Three storms have been named Alison since 1986: three in the Southern Hemisphere (1986, 1991 and 1998). The strongest, in 1986, peaked as a Category 1 cyclone with winds of 85 mph (140 km/h).
Alison formed in the Southern Hemisphere in November 1998 and peaked as a Category 1 cyclone with maximum sustained winds of 80 mph (130 km/h) and a minimum pressure of 955 mb. It did not make landfall. The system was tracked for 7 days.
Cyclone Alison (1998): track and historyAlison formed in the Southern Hemisphere in January 1991 and peaked as a Category 1 cyclone with maximum sustained winds of 75 mph (120 km/h) and a minimum pressure of 1002 mb. It did not make landfall. The system was tracked for 11 days.
Cyclone Alison (1991): track and historyAlison formed in the Southern Hemisphere in April 1986 and peaked as a Category 1 cyclone with maximum sustained winds of 85 mph (140 km/h) and a minimum pressure of 974 mb. It did not make landfall. The system was tracked for 10 days.
Cyclone Alison (1986): track and historyThe most recent was Cyclone Alison in 1998, in the Southern Hemisphere. It formed on November 6, peaked at 80 mph (130 km/h) and lasted 7 days. It did not make landfall. Before that, the name was used in 1991 and 1986.
Cyclone Alison in 1986 was the strongest, peaking as a Category 1 cyclone with winds of 85 mph (140 km/h) and a minimum pressure of 974 mb. It formed in the Southern Hemisphere in April. The weakest of the three, in 1991, peaked at 75 mph (120 km/h).