During the week observer reported 4 events of pyroclastic flows travelled 2 km to Sat river and 2.75 km of lava avalanches.
(the week observer; reported; 4 events of pyroclastic flows; T:During) (pyroclastic flows; travelled; to Sat river and 2.75 km of lava avalanches)
the week observer pyroclastic flows
reported travelled
4 events of pyroclastic flows T:During
to Sat river and 2.75 km of lava avalanches