Katrina again rapidly intensified , attaining Category NUMBER@1 status on the morning of August NUMBER@2 and reached its peak strength at NUMBER@3 p.m. CDT that day , with maximum sustained winds of NUMBER@4 mph -LRB- NUMBER@5 km/h -RRB- and a minimum central pressure of NUMBER@6 mbar .

Katrina again began to become quickly strengthen , reaching Category NUMBER@1 strength on the morning of August NUMBER@2 and reached its strongest point with maximum sustained winds of NUMBER@4 mph -LRB- NUMBER@5 km/h -RRB- and a minimum central pressure of NUMBER@6 mbar .
