(S (S (BASENP (NN Snow)) (VP (VBD started) (S (VP (TO to) (VP (VP (VP (VB fall) (PP (IN at) (NP (BASENP (RB around) (NN 12:00) (NN pm)) (BASENP (NN EST))))) (PP (IN on) (NP (BASENP (NNP Thursday)) (COMMA ,) (BASENP (NNP October) (NN 12))))) (COMMA ,) (S (UCP (ADJP (JJ heavy) (PP (IN at) (BASENP (NNS times)))) (CONJP (COMMA ,) (CC and)) (VP (VBN accompanied) (PP (IN by) (BASENP (NN thunder) (CC and) (NN lightning))))))))))) (PERIOD .))