think she may be at cat 3 tonight, but i wouldn't expect her to make cat 4 until she hits the Loop Current full on.... yes its a little cooler, but i think that once she passes and goes through an ERC tomorrow, i think Cat 5 is not out of the question on thurs.... Katrina went through an ERC during the night as she moved over the loop current and that next morning she blew up..... i am tending to go with a cat 3 - 4 at landfall.... just sw of Houston. I think storm surge will be another BIG problem with this system, along the texas coast.