The phenomenon of heavy rainfall and flooding

Continuous heavy rainfall for several days over the same catchment location. Hourly rainfall exceeds all-time records.

River water levels rise to overflow the embankment and water then enters roads and houses.

In severe cases, roads become rivers and vehicles float and are washed away with the water.

Residential areas lose power and drinking water, traffic is paralyzed and the ground saturated.


The mechanisms of heavy rainfall and flooding

Heavy rainfall is due to typhoons or low-pressure weather patterns and comes from rain clouds producing heavy falls over the same place for a long period of time, usually occurring during the rainy season (June to July).

Flooding is a phenomenon in which the volume of water in a river increases significantly due to heavy rainfall, causing the river to overflow its banks.


Measures for a tsunami

When you feel the ground shake, please leave the beach area and quickly move to a higher place.

Even if you do not feel any shaking or earthquake, a tsunami may occur. Please turn on your radio, TV or cell phone to receive news and follow the latest warnings and  leave for a safe place in time.

If you receive a tsunami warning, avoid swimming, fishing, or playing at the beach.

The tsunami will come again and again, and the latter wave may be higher and larger than the first wave. Please do not return to your original location, but follow the disaster prevention information to confirm safety before returning.