( ( Low ( pressure areas ) ) ( ( called ( ( low ( pressure cells ) ) ( are ( associated ( with ( ( ( unsettled or ) stormy ) weather ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Low) (NN pressure) (NNS areas)) (VP (VBD called) (SBAR (S (NP (JJ low) (NN pressure) (NNS cells)) (VP (VBP are) (VP (VBN associated) (PP (IN with) (NP (ADJP (JJ unsettled) (CC or) (JJ stormy)) (NN weather)))))))) (. .)))
Low pressure areas called low pressure cells are associated with unsettled or stormy weather.
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB expect) (ADJP (JJ stormy)) (SBAR (IN if) (S (NP (NP (DT a) (NN center)) (PP (IN of) (NP (JJ low) (NN pressure)))) (VP (VBZ is) (VP (VBG moving) (NP (PRP$ your) (NN way)))))))) (. .)))
You can expect stormy if a center of low pressure is moving your way.