After forming in the central Bahamas, Katrina came ashore in south Florida as a Category 1 hurricane where it was responsible for 11 fatalities. The storm cut diagonally across the southern part of the state from just north of Miami on the east coast, through the Everglades, to Cape Sabel on the west coast. In the process, Katrina brought heavy amounts of rain to parts of south Florida and Cuba.

Storm symbols mark the track of Katrina at 0:00 UTC (8 p.m. Eastern Daylight Savings Time (EDT) on the previous day), plus symbols are the location of Katrina at 12:00 UTC (8 a.m. EDT). The solid hurricane symbol represents a hurricane, the hollow symbol is a tropical storm, while a circle marks a tropical depression. The highest rainfall totals exceeded 12 inches of rain (dark red areas) over northwestern Cuba and the lower Florida Keys.

Amounts over the southern Florida peninsula were between 5 and 8 inches (green to yellow area). Local WSR-88D radar esimates were locally much higher just west of Miami, but the overall pattern and amounts over the lower keys were in good agreement with the MPA totals.