Storm Prediction Center Mesoscale Discussion 1708

   Mesoscale Discussion 1708
   NWS Storm Prediction Center Norman OK
   1214 PM CDT Wed Jul 22 2026

   Areas affected...A large portion of Maine

   Concerning...Severe potential...Watch possible 

   Valid 221714Z - 221845Z

   Probability of Watch Issuance...40 percent

   SUMMARY...A gradual increase in storm coverage and intensity is
   expected through the afternoon. A watch may be needed.

   DISCUSSION...Storms have started to develop across western Maine
   where temperatures are in the mid 70s with dewpoints in the mid 60s
   F. Continued heating ahead of this activity will result in greater
   destabilization this afternoon and additional storm coverage. 35 to
   40 knots of shear is in place (per SPC mesoanalysis and regional
   VWPs) which will aid in storm organization including some supercell
   structures. The relatively weak instability casts some doubt on the
   total coverage of severe storms, but if several severe storms can
   develop, a severe thunderstorm watch may need to be issued.

   ..Bentley/Thompson.. 07/22/2026

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

   ATTN...WFO...CAR...GYX...

   LAT...LON   45997046 46667011 47246951 47576918 47406882 47446820
               47066765 45776774 45246834 44026955 42957076 43327092
               44587112 45477085 45997046 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN