According to the UN Convention to Combat Desertification (UNCCD) drought causes more deaths and displaces more people than any other natural disaster. UNCCD also states that by 2050, worldwide population growth will result in a 50 percent increased demand for water.
Drought is often defined as an unusual period of drier than normal weather that leads to a water shortage. However, high temperatures and lack of precipitation are not the only causes of drought; overuse and misuse of water can also result in drought.
Droughts can occur in any climate zone and are a normal part of the climate cycle. They can be short or last several years.
Like other weather hazards, droughts may require extra vigilance or a change in normal behavior. For example, water usage such as watering lawns may be restricted. Similarly, camp or trash fires may be prohibited to prevent a wildfire.