Related by context. Frequent words. (Click for all words.) 57 volcano erupts 57 volcanic eruption 56 volcano 55 volcano eruption 55 eruption 52 volcanoes 52 Eyjafjallajökull 52 volcanic activity 51 volcanic eruptions 49 Eruptions 49 Eyjafjallajokull 49 eruptions 48 active volcanoes 48 volcanologists 47 Eyjafjallajokull volcano 47 Eruption 47 active volcanos 47 Grimsvotn volcano 47 meteor shower 47 pyroclastic flows 47 vulcanologist 47 aurora 47 plume 47 volcanic 46 erupting volcano 46 spewing ash 46 Volcanology 46 geologically active 46 meteor showers 46 smoke plumes 45 volcano erupted 45 ash plume 45 ash clouds 45 Perseid meteor shower 45 lava 45 volcanic ash 44 geomagnetic storm 44 volcanos 44 volcanologist 44 Mount Sinabung 44 meteor 44 seismic activity 44 earth tremors 44 auroras 44 lava flows 43 crater 43 Seismology 43 sonic boom 43 Kilauea volcano 43 Mount Redoubt 43 Grimsvotn 43 Mount Pinatubo 43 Mayon Volcano 43 dormant volcano 43 fireball 42 gamma ray burst 42 erupting 42 Aurora Borealis 42 Tsunami warnings 42 Alaska Volcano Observatory 42 vog 42 lightning flashes 42 volcanic gases 42 ash cloud 42 aurora borealis 41 mushroom cloud 41 waterspout 41 Seismologists 41 Tungurahua 41 meteors 41 Indonesia Mount Merapi 41 Pinatubo 41 lava flow 41 Seismology Phivolcs 41 Mount Merapi volcano 41 volcano crater 41 molten lava 41 Eta Carinae 40 volcanism 40 unaided eye 40 Katla 40 contrail 40 volcanic earthquakes 40 Iceland volcano 40 crater rim 40 solar flares 40 Bulusan 40 Earth Observatory 40 seismologists 40 tsunamis 40 Krakatoa 40 meteorite 40 X ray emission 40 astronomers 40 infrared telescope 40 Merapi 40 plumes 40 Eyjafjallajokull glacier 39 seismology 39 waterspouts 39 supernova explosion