A heat advisory remains in effect from 11 a.m. Sunday through 11 p.m. Tuesday for much of northwest Oregon and southwest Washington, including the Central and Southern Willamette Valley.
The National Weather Service says temperatures are expected to reach 92 to 98 degrees. The advisory also includes the northern and central Oregon Coast Range valleys and mountains, the Cascade foothills, the Hood River Valley, the Central Columbia River Gorge, the Lower Columbia and Cowlitz River valleys, outer southeast Portland metro, parts of Clark County and the south Washington Cascade foothills.
Forecasters say the hottest days are expected to be Sunday and Monday, with only a slight cool down on Tuesday. Overnight temperatures are also expected to stay warm, with lows generally in the 60 to 65 degree range. In parts of the western Central and Southern Willamette Valley, there is a chance overnight temperatures could stay above 70 degrees Sunday night into Monday, limiting relief from the heat.
Health officials say hot temperatures can increase the risk of heat-related illness, especially for older adults, young children, people without air conditioning, outdoor workers and those with health conditions.
Residents are urged to drink plenty of fluids, stay in cool places during the hottest part of the day, avoid direct sunshine when possible, and check on relatives and neighbors. People without air conditioning are advised to keep air moving with fans, keep windows closed during the day, and open them at night unless air quality is poor because of wildfire smoke.
Anyone working or spending time outside should wear lightweight, loose-fitting clothing and limit strenuous activity to the early morning or evening. Workers should take frequent rest breaks in shaded or air-conditioned areas.
Officials say heat stroke is a medical emergency. Anyone overcome by heat should be moved to a cool, shaded location, and 9-1-1 should be called if heat stroke is suspected.
People who need help finding a cooling shelter or other heat-related assistance can call 2-1-1 during business hours, visit 211info.org in Oregon, or wa211.org in Washington.
Officials also remind drivers never to leave children or pets inside unattended vehicles. Car interiors can reach deadly temperatures within minutes.
