Triple-digit temperatures are forecasted for Oregon and Southwest Washington. Learn more here.

PORTLAND, Ore., KATU — Summer heat is expected to set in for Western Oregon and Southwest Washington with temperatures nearing 100 degrees by Sunday.

The National Weather Service of Portland is issuing an excessive heat watch starting Monday morning for “dangerously hot conditions” and a likely chance of temperatures between 94 and 105 degrees through Thursday.

KATU Meteorologist Dave Salesky said the high temperatures are coupled with an east wind through the Columbia River Gorge, making for critical fire danger.

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For the second day in a row, the Boulder Fire burning southeast of Mount Hood showed no growth as fire crews made major progress in containing the blaze.

The fire started July 8 near Boulder Lake Trailhead, about 9 miles southeast of Government Camp, bringing closures to a handful of nearby campgrounds. It remains listed at 234 acres.

A total of 385 fire personnel, aircraft and other heavy equipment have “been so effective at limiting fire growth that fire managers are beginning to transition to the mop-up phase of suppression operations,”…

A brush fire spotted Sunday morning in Washington state across the Columbia River from Hood River has burned more than 530 acres and prompted evacuations for everyone within a two-mile radius of the blaze.

Firefighters worked overnight to quell the Tunnel 5 fire, which spread rapidly due to hot, windy conditions and “extreme terrain,” the Southeast Washington Interagency Incident Management Team said Monday.

The fire is 0% contained, fire officials said.

No injuries have been…