In early spring, several forecast groups or organizations issue forecasts about activity in forthcoming Atlantic hurricane season. This year many of them hinted at a "slightly above" to "above" average season. June 1st is the official start of the Atlantic hurricane season though Subtropical storm Alberto gave us a May preview. Some of the early season forecasters have adjusted their forecasts to expectations for a "normal" season. What is the science behind why the experts changed their minds about the 2018 season?
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