Welcome to the CGRER Forecast Webpage for Volcano St. Helens 2004 Event

The eruption of Volcano St. Helens could occur in recent days, and this eruption could bring significant influence on regional air quality and climate. To track its possible influence, Center for Global & Regional Environmental Research at the Universioty of Iowa, is providing daily ash tracer forecasts for this event.

Interactive Forecast Viewer:

St. Helens Tracer Forecast

If you want to study current or previous scenarios instead of flight planning, previous forecasts may be more helpful. Please contact Gregory Carmichael, Youhua Tang for more information.