The World Meteorological Organization (WMO) is the international body responsible for naming tropical storms. The WMO has six regional tropical cyclone bodies that are responsible for naming storms in their respective regions. These bodies are:

* The WMO Regional Association for North and Central America and the Caribbean (RA IV)

* The WMO Regional Association for South America (RA III)

* The WMO Regional Association for the Southwest Pacific (RA V)

* The WMO Regional Association for the Southeast Pacific (RA VI)

* The WMO Regional Association for Asia (RA II)

* The WMO Regional Association for Africa (RA I)

How are storms named?

Each regional tropical cyclone body has its own list of storm names. These lists are typically composed of names that are common in the region or that have a special meaning. For example, the RA IV list includes names such as "Alex", "Bonnie", and "Charlie", while the RA II list includes names such as "Haiyan", "Jebi", and "Mangkhut".

When a tropical storm reaches tropical storm strength, the regional tropical cyclone body will issue a name for the storm. The name is typically chosen from the list of pre-determined names for the region. If the list is exhausted, additional names will be chosen from a supplemental list.

Why are storms named?

Naming storms helps to identify them and to track their movements. This is important for public safety, as it allows people to be aware of the potential dangers posed by a storm. Naming storms also helps to raise awareness of the risks of tropical cyclones and to encourage people to take precautions.

When are storms named?

A tropical storm is named when it reaches tropical storm strength. This means that the storm has sustained winds of at least 39 miles per hour (63 kilometers per hour).