunderstorm Watch 260
   continues.

   SUMMARY...The threat for severe hail and damaging wind gusts will
   continue from southern ME through much of southern New England for
   the next few hours.

   DISCUSSION...Recent surface analysis places the pre-frontal trough
   from far southern ME (near PWM) southwestward into the Hudson
   Valley. The cold front lags this boundary by 30-40 miles. Much of
   the activity along the pre-frontal trough across southern ME and NH
   has dissipated, but new development is beginning along the front
   across southern NH. Downstream air mass continues to be modestly
   unstable and strongly sheared, suggesting this new development will
   continue to pose a risk for severe hail and strong wind gusts.
   Visible satellite imagery also appears to depict a east-west outflow
   boundary from about 10 miles south of PWM west to 10-15 miles
   east-northeast of LCI. This boundary could augment any updrafts that
   intersect it while also contributing to some stabilization in its
   wake.

   Farther south, storms continue along the pre-frontal trough across
   central MA and back into western CT. Lightning has been sporadic
   with these storms, suggesting updrafts are struggling to maintain
   intensity. This is likely due to the warm temperatures aloft.
   However, slightly stronger instability is anticipated downstream
   where temperatures are now in the mid to upper 80s, with a few
   isolated locations in the 90s. Given these conditions, the threat
   for damaging wind gusts and isolated hail will continue.

   ..Mosier.. 06/06/2020

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

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

   LAT...LON   41777325 44597101 44596858 41757092 41777325