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New Study Reveals Magma Depths Beneath Cascade Volcanoes

10/10/2025

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Summary

Story summary

Earthquake waves reveal magma pockets beneath Cascade Range, 3–9 miles deep under Mount Rainier and Mount St. Helens, with no imminent eruptions.
Monitoring advances enable tracking magma changes, improving eruption forecasts.
Data gaps exist at Three Sisters and Mount Shasta due to coverage limitations, with researchers planning decades-long study of magma dynamics.
The study was published in Nature Geoscience.

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Story summary

Earthquake waves reveal magma pockets beneath Cascade Range, 3–9 miles deep under Mount Rainier and Mount St. Helens, with no imminent eruptions.
Monitoring advances enable tracking magma changes, improving eruption forecasts.
Data gaps exist at Three Sisters and Mount Shasta due to coverage limitations, with researchers planning decades-long study of magma dynamics.
The study was published in Nature Geoscience.