NWS Storm Prediction Center Norman OK
0517 PM CDT Sat Apr 27 2024
AREAS AFFECTED...Southeastern Iowa...Northwestern Illinois...and far
Northern Missouri
CONCERNING...Severe potential...Watch likely
VALID 272217Z - 272315Z
PROBABILITY OF WATCH ISSUANCE...80 percent
SUMMARY...Severe risk increasing. Watch likely to be issued within
the next hour.
DISCUSSION...Storm coverage has increased along the frontal boundary
extending through central Iowa to areas just north of the
Wisconsin/Illinois border. Air mass destabilization ahead of WW147
has yielded MLCAPE around 2000-3000 J/kg and modest deep layer
shear. VAD profiles from DMX depict a ....... more