(S (S (BASENP (DT The) (NNP National) (NNP Weather) (NNP Service)) (VP (VBZ has) (VP (VBN posted) (NP (BASENP (JJ Excessive) (NN Heat) (NNS Warnings)) (PP (IN for) (NP (NP (BASENP (JJ many)) (PP (IN of) (NP (BASENP (DT the) (NNS cities)) (PP (IN in) (BASENP (DT the) (JJ eastern) (NN seaboard)))))) (SBAR (WHNP (WDT that)) (S (VP (VP (VBP do) (RB not)) (VP (ADVP (RB normally)) (VP (VB experience) (NP (BASENP (DT this) (NN type)) (PP (IN of) (BASENP (ADJP (RB dangerously) (JJ hot)) (NN weather))))))))))))))) (PERIOD .))