Storm Prediction Center Mesoscale Discussion 1188

   Mesoscale Discussion 1188
   NWS Storm Prediction Center Norman OK
   0306 PM CDT Thu Jun 18 2026

   Areas affected...portions of New England

   Concerning...Tornado Watch 353...

   Valid 182006Z - 182130Z

   The severe weather threat for Tornado Watch 353 continues.

   SUMMARY...Thunderstorms to continue eastward for the next couple of
   hours. Threat for damaging wind and isolated tornadoes will
   continue.

   DISCUSSION...A line of thunderstorms continues eastward across
   eastern Maine into Massachusetts and northern Connecticut. These
   storms have produced reports of wind damage and gusts up to 60-64
   mph this afternoon. While thermo profiles have been marginal, the
   near surface and mid-level flow remains strong. The low-level jet
   axis has begun to shift offshore, however, deep layer flow around
   40-50 kts remains near the coast into portions of eastern/central
   Maine. Damaging wind and isolated tornado potential will continue
   for another 1-2 hours within WW353 before gradual weakening and
   storms shift offshore.

   ..Thornton.. 06/18/2026

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

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

   LAT...LON   42957247 43747183 44667128 44667048 44216989 43716983
               42987040 42077157 41507225 41817293 42307302 42957247 

   MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH