( ( ( ( ( Hurricanes ( ( ( have ( high winds ) ) , ) too ) ) , ) but ) ( ( ( the radius ) ( of rotation ) ) ( ( ( is greater ) , ) ( so ( ( their ( relative vorticity ) ) ( ( is ( less than ) ) ( for tornadoes ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNPS Hurricanes)) (VP (VBP have) (NP (JJ high) (NNS winds)) (, ,) (ADVP (RB too)))) (, ,) (CC but) (S (NP (NP (DT the) (NNS radius)) (PP (IN of) (NP (NN rotation)))) (VP (VBZ is) (ADJP (JJR greater)) (, ,) (SBAR (IN so) (S (NP (PRP$ their) (JJ relative) (NN vorticity)) (VP (VBZ is) (ADVP (RBR less) (IN than)) (PP (IN for) (NP (NNS tornadoes)))))))) (. .)))
Hurricanes have high winds, too, but the radius of rotation is greater, so their relative vorticity is less than for tornadoes.
(ROOT (S (NP (DT Both) (NNS hurricanes) (CC and) (NNS tornadoes)) (ADVP (RB always)) (VP (VBP have) (NP (JJ high) (NNS winds))) (. .)))