Cyclones: Sixty percent of the worldwide deaths caused by cyclones in the last 20 years occurred in Bangladesh. The cyclone that struck the coastal areas of Bangladesh in November 1970 caused over 300,000 deaths and US$ 2.5 billion worth of damage to property.
Floods: Floods and riverbank erosions affect some one million people annually in Bangladesh. Once every three to five years, up to two-thirds of Bangladesh is inundated by floods.
Droughts: Seasonal droughts in Bangladesh most commonly affect the northwestern region, as it receives lower rainfall than the rest of the country. These droughts have a devastating impact on crops thereby also affecting the food security of subsistence farmers.
Earthquakes: Bangladesh is located in a seismically active and high-risk region. The northern and eastern regions of the country are particularly susceptible to earthquakes.