NATIONAL BRIEFING / ALASKA

Mt. Redoubt has simmered down after spreading a layer of volcanic ash over several communities, including Anchorage.

The volcano was emitting low-level tremors but hadn’t erupted, monitors at the Alaska Volcano Observatory said.

A plume rose 25,000 feet above sea level, but scientists said it appeared to be only vapor, and they were not adding it to Redoubt’s 18 eruptions during the last week.