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Mesoscale Discussion 905
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   Mesoscale Discussion 0905
   NWS Storm Prediction Center Norman OK
   0446 PM CDT Sun May 28 2017

   Areas affected...Northwestern Pennsylvania...northern
   Ohio...southeastern Lower Michigan...and northeastern Indiana

   Concerning...Severe Thunderstorm Watch 292...

   Valid 282146Z - 282245Z

   The severe weather threat for Severe Thunderstorm Watch 292
   continues.

   SUMMARY...The severe threat continues for WW 292, and an isolated
   severe threat exists across northwestern Pennsylvania and central
   Indiana in the short term.

   DISCUSSION...Scattered, mainly hail-producing storms continue across
   remaining valid portions of WW 292 at this time.  A few severe wind
   gusts have also been reported with some of the activity.  These
   storms are mostly multicellular in nature, with marginal deep shear
   on the southern fringes of the watch for any storm organization. 
   Continued moderate (1000-1500 J/kg MUCAPE) will continue to foster a
   severe threat with the strongest, most organized activity.  A
   limited severe threat will also exist southwest of the watch into
   central Indiana, where a few linear segments have developed and are
   beginning to propagate eastward toward the Indianapolis Metro area. 
   Additionally, a north-south oriented surface trough over western
   Pennsylvania has aided in some brief supercell structures in that
   region (most recently in Clarion County, PA) and large hail.  This
   brief supercell threat will continue through dark, although the
   severe threat should remain isolated enough that a WW
   extension/replacement shouldn't be needed.

   ..Cook.. 05/28/2017

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

   ATTN...WFO...BUF...CTP...PBZ...CLE...ILN...DTX...IWX...GRR...
   IND...

   LAT...LON   42788357 42898301 42728268 42348276 41918258 41778197
               41968118 42108049 42178012 42017927 41747885 41287864
               40917884 40807940 40818007 41048114 40958194 40738299
               40578410 40368462 40098543 39938616 39798670 40358676
               41198584 41808455 42388383 42788357 

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Page last modified: May 28, 2017
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