text:  Texas' governor has issued severe weather disaster declarations for 40 counties in advance of Barrel's arrival, and residents in multiple counties are being asked to evacuate. For NPR News, I'm Emily Green. Weather officials say as many as 130 million Americans are being threatened by the continuing heat wave that's already broken many records. The heat is also expected to shatter more records over the next week, both in the Pacific Northwest and along the nation's east coast.