HURRICANE KATRINA FORECAST/ADVISORY NUMBER 25
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL122005
0300Z MON AUG 29 2005
ESTIMATED MINIMUM CENTRAL PRESSURE 904 MB
MAX SUSTAINED WINDS 140 KT WITH GUSTS TO 170 KT.
Like Joe Bastardi said, that doesn't quite match. Either the pressure is higher than 904 (unlikely) or the wind speed is more like 180 mph at sea level and they just haven't quite gotten an accurate reading. I suppose above 160 mph it doesn't make much difference.