1 of 1
Story summary
- On September 16, 2025, a plume over Mount St. Helens raised eruption concerns.
- The US Geological Survey (USGS) confirmed it was resuspended ash from the 1980 eruption, not an eruption.
- Strong easterly winds lifted ash thousands of feet into the air.
- The volcano's alert level and aviation color code remain green, indicating normal activity.
- Visibility and air quality may be affected, but no significant hazards are present.
