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Mesoscale Discussion 846
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   Mesoscale Discussion 0846
   NWS Storm Prediction Center Norman OK
   0338 PM CDT Fri May 26 2017

   Areas affected...Southeastern Wyoming...eastern Colorado and
   adjacent portions of the high Plains

   Concerning...Severe Thunderstorm Watch 268...

   Valid 262038Z - 262215Z

   The severe weather threat for Severe Thunderstorm Watch 268
   continues.

   SUMMARY...Isolated to widely scattered discrete supercells will
   continue to develop across the watch area through the remainder of
   the afternoon.  Trends will be monitored for the possibility of an
   additional watch to the east of watch 268.

   DISCUSSION...A long-lived supercell storm (which earlier produced a
   tornado near I-80 in Sweetwater county) is passing near/just north
   and east of Rawlins, where sustained 3 mb 2-hour pressure falls have
   been observed in surface data.  This storm seems likely to maintain
   strength another couple of hours (at least into the western slopes
   of the Laramie Range), with continuing potential for severe hail,
   locally strong wind gusts, and perhaps another tornado.  Additional
   new storm development and intensification also appears possible to
   its south and east, near the I-80 corridor into the Laramie Range.

   East of the Laramies, southward along the Front Range, through
   eastern Colorado, isolated to widely scattered strong to severe
   storms development is now well underway, particularly to the
   northeast and east of Denver.  Further intensification of this
   activity, along with additional new discrete storm development,
   seems likely across the high Plains, as the boundary layer continues
   to heat, and CAPE becomes weak to moderate in the presence of very
   steep lapse rates.

   ..Kerr.. 05/26/2017

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

   ATTN...WFO...DDC...GLD...PUB...BOU...CYS...RIW...

   LAT...LON   42450730 42690554 41960434 40990359 40160248 39690178
               38580188 37700227 37180310 38230409 39090507 39620523
               40470569 41360726 42450730 

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Page last modified: May 26, 2017
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