Heat Advisory: San Juan County; Foothills and Valleys of Thurston and Lewis Counties; Olympia and Southern Puget Sound; Lowlands of Lewis and Southern Thurston Counties; Middle Chehalis River Valley; Willapa and Black Hills; Southern Hood Canal; Northern Hood Canal; Eastern Kitsap County; Port Townsend Area; Eastern Strait of Juan de Fuca; Lake Crescent Area Including US 101; Foothills of the Western and Southern Olympic Peninsula; Lower Chehalis River Valley; Island County

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Heat Advisory — San Juan County; Foothills and Valleys of Thurston and Lewis Counties; Olympia and Southern Puget Sound; Lowlands of Lewis and Southern Thurston Counties; Middle Chehalis River Valley; Willapa and Black Hills; Southern Hood Canal; Northern Hood Canal; Eastern Kitsap County; Port Townsend Area; Eastern Strait of Juan de Fuca; Lake Crescent Area Including US 101; Foothills of the Western and Southern Olympic Peninsula; Lower Chehalis River Valley; Island County Severity: Moderate. Certainty: Likely. * WHAT...Hot conditions with high temperatures up to 85 to 95 degrees expected and low temperatures from 55 to 58 degrees. This will pose a moderate risk of heat-related illness. * WHERE...Portions of northwest and west central Washington. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * 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.