NWS Storm Prediction Center Norman OK
0433 PM CDT Mon Sep 15 2025
AREAS AFFECTED...Much of Wyoming into far western South Dakota
CONCERNING...Severe potential...Watch unlikely
VALID 152133Z - 152330Z
PROBABILITY OF WATCH ISSUANCE...5 percent
SUMMARY...A few severe gusts may accompany the stronger storm cores
this afternoon into early evening.
DISCUSSION...High-based thunderstorms have gradually been increasing
in intensity this afternoon. These storms are overspreading a very
dry boundary layer, with RAP forecast soundings showing inverted-v
profiles extending up to 600 mb, resulting in up to 1200 J/kg DCAPE.
Furthermore, these ....... more