* WHAT...Hot conditions with high temperatures up to 90 to 95 degrees expected and low temperatures from 58 to 60 degrees. This will pose a moderate risk of heat-related illness. * WHERE...Foothills of the Western and Southern Olympic Peninsula, Middle Chehalis River Valley, Southern Hood Canal, Foothills and Valleys of Thurston and Lewis Counties, Lowlands of Lewis and Southern Thurston Counties, and Olympia and Southern Puget Sound. * WHEN...From 10 AM Tuesday to 11 PM PDT Wednesday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.