Mesoscale Discussion 0937
   NWS Storm Prediction Center Norman OK
   0620 PM CDT Sat Jun 01 2019

   Areas affected...eastern CO

   Concerning...Severe potential...Watch possible 

   Valid 012320Z - 020015Z

   Probability of Watch Issuance...40 percent

   SUMMARY...It appears additional storm development and a
   longer-than-anticipated severe risk (into the evening hours) may
   yield a continued threat for large hail (1-2 inches in
   diameter)/severe gusts (60-70mph) for the next few hours.  It is
   unclear whether a severe thunderstorm watch is warranted for the
   ongoing activity as it moves southeast this evening.

   DISCUSSION...Radar imagery during the past 2 hours has shown a
   longer-lived severe storm near the Palmer Divide and it recently has
   shown a tendency to amass additional convection on the flanking line
   as it moves southeast.  A left-mover near Pueblo recently developed
   and will likely pose a risk for large hail before interacting with
   the thunderstorm cluster to the north.  Moist southeasterly upslope
   flow into the Palmer Divide cluster will probably enable storm
   persistence well into the evening.  KPUB VAD showed 35kt westerly
   flow at 6km ARL which is resulting in around 45kt effective shear. 
   Deep shear supportive of storm organization and a destabilized
   boundary layer over southeast CO suggest hail/wind may continue for
   the next few hours with the stronger storms.

   ..Smith/Thompson.. 06/01/2019

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

   ATTN...WFO...GLD...PUB...BOU...

   LAT...LON   37820450 38590458 39110439 39270370 39010314 37720279
               37820450