a thunderstorm attracts magnetic erosion / ferromagnetic microscope through branches
geomagnetic_storms is natural_hazard. magnetic_fields is band. magnetosphere is magnetic_field. magnetic_storm is not perturbation. ferromagnetism is magnetism. storm_cellar is shelter. tornados has funnel_clouds magnetosphere is not magnetic_field. magnetic_storm is perturbation. geomagnetic_storms is not natural_hazard.