Heat advisory for Southwest Washington from Sunday to Tuesday, says the NWS

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The NWS Portland OR released a heat advisory at 9:13 p.m. on Thursday valid from Sunday 11 a.m. until Tuesday 11 p.m. The advisory is for Willapa and Wahkiakum Lowlands, Willapa Hills, Cowlitz County Lowlands, North Clark County Lowlands, South Washington Cascade Foothills and Central Columbia River Gorge - SR 14.

"Temperatures between 92 and 98 degrees F expected," adds the NWS. "Peak heating days will be Sunday and Monday with a slight cool down on Tuesday. Overnight temperatures will remain elevated Sunday night into Monday morning, and Monday night into Tuesday morning. Night time temperatures ranging from 60 to 65 degrees F will lead to limited overnight relief."

"Hot temperatures may cause heat illnesses," says the NWS.

This advisory is in effect until Tuesday at 11 p.m.

NWS Heat Wave Safety Advice: Protect yourself with these recommendations

• Stay hydrated: Keep yourself well-hydrated by drinking plenty of fluids.
• Find cool shelter: Stay in an air-conditioned room.
• Look out for others: Stay out of the sun, and check up on relatives and neighbors.
• Child and pet safety: Never leave young children and pets unattended in hot vehicles - car interiors can reach lethal temperatures in a matter of minutes.
• Exercise caution outdoors: If you work or spend time outside, take additional safety measures.
• Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible.
• Recognize warning signs: Know the signs and symptoms of heat exhaustion and heat stroke.
• Stay cool with clothing: Wear lightweight and loose-fitting clothing.

To minimize risks during outdoor work, the Occupational Safety and Health Administration (OSHA) advises incorporating frequent rest breaks in shaded or air-conditioned areas. If someone experiences heat-related symptoms, promptly relocate them to a cool and shaded spot. In case of an emergency, dial 911.

Source: The National Weather Service

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This story was originally published June 11, 2026 at 9:16 PM.