They only do that in years where there are more hurricanes than alphabetic names assigned. It is an arbitrary convention.
When the predetermined list of names for hurricanes is exhausted, the Greek alphabet is used. For example, if the Atlantic hurricane season runs out of the designated names, it will use Greek letters like Alpha, Beta, Gamma, etc., as storm names.
When all the letters in the alphabet are used for naming hurricanes in a single season, meteorologists use the Greek alphabet to assign names. This practice was adopted in 2005, allowing for additional names like Alpha, Beta, and Gamma to be used. However, the use of Greek letters has been discontinued in favor of a new naming convention, which involves the creation of supplemental lists for future seasons. These supplemental lists will include additional names that can be used if the standard list is exhausted.
After all available letters have been used, any more storms in the season are named with letters of the Greek alphabet.
If the alphabetical list of names for storms is used up, the World Meteorological Organization (WMO) moves to the Greek alphabet. After exhausting the list of traditional names for a given hurricane season, they would switch to using the Greek alphabet to name subsequent storms in that season.
After all available letters have been used, any more storms in the season are named with letters of the Greek alphabet.
When the predetermined list of names for hurricanes is exhausted, the Greek alphabet is used. For example, if the Atlantic hurricane season runs out of the designated names, it will use Greek letters like Alpha, Beta, Gamma, etc., as storm names.
When all the letters in the alphabet are used for naming hurricanes in a single season, meteorologists use the Greek alphabet to assign names. This practice was adopted in 2005, allowing for additional names like Alpha, Beta, and Gamma to be used. However, the use of Greek letters has been discontinued in favor of a new naming convention, which involves the creation of supplemental lists for future seasons. These supplemental lists will include additional names that can be used if the standard list is exhausted.
Once all the letters have been used in a season, scientists turn to the Greek alphabet to name additional hurricanes. They start with Alpha and move through the Greek alphabet, using a new name for each subsequent storm. These names are only used for storms that occur in the Atlantic Basin.
After all available letters have been used, any more storms in the season are named with letters of the Greek alphabet.
The Phoenician alphabet was the inspiration for the Greek alphabet.
The Greek alphabet was based on the Phoenician alphabet.
The Cyrillic alphabet is derived from the Greek alphabet, with the addition of several characters from the Hebrew alphabet.
The Greek alphabet, an evolution of the Phoenician. An evolution of the Greek alphabet was the Latin.
The letter after 'psi' in the Greek Alphabet is 'Omega'.
Americans use the Latin Alphabet, which was directly influenced and based on the Greek Alphabet.
You don't. The Greek alphabet is quite different from the Latin alphabet (which is used for English).
The Phoenician Alphabet