Heat advisory in place for Lowlands of Pierce and Southern King counties from Sunday to Tuesday

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At 12:38 p.m. on Thursday, the NWS Seattle WA released a heat advisory valid from Sunday 11 a.m. until Tuesday 5 a.m. for Lowlands of Pierce and Southern King counties.

"Hot conditions with high temperatures up to 90 degrees to 95 degrees and low temperatures down to 60 to 65 degrees expected. This will pose a moderate risk of heat-related illness," describes the NWS. "The warmest daytime high temperatures are expected Monday afternoon and the warmest overnight lows are expected Monday night into Tuesday morning. Areas away from water may see localized areas of major HeatRisk, particularly through the Kent-Auburn Valley and in the Tacoma area."

"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," says the NWS.

This advisory is in effect until Tuesday at 5 a.m.

Ways to stay safe in the heat according to the NWS

• Stay hydrated: Drink plenty of fluids.
• Seek cool shelter: Opt for an air-conditioned room to stay comfortable.
• Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.
• Child and pet welfare: Never forget to safeguard young children and pets by not leaving them unattended in vehicles, especially during scorching weather when car interiors can become life-threateningly hot.
• Take extra precautions outdoors: If you work or spend time outside, be sure to take additional safety measures.
• Time your activities wisely: When possible, reschedule strenuous activities to early morning or evening.
• Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke.
• Dress for comfort: Wear lightweight and loose-fitting clothing to stay cool.

To ensure safety during outdoor work, adhere to the Occupational Safety and Health Administration (OSHA)'s recommendations by incorporating regular rest breaks in shaded or air-conditioned environments. If someone is affected by heat, immediately transfer them to a cool and shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published June 11, 2026 at 12:40 PM.