* WHAT...High temperatures between 92 and 98 degrees and low temperatures between 58 and 66 degrees will produce widespread Moderate HeatRisk today and Monday. Major HeatRisk will be most widespread in the Portland/Vancouver Metro, Columbia River Gorge, and Hood River Valley where temperatures will be the hottest.

* WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, Lower Columbia River and Cowlitz River Valleys, and South Washington Cascade Foothills.

* WHEN...Until 10 PM PDT Monday.

* IMPACTS...Exposure to hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Moderate HeatRisk is the level of heat that affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts are possible in some health systems and in heat-sensitive industries. Major HeatRisk is the level of heat that affects anyone without effective cooling and/or adequate hydration. Impacts are likely in some health systems, heat-sensitive industries, and infrastructure.