Mt. Fitzherbert

PORTLAND — Seventeen new sensors will be placed around the moving and shaking Mount St. Helens in the next few weeks, in hopes of giving scientists a better picture about what's going on under the surface — and perhaps, better enable them to forecast eruptions.

The sensors will be linked to a national network that detects the most subtle movement in the earth's crust.

The mountain began signaling its current nonstop eruption with hundreds of earthquakes two years ago Saturday.