Japan has issued tsunami warnings and advisories for northeastern coastal areas, including Iwate, Aomori, and Hokkaido, following a magnitude 7.5 earthquake that struck off the coast of Sanriku around 16:53 JST today. Tsunami #EarlyWarnings are vital to ensure the safety of lives and properties in the case of a Tsunami event. In many countries, the National Meteorological and Hydrological Services provide the essential data and products to detect Tsunami.