Scientists are warning the public that two volcanoes in the United States could erupt soon, including one in Alaska that has been showing increasing signs of unrest.  

The Alaska volcano, Mount Spurr located near Anchorage, has been giving off "significantly elevated volcanic gas emissions," based on recordings from recent overhead flights, the Alaska Volcano Observatory said Wednesday.

"We expect to see further increases in seismic activity, gas emissions and surface heating prior to an eruption, if one were to occur," the observatory said in a statement. "Such stronger unrest may provide days to weeks of additional warning."

The observatory said that an increase in seismic activity does not necessarily mean that an eruption will occur in the near future, but is a good indication, per CBS News. It also said that sometimes eruptions occur with no warning.

"While we expect additional changes to monitoring data prior to an eruption, it is also possible that an eruption could occur with little or no additional warning," the observatory wrote. "This would be extremely hazardous for recreators on Mount Spurr or near its drainages as well as those overflying the volcano."

The other volcano that scientists are monitoring with heightened interest is Washington state's largest volcano, Mount Adams, which was rocked by a series of small earthquakes late last year.

The 12,000 foot volcano is considered high risk because of its capability to trigger landslides, debris avalanches and mudslides, which could endanger people in South Central Washington, the Daily Mail reported Tuesday. 

Experts said the increase in seismic activity does not necessarily mean that the volcano is about to erupt. But monitoring stations around Mount Adams noted nine earthquakes ranging from magnitude 0.9 to 2.0 near the volcano between September and October of 2024. 

The volcano normally notes only one earthquake every two to three years, per the US Geological Survey (USGS).

The USGS said that the biggest threat to Americans is not the volcanic eruption but the avalanches and landslides that push rock, ash and ice down the volcano at any time. 

Experts said that the seismic activity has died down since October, but they are prepared for it to pick back up again.

Misty Severi is a news reporter for Just The News. You can follow her on X for more coverage.