The NWS Portland OR issued an extreme heat warning at 4:51 a.m. on Monday in effect until Tuesday at 11 p.m. The warning is for Cowlitz County Lowlands, North Clark County Lowlands, Inner Vancouver Metro,

The National Weather Service has issued an Extreme Heat Watch for much of the Portland metro area and an Excessive Heat Warning for southwest Oregon, prompting the City of Beaverton to open an after-hours cooling center and the office of emergency management to recommend several ways to stay cool.