Salt Lake City is heading into a dangerous weekend of triple-digit heat, with an Extreme Heat Warning beginning Friday afternoon. Patchy smoke arrives first, while limited storm chances return next week.

The tree-killing beetle has now spread to five Willamette Valley counties, including a first-ever detection inside a state park.

San Francisco should warm into the low 70s Thursday before a sunnier, hotter weekend arrives inland. Higher terrain faces elevated fire danger, while minor bayshore flooding may develop during evening high tides.