Storm Prediction Center Mesoscale Discussion 1493

   Mesoscale Discussion 1493
   NWS Storm Prediction Center Norman OK
   0221 PM CDT Sun Jun 30 2024

   Areas affected...portions of Maine into New Hampshire

   Concerning...Severe Thunderstorm Watch 490...

   Valid 301921Z - 302115Z

   The severe weather threat for Severe Thunderstorm Watch 490
   continues.

   SUMMARY...Severe thunderstorms producing strong/damaging gusts
   remain possible across southern New Hampshire into coastal and Down
   East Maine.

   DISCUSSION...The strongest convection ongoing this afternoon is
   along a pre-frontal surface trough and within the axis of greater
   instability and low-level moisture. A line of strong to severe
   storms producing wind damaging will continue to shift east/southeast
   across Down East Maine the next couple of hours. Additional more
   isolated convection is ongoing across New Hampshire and will shift
   into coastal Maine, also posing a damaging wind risk. Additional
   storms may move into northern Maine in association with the synoptic
   cold front. However, cooler temperatures and lower dewpoints are
   resulting in weaker instability with northward extent, and severe
   potential will be a bit lower compared to further south.

   ..Leitman.. 06/30/2024

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

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

   LAT...LON   44187148 46256775 46016720 45236687 44656698 43206925
               42817082 42737191 42817247 43357238 43887210 44187148