Instructivo hacerca de un desastre natural con first, then, after, after that y finally con el texto en inglés por favor?

In case of tsunami :

First get out of the water and move away from the immediate water's edge of harbours, coastal estuaries, rock platforms, and beaches.

Boats

in harbours, estuaries and in shallow coastal water should return to

shore -

Then secure your boat and move away from the waterfront.

Vessels already at sea should stay offshore in deep water until further advised.

After that do

not go to the coast to watch the tsunami, as there is the possibility

of dangerous, localised land inundation of the immediate foreshore.

Finaly check that your neighbours are aware of the situation.