RSS feed source: US National Weather Service

* AFFECTED AREA…Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY…As low as 20 to 30 percent. * TEMPERATURES…Up to 90 to near 100. * STABILITY…Unstable conditions can be expected. * IMPACTS…A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

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RSS feed source: US National Weather Service

* WHAT…Dangerously hot conditions with temperatures up to 98 to 104 degrees expected. This will pose a major to locally extreme risk of heat-related illness. * WHERE…Portions of north central and northeast Oregon and central, south central, and southeast Washington. * WHEN…Until 9 PM PDT Wednesday. * IMPACTS…Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS…Lingering cloud cover from thunderstorms in southern Oregon may result in lower than forecast afternoon temperatures or higher than forecast overnight low temperatures.

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RSS feed source: US National Weather Service

* WHAT…Hot conditions with temperatures 95 to 100 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE…In Oregon, Central Oregon, John Day Basin, and Grande Ronde Valley. In Washington, Northwest Blue Mountains. * WHEN…Until 9 PM PDT Wednesday. * IMPACTS…Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS…Lingering cloud cover from thunderstorms in southern Oregon may result in lower than forecast afternoon temperatures or higher than forecast overnight low temperatures.

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