, our guestsjoining me tonight are the political commentator and journalist, daisy mcandrew and tim stanley. in america, more than a thousand people have been rescued from rising floodwaters in houston in texas. the heavy rain has been described as "catastrophic" and a major emergency has been declared, with hundreds still stranded. 0ur correspondentjames cook is in houston. thanks very much. across this city right now, an unprecedented crisis is unfolding. hundreds of rescues are taking place at this very moment. we havejust heard are taking place at this very moment. we have just heard this weather event is on a scale never before recorded in history, with the possibility of rainfall reaching up to 50 inches, the most ever seen in this state. harvey arrived in houston with a vengeance, no longer packing the full force of a hurricane, but still deadly. in 2a hours, more than two feet of rain fell on the fourth largest city in the united states. the results are devastating. it appears to be one of the worst floods houston is ever had. we are measuring it not in inches, but in feet. houston