Flood

Region/Country	Description
US	A rapid and extreme flow of high water into a normally dry area, or a rapid water level rise in a stream or creek above a predetermined flood level, beginning within six hours of the causative event (e.g., intense rainfall, dam failure, ice jam). However, the actual time threshold may vary in different parts of the country. Ongoing flooding can intensify to flash flooding in cases where intense rainfall results in a rapid surge of rising flood waters. Any high flow, overflow, or inundation by water which causes or threatens damage. Flooding which occurs when water is driven onto land from an adjacent body of water. This generally occurs when there are significant storms, such as tropical and extratropical cyclones. Lakeshore Flooding is the inundation of land areas adjacent to one of the Great Lakes caused by lake water exceeding normal levels. Lakeshore flooding impacts the immediate lakefront, bays, and the interfaces of lakes and connecting waterways, such as rivers.
JP	The storm surge special warning is announced when it is expected to become a storm surge due to a strong typhoon or similar temperate low pressure in several decades. Issued when serious disasters are expected to occur due to high water caused by heavy rain, prolonged rain, or snow-melting.
CA	A Storm Surge Warning is issued when a storm surge and/or high waves may result in significant flooding in coastal areas. A storm surge is a high and forceful dome of wind-driven ocean water that sweeps along the coastline near where the eye of a tropical or non-tropical storm makes landfall or passes close to the coast. Most hurricane-related deaths are from storm surge flooding. Storm surge flooding can occur over hundreds of kilometres of coastline and may extend inland several miles. High Water Level Warning is issued when a storm surge and/or high waves accompanied by rough pounding surf may result in significant flooding or damage to infrastructure along coastal areas. The severity of impact is influenced by the combination of wind, tides and the nature of the coastline. Rainfall of 25 mm or more within 1 hour or less.
DE	Mit Dauerregen bei einer vorhandenen Schneedecke ( > 15 cm ).