Abstract: Airburst – In the simulations explored energy from the airburst couples very weakly with the water making tsunami dangerous over a shorter distance than the blast for asteroid sizes up to the maximum expected size that will still airburst (approx.250MT). Future areas of investigation: – Low entry angle airbursts create more cylindrical blasts and might couple more efficiently – Bursts very close to the ground will increase coupling – Inclusion of thermosphere (>80km altitude) may show some pl…