1) try to delineate the risk zone based on EXPECTED tsunami height. This is actually quite difficult, as the shape of the underwater slope leading to the shore determines how the tsunami will form a wave, and the direction and scale of expected tsunamis are very difficult to predict. As has been SEEN, tsunami waves can refract leading to shorelines that do not face the source of the tsunami experiencing waves almost as large as those in a direct line. 

2) assess probability of inundation by ZONES, with those higher up the shoreline being less likely to be affected, and those directly on the beach being most likely to experience inundation 

3) educate the residents of those zones about the possibility of inundation and prepare evacuation plans that can realistically be completed with some warning 

4) consider changing physical obstacles to evacuation such as narrow roads, etc. 

5) establish an early warning SYSTEM and educate the public about its existence 

6) consider planning evacuation of marine vessels from harbors when there is enough notice to make this possible 

7) consider capacity of EMERGENCY service such as hospitals, ambulances, fire departments, and police and rescue services to handle the expected disaster 

8) plan for shelter and supplies for evacuees, considering that most utilities such as electricity (and gasoline since most gas stations depend on electricity) and water supplies will be interupted for days or even weeks. 

9) coordinate with areas that are not likely to be affected to obtain resources such as shelter, food supplies, hospital services, fire and police, etc. so that these services will be readily available when needed 

10) where building codes exist consider enhancing standards to improve survivability 

11) plan how incoming supplies from out of the area will not be obstructed or blocked by either outgoing traffic or possible destruction resulting from the tsunami