NWS Storm Prediction Center Norman OK
0907 PM CDT Fri May 15 2026
AREAS AFFECTED...northeast Iowa into southern Wisconsin and far
northern Illinois
CONCERNING...Severe potential...Watch likely
VALID 160207Z - 160400Z
PROBABILITY OF WATCH ISSUANCE...80 percent
SUMMARY...Damaging wind potential is expected to increase in the
03-05z timeframe from west-to-east across the DISCUSSION area. An
additional downstream watch will likely be required prior to 03:00
UTC (10 PM CDT).
DISCUSSION...A couple supercell clusters are ongoing as of 02:00 UTC
(9 PM CDT) from north of Fort Dodge to near Charles City in northern
IA, with a general eastward ....... more