Oregon weather forecast: Moderate heat risks, possible thunderstorms

After a week of milder temperatures, it's expected to heat up again in Oregon with chances of thunderstorms — a reminder that summer isn't over yet.

National Weather Service in Portland issued a moderate heat risk advisory for most of Oregon from Sept. 2 through Sept. 4. A major heat risk advisory was issued for the Columbia Gorge, Hood River Valley and some urban areas between Salem and Portland.