|MadSci Network: Earth Sciences|
The eye of a hurricane is the center of the storm's circulation and as such there can only be one. The eye can disappear and reappear at the same location or shifted as the storm recenters itself, usually marking fluctuations in the strength of the storm. The eye also expands and contracts, sometimes with multiple eyewalls. These conditions are also related to fluctuations in storm intensity. The Louisiana Office of Emergency Operations has a good summary in Facts About the Eye of the Hurricane.
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