All articles tagged with #ground shaking
A new seismic analysis shows the Juan de Fuca slab beneath northern Oregon sits about 5 km closer to the surface than previously thought, potentially boosting peak ground shaking from a future Cascadia megathrust quake by roughly 9–17% along the coast, and a deep Tillamook sediment basin could further amplify motion by trapping seismic waves.
Experts warn the Hayward Fault near the Bay Area is overdue for a major quake; recent 3.8 temblor near Oakland and aftershocks highlight its volatility, while simulations show a magnitude-7 rupture could produce significantly stronger shaking across the region. USGS estimates a 14.3% chance of a 6.7+ quake by 2034 and about 33% before 2043. A major rupture could bring hundreds of fires, tens of thousands of destroyed homes, and hundreds of thousands displaced, though no major damage was reported in Thursday’s quake.