we just received another update from the national hurricane center and hurricane dorian is a category four. that the a catastrophic hurricane. the concerns about that plus once in a year high tides are raising concerns about all of the low lying areas in and around miami which are already prone to flooding. c congresswoman donna served as the president of the university of miami and joins me now. congresswom congresswoman, thank you for being with us. the fact this could make landfall during a king tide, how concerned are you to the degree that could magnify the storm's impact? >> very concerned. already miami beach is flooding. we've already seen the initial effect of king tides which of course are the highest of the highest tides. so we're very concerned and we're preparing for the worst. >> how are you preparing?