But the greatest concern from this storm is the dangerous surf and wave action that could cause significant beach erosion.
(the greatest concern from this storm; is; the dangerous surf and wave action that could cause significant beach erosion) (the dangerous surf and wave action; could cause; significant beach erosion)
the greatest concern from this storm the dangerous surf and wave action
is could cause
the dangerous surf and wave action that could cause significant beach erosion
significant beach erosion