Key Point Summary โ Volcano Threatens Alaska
- Mount Spurr shows over 100 earthquakes a week
- Experts warn explosive eruption is still possible
- Ash cloud could blanket Anchorage, grounding planes
- Gas levels suggest magma may be near the surface
- Past eruptions caused wide ash fallout and chaos
Tremors Shake Mount Spurr Once Again
Alaskaโs 11,000-foot Mount Spurr is back in the spotlight as tremors rattle the region. Over the past two weeks, more than 100 earthquakes per week have rocked the volcanoโs base, echoing quake activity from earlier this spring.
The Alaska Volcano Observatory (AVO) sounded the alarm in a report dated May 28, warning that Spurr remains in an โelevated state of unrest.โ While the chances of an eruption have dipped slightly, seismologists stress the threat is far from gone.
โWeโre not out of the woods yet,โ said Matt Haney of the AVO. โEarthquakes are still happening at Mount Spurr.โ
Eruption Could Mirror 1992 Disaster
Spurr last exploded in 1992, coating Anchorage in ash and shutting down its airport. If it blows again, the eruption could mirror that event, with ash clouds shooting 50,000 feet into the sky and drifting hundreds of miles.
This time, officials are watching the volcanoโs side vent, Crater Peak. Thatโs the same vent responsible for Spurrโs last major outbursts in 1953 and 1992.
AVO warned that a sudden eruption could unleash mudslides and avalanches of molten debris racing down the mountain at speeds up to 200 mph.
Mixed Signals From Below
A May 23 gas check detected CO2 emissions still โabove backgroundโ levels โ a possible sign of magma. Yet emissions havenโt significantly changed since Aprilโs readings, leaving scientists puzzled.
Though some signs have eased, like a pause in the mountainโs deformation, seismic and gas data remain โinconclusive.โ
โThe system doesnโt look like itโs actively pressurizing,โ the AVO noted, โbut magma could still be lurking just below the surface.โ
No Immediate Danger To Communities
While an eruption could trigger widespread ash fallout, officials say there are no towns close enough to be buried by debris flows. However, Anchorage โ Alaskaโs largest city โ remains vulnerable to volcanic ash, which could choke airspace and disrupt travel.
Despite the uncertainty, experts say there would likely be early warning signs if Spurr begins to erupt. But until then, the region remains on high alert.