scrambling to try to fix the problem as we mentioned earlier new york is in the middle of a tornado warning and we don't get those every day. rick leventhal is live on the scene. hi, rick. >> reporter: martha, we're right in the middle of west 57th. this is a major east/west crosstown thoroughfare and it's shut down between sixth and seventh avenues and you can see why that yellow box dangling about 20 stories above the street. we're told that's a concrete square, seven tons of concrete that may in fact be a counterweight to the crane that's holding it. there is the crane that malfunctioned earlier this morning at the top of the building. the apartments in this luxury condominium being built where the crane is, $90 million for a penthouse apartment in that building. the crane malfunctioned at some point this morning, they stopped the counterweight from it being