Storm Prediction Center Mesoscale Discussion 1287

   Mesoscale Discussion 1287
   NWS Storm Prediction Center Norman OK
   1003 PM CDT Tue Jun 23 2026

   Areas affected...portions of central and eastern Colorado

   Concerning...Severe Thunderstorm Watch 385...

   Valid 240303Z - 240430Z

   The severe weather threat for Severe Thunderstorm Watch 385
   continues.

   SUMMARY...An uptick in severe hail is expected over the next several
   hours. A few severe gusts are also possible.

   DISCUSSION...Multiple supercells have recently initiated and matured
   across portions of central into northeastern Colorado amid an
   increase in 700 mb WAA. MRMS mosaic radar imagery suggests severe
   hail is falling with these storms, with some stones potentially
   reaching the 2-4 inch diameter range in Morgan County. 02Z
   mesoanalysis depicts 3000-4000 J/kg MLCAPE and 60+ kts of effective
   bulk shear in proximity to these storms, so the ambient environment
   supports an increase in the production of significant-severe hail
   and perhaps some severe gusts for any supercells that can become
   sustained.

   ..Squitieri.. 06/24/2026

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

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

   LAT...LON   38180420 38830460 39680476 40220470 40560447 40700397
               40530312 39980261 39110227 38430234 38130338 38180420 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
   MOST PROBABLE PEAK WIND GUST...65-80 MPH
   MOST PROBABLE PEAK HAIL SIZE...2.75-4.25 IN