ACUS11 KWNS 282035
SWOMCD
SPC MCD 282035
NEZ000-COZ000-282230-

Mesoscale Discussion 1787
NWS Storm Prediction Center Norman OK
0335 PM CDT Tue Jul 28 2026

Areas affected...Northern Colorado to far southwest Nebraska

Concerning...Severe Thunderstorm Watch 528...

Valid 282035Z - 282230Z

The severe weather threat for Severe Thunderstorm Watch 528
continues.

SUMMARY...Large hail remains the primary severe threat across the
Front Range and into far southwest Nebraska. However, a transition
to predominantly severe wind is expected through the evening hours.

DISCUSSION...Latest regional radar imagery and MRMS VII imagery
continues to show robust updraft development both along the higher
terrain and along subtle low-level confluence axes. Velocity data
also depicts rapid outflow development with cells across the High
Plains with new updraft development noted along outflow collisions.
New cell development will continue along these boundaries for the
next hour or two with an attendant threat for large hail. With time,
continued outflow expansion will promote thunderstorm clustering and
upscale growth - most likely between the I-70 to I-76 corridors. As
this occurs, storm motion will become increasingly dominated by cold
pool propagation, which should support an uptick in severe wind
potential. Based on output from recent high-res guidance, this
transition may begin around the 5-7 PM MDT time frame.

..Moore.. 07/28/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!_6WfVJuF7WSNVBKSzDiGzGi4M-hPdY0wHzECkxQnq2pWbq5Keovj-aIuJAaanfe4lGV_NFbErJG7iWtj4tccgsDdn8E$ for graphic product...

ATTN...WFO...LBF...GLD...PUB...BOU...CYS...

LAT...LON 38710385 38770438 38930498 39260530 39760544 40200533
40580481 41250349 41560283 41710244 41680220 41550201
41340200 41080212 40680243 40160278 39800297 39550300
39170306 38890330 38780352 38710385

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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