During a Tsunami Follow official guidance but do not wait for an official warning before evacuating as authorities may not have enough time to issue a Tsunami Warning. If you are at the beach and recognize signs of a tsunami - such as a severe ground shaking, the sea pulling back significantly from the shoreline or an unusual roar from the ocean - leave the area and move immediately to higher ground. Sometimes, tsunamis may occur without the initial pulling back of the sea. In this case, a massive wall of water may be seen approaching land. If you can see the wave, you are already too close to outrun it. If you are unable to move to higher ground, go to an upper floor (at least the 3rd storey) or roof of a concrete and reinforced building. As a last resort, climb a strong tree if trapped on low ground. If swept up by a tsunami, look for something to use as a raft. A tsunami is not a single wave but a series of waves that can come ashore for hours. The first wave may not be the largest. If a Tsunami Warning is issued, NEVER go down to the beach to watch the waves come in. Do not try to surf the tsunami. Stay out of danger areas until an “ALL-CLEAR” is issued by a recognized authority e.g. your local disaster management office. A tsunami can last for hours.