The thunderstorms are not expected to be severe, but localized impacts could include heavy downpours, gusty winds, and small hail. Lightning poses a safety risk, particularly for outdoor activities in the mountains or open areas. In Eastern Washington, the storms could exacerbate fire risks due to lightning and strong winds, with gusts reaching 30-40 mph in the Columbia Basin. There is also a risk of flash flooding in burn scar areas due to heavy downpours. Travelers in Eastern Washington should be cautious of potential blowing dust and reduced visibility.