Heat Advisory

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Seattle WA 239 PM PDT Mon Jul 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TUESDAY TO 11 PM PDT WEDNESDAY... * WHAT...Hot conditions with high temperatures up to 95 degrees expected and low temperatures from 60 to 65 degrees. This will pose a moderate to major risk of heat-related illness. * WHERE...Eastern Kitsap County, City of Seattle, Downtown Everett / Marysville Area, Eastside, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, Lowlands of Pierce and Southern King Counties, and Shoreline / Lynnwood / South Everett Area. * 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. * ADDITIONAL DETAILS...Areas closest to the water will experience cooler daytime high temperatures. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. For sheltering information and other human services in your area, dial 2 1 1 during business hours or visit wa211.org anytime.