Event Brief
Heat dome expands from interior West to Upper Midwest
Filed: Jul 12, 2026 at 10:00 PM ET
Summary: A major heat dome with high temperatures expanded from the interior West into the Upper Midwest on Sunday.
WHO: Major heat dome
WHAT: High temperatures expanded from the interior West into the Upper Midwest
WHEN: Jul 12, 2026 at 7:40 PM ET
WHERE: Upper Midwest, USA
WHY: Cause not yet established.
ℹ️ This event is analyzed using pattern arcs, velocity indicators, and source analysis in our MI Console.
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