NWS Storm Prediction Center Norman OK
1251 PM CDT Sun Jun 21 2026
AREAS AFFECTED...Western Nebraska...northeast Colorado...and
northwest Kansas
CONCERNING...Severe potential...Watch likely
VALID 211751Z - 211945Z
PROBABILITY OF WATCH ISSUANCE...80 percent
SUMMARY...Conditions are being monitored for thunderstorm initiation
across the NE/CO/KS tri-state region, which may be within the next
1-2 hours. Watch issuance is likely at some point this afternoon.
DISCUSSION...Latest GOES imagery and surface observations show the
early stages of deepening cumulus in proximity to a diffuse surface
low and along low-level trough axes/confluence ....... more