![]() | MESOSCALE DISCUSSION 1165 NWS Storm Prediction Center Norman OK 0103 PM CDT Wed Jun 17 2026 AREAS AFFECTED...portions of northern/central Missouri...western Illinois CONCERNING...Severe potential...Watch likely VALID 171803Z - 172000Z PROBABILITY OF WATCH ISSUANCE...95 percent SUMMARY...Thunderstorm development likely by the afternoon with potential for all hazards including damaging wind, large hail, and STRONG TORNADOes. DISCUSSION...Morning convection has moved into central/eastern Illinois, with trailing outflow and a zone of differential heating extending across northern Missouri into south-central Illinois. This zone will be the focus of redevelopment ....... more |
![]() | MESOSCALE DISCUSSION 1164 NWS Storm Prediction Center Norman OK 1237 PM CDT Wed Jun 17 2026 AREAS AFFECTED...portions of the upper Mississippi River Valley CONCERNING...Severe potential...Watch possible VALID 171737Z - 171900Z PROBABILITY OF WATCH ISSUANCE...60 percent SUMMARY...A few severe thunderstorms will develop from portions of southeastern Minnesota into northeastern Iowa and southwestern Wisconsin this afternoon, with a threat for primarily large hail and strong/DAMAGING WIND GUSTS. DISCUSSION...Regional radar imagery depicts increasing thunderstorm activity in close proximity to a surface low analyzed west of Minneapolis, MN, and immediately ....... more |