Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1230 PM CDT Sat Jun 21 2025 Valid 221200Z - 231200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE UPPER MISSISSIPPI VALLEY TO THE SOUTHERN HIGH PLAINS... ...SUMMARY... Severe thunderstorms remain possible on Sunday from parts of the central and northern Plains into the upper Midwest. Significant hail and wind are possible across parts of eastern North Dakota and northern Minnesota, along with some tornado potential. A few severe storms are also possible across the Northeast. ...Synopsis... Broad mid-level troughing will prevail across