Tokyo Metropolitan Storm Surge
Training Site

This introduces you to how to find out how dangerous your location is in the event of a storm surge disaster.
Tokyo Metropolitan Government has been announcing the depth of flooding and the duration of flooding in the event of the largest storm surge flooding damage since 2018.
◆Tokyo Metropolitan Assumed Storm Surge Flooding Area Map

The city of Tokyo is in the innermost part of Tokyo Bay, making it topographically susceptible to storm surges.
Even if the tide level has dropped, it can rise again. Never approach the sea or an estuary until your municipality has lifted its evacuation advisory or evacuation order.
Learn more about storm surges here (terms relating to storm surges).

Preparing to Evacuate

Be Sure to Gather Information!

Check the hazard map for your evacuation shelter!
※Choose an evacuation shelter for storm surges and tsunamis.

Pay attention to evacuation information from each ward!

Check your belongings when evacuating

Precautions When Evacuating

Evacuate before the storm intensifies (immediately evacuate to a safe place when a storm warning has been issued.)

If you live on or below the second floor of a building, evacuate to a storm surge or tsunami evacuation shelter designated by the ward, or evacuate to outside the area where flooding is expected.

In principle, use public transport when evacuating.
Public transport may stop before a typhoon approaches, so move to a safe place while public transport is still operating.
※In principle, evacuation by private car is prohibited because it can cause traffic congestion in the ward allowing automobiles to washed away during a flood.

When a Storm or Rain Becomes Intense

In principle, evacuating using an umbrella is prohibited because umbrellas can break and cause injuries. When evacuating, wear a raincoat, when possible.

Never approach roads that are overflowing with water
If roads are overflowing with water and you are unable to move to an evacuation shelter, evacuate to a nearby building that is at least three stories high.

Nighttime evacuation is dangerous. Always evacuate during the day.

When You Are Late to Evacuate

If you are late to evacuate, evacuate to a sturdy building (a public facility, or an apartment building or the like) that is at least three stories high near your home.

If leaving your home is dangerous, evacuate to the second floor of your home or higher if possible.

• Even if the weather improves, a second wave of the storm surge is still possible. Never approach the sea or an estuary until your municipality has lifted its evacuation advisory or evacuation order.
• There are areas where flooding can continue for a week or longer. Essentials (electricity, gas, water, communications) cannot be used for a long period of time in those areas, making daily life difficult
  Ensure you have an adequate amount of contingency retention stock during normal times.

• In order to stay safe in the case of a storm surge, it is important that you first get correct information, then evacuate to a safe place before any danger approaches.
  Check information issued by a trusted agency (such as from your ward, the Tokyo Metropolitan Government, national disaster prevention agency, or the media or the like) through information gathering, television, radio, or by using your smartphone.
  In recent years, smartphones have increasingly been used to collect information. Make a habit of keeping a portable battery on you so that you can use your mobile smartphone for the longest amount of time possible.
  Information from social media is also useful. However, in such cases, follow information from a trusted agency such as the ward where you live, or disaster prevention related information from the Tokyo Meteorological Agency, and the Japanese government (Japan Meteorological Agency, or Ministry of Land, Infrastructure, Transport and Tourism or the like).

Links to Storm Surge Prevention Comprehensive Information System

Link to Tokyo Water Disaster Prevention Comprehensive Information System (Waterway Information)