Disaster prevention First I searched for an actual plan of my city, with topographical information of ground elevation. I stablished the correspondence between the topographic elevation and the sea levels, considering the tides. I found that the maximum sea level, only considering astronomical tide is 1.7 m above zero elevation. The next step was to draw a city plan with the areas under the maximum sea level and steps of 5 metres in elevation, e.g. 6.7, 11.7 and 16.7 m. Those could be the potential risk areas. Fortunately my house is not in this risk areas but the tsunami could appear when visiting downtown, where there are various streets in risk areas. There are not historical evidences of large tsunamis in my region, but in my country, a tsunami took place 250 years ago 1000 km away from my town. A recent guideline published by the government assets that there is a potential risk of a tsunami with a sea elevation of two metres maximum. The time of arrival would be in one hour and fifteen minutes and the maximum high would reach the coast in one hour and fifty two minutes. Due to the lack of recent seismic activity, they hardly could make a statistical analysis of the phenomenon and they estimated the maximum possible surface displacement without reference to a return period. After this I stablished that a 5.7 m elevation could be a good election for the determination of risk areas. This high could be reached for the water if considering astronomical and barometrical tide, inundation height, maximum run-up and wind waves, which are large in my region (up to twelve metres of significant wave high in a recent storm). Firstly, it would be easy to plan evacuation routes to the higher parts of the city, classified as Category A evacuation points. Secondly, as in this risk areas is plenty of tall buildings with concrete structure, the best election is to select them as category B evacuation facilities. Finally a good campaign of information and an alert protocol would be necessaries for achieving the target.