Northwest heat wave, bad air pose danger

PORTLAND, ORE. — Temperatures were expected to soar to triple digits again Friday in Portland, Oregon, and Seattle as a heat wave bakes the Pacific Northwest, and forecasters said hot weather and wildfire smoke would pose a problem through the weekend.

An air quality alert was issued through Saturday night for much of northwestern Washington because of smoke drifting in from blazes in the eastern part of the state and British Columbia. However, forecasters said the hazy sky could drop temperatures slightly lower than predicted Friday and Saturday.

Temperatures in Portland reached 103 F on Thursday — 20 degrees above average. In Bellingham, Washington, the high hit 100 F for the first time on record, while Seattle topped out in the 90s.

It’s the second major heat wave in less than a month in a normally temperate region where many don’t have air conditioning. Record-breaking hot weather in late June caused hundreds of deaths in Washington state, Oregon and British Columbia when the thermometer went as high as 116 F.

A detailed scientific analysis found the June heat was virtually impossible without human-caused climate change. Meteorologist Jeff Masters with Yale Climate Connections said a similar study would need to be done with other heat waves, but there’s a general link between global warming and worsening heat waves.

“If you increase your baseline temperature, you greatly increase your odds of extreme heat events,” said Masters, co-founder of the private Weather Underground company.

Much of the Northwest was under an excessive heat warning through today.

The National Weather Service said heat advisories and warnings were also in effect from the Midwest to the Northeast and mid-atlantic through at least Friday.

Oregon Gov. Kate Brown has declared a state of emergency and activated an emergency operations center. City and county governments have opened cooling centers, extended public library hours and waived bus fare for those headed to cooling centers. A 24-hour statewide help line will direct callers to the nearest cooling shelter and offer safety tips.

Authorities scrambled to provide relief to the vulnerable, including low-income older people and those living outdoors. Oregon volunteers handed out water, portable fans, popsicles and information about cooling shelters to homeless people living in encampments along the Columbia River on the outskirts of Portland.