Scenarios provide guidance for emergency managers. The Seattle fault scenario showed areas of inundation in Puget Sound with strong currents around Harbor Island. Source parameters for crustal fault earthquakes are poorly known. Landslide-generated tsunamis often have wave heights offshore that are comparable to runup heights. Tsunamis will have effects not currently expected, such as the amount of strain on the pontoon cables for floating bridges in Lake Washington.
Tidal conditions are important for modeling inundation.
Seismologists and tsunami modelers need to hone fault parameters for more realistic models of the Seattle fault. Landslide-generated tsunamis are over quickly and affect limited area no warnings are possible.