DES MOINES, Iowa (AP) – The impending winter storm set to pound the Midwest has forced officials in Iowa to postpone the state high school bowling tournament.  The tournament was to be held in Des Moines on Thursday and Friday. But officials from the boys and girls high school associations say they were concerned that teams and spectators would have trouble leaving Des Moines. The associations said in a joint statement released Wednesday that the tournament will now be held on March 11-12 in Des Moines.