Complex sentence: Although Haima kept deteriorating gradually over decreasing ocean heat content, the system soon regained a ragged 150 km (90 mi)-wide eye under increasing vertical wind shear slightly offset by good dual outflow channels.
Split into simpler sentences: Although Haima kept deteriorating gradually over decreasing ocean heat content, the system soon regained a ragged 150 km (90 mi)-wide eye. Environmental conditions at this time included increasing vertical wind shear slightly offset by good dual outflow channels.