* WHAT…Heat index values up to 102 expected.
* WHERE…Portions of west central Minnesota and northeast South
Dakota.
* WHEN…From 1 PM to 7 PM CDT Sunday.
* IMPACTS…Hot temperatures and high humidity may cause heat
illnesses.
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SPC Jun 22, 2025 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1215 PM CDT Sun Jun 22 2025 Valid 231200Z - 241200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL PLAINS NORTHEASTWARD TOWARD THE UPPER GREAT LAKES... ...SUMMARY... Strong to potentially severe storms are possible Monday from parts of the Great Lakes into the central Plains. ...Synopsis... A prominent upper high will be centered over the Appalachians, providing hot conditions over much of the eastern CONUS. Early in the day, a shortwave trough will exit the far northern Plains, ejecting across Ontario. Meanwhile
SPC – No watches are valid as of Sun Jun 22 17:19:02 UTC 2025
No watches are valid as of Sun Jun 22 17:19:02 UTC 2025.
SPC – No MDs are in effect as of Sun Jun 22 17:19:02 UTC 2025
No Mesoscale Discussions are in effect as of Sun Jun 22 17:19:02 UTC 2025.