After it was brought to my attention that Mt. St. Helens was falsely showing on my volcano display, even though it wasn't active for a couple of months, I had to change the data source, away from the Smithsonian Institution.
My data now are from the International Volcano Research Centre, at Apache Junction, Arizona. I thank R. B. Trombley,Ph.D. and his associates for permission to use the data.
![Volcano icons](http://satellite.ehabich.info/images/explain/volcanosample.png)
Scale of volcanic acitivities:
![Volcano Alert Level 1](http://satellite.ehabich.info/images/explain/volcanoyello.png)
(Volcano Alert Level 1)
![Volcano Alert Level 2-4](http://satellite.ehabich.info/images/explain/volcano.png)
(Volcano Alert Level 2-4)
![Volcano Alert Level 5](http://satellite.ehabich.info/images/explain/eruption.png)
Data from: http://www.intlvrc.org/alerts.htm
Update interval: twice daily.