Governor Ron DeSantis confirmed the toll at a press conference on Tuesday, including two deaths previously announced. Those killed include one person struck when a tree fell on a home, one person found deceased in a garage with a running generator in Escambia county, a fatal car accident at an intersection and two deaths linked to storm-related disruptions to medical treatment.
Hundreds of thousands of residents lost power during the storm. About 5,000 people remain without electricity north-west of where the system came ashore, DeSantis said, and free supplies are being offered at distribution sites for affected Floridians.
The governor praised residents and local officials for heeding warnings, saying precautions had kept the death toll lower than in previous storms.
"We're sad to hear that. At the same time, we've had some where there have been a lot more. So I think that people did take precautions and I think the local officials did a good job of spreading the word," DeSantis said.
Isaias was the first hurricane to make landfall in the continental US in two years, since Milton struck western Florida in October 2024. Its formation this late in the season is notable: the first Atlantic hurricane has not formed this late since 8 October 1905, before the satellite era. Forecasters have attributed the quiet season to a strong El Niño.
The National Oceanic and Atmospheric Administration warned of life-threatening storm surges along portions of the northern Gulf coast and damaging hurricane-force winds over parts of the Florida panhandle, southern Alabama and Mississippi.