1 The Philippine Institute of Seismology has set a level three alert, ranking the situation as critical, with an eruption possible within weeks.
2 After the great eruption, fear of Mount Etna was great; people did not return to cultivate its rich hillside lands until the volcano had been quiescent for a full two years.
3 The place was recently visited by a serious volcanic eruption.
4 The bar erupted into gales of laughter.
5 Violence erupted after police shot a student during the demonstration.
6 A bidding war for the textile firm erupted.
7 In Los Angeles, the neighborhood known as Watts erupted into riots.
8 Inner-city riots erupted when a local man was shot by police.
9 It's many years since Mount Vesuvius last erupted.
10 When marchers gathered on a third day of protest, violence erupted and buildings were burned.
11 Authorities believe they have now recovered the bodies of all the workers who perished in the Soma mine when the fire erupted Tuesday.
12 The crowds that amassed outside Sonia Gandhi's home in Delhi prepared to erupt into cheers of 'bring back Sonia Gandhi'.
13 After meeting Thailand's foreign minister, Cambodia's prime minister, said armed clashes would erupt if Thai troops continued to trespass over the border.
14 A regional conflict would erupt into violent warfare.
15 A huge plume is rising from Mount St. Helens, but it's not immediately clear if the volcano is erupting.