Hurricane Season Guide — Sebastian, Florida

Sebastian follows the Atlantic hurricane season, which the National Hurricane Center gives as June 1 to November 30. Based on the 1991 to 2020 climate period, the Center reports that an average Atlantic season produces 14 named storms, 7 hurricanes and 3 major hurricanes of Category 3 or stronger. For a city of 25,759 residents with a median age of 57.6 (U.S. Census Bureau ACS 2023), on the Indian River Lagoon in Indian River County, those six months set the calendar for county storm planning.

Activity is not spread evenly across the season. The National Hurricane Center states that the first named storm typically forms in mid to late June, the first hurricane in early to mid-August, and the first major hurricane in late August or early September. By its benchmark table, an average season reaches its seventh hurricane around Nov. 15, and the Sebastian area has seen a hurricane as late as November.

Two recent storms arrived late in the calendar. In November 2022, Hurricane Nicole reached the Sebastian area; Sebastian Daily reported that the eye made its way from Sebastian into Barefoot Bay, damaging several docks and closing a restaurant on Indian River Drive, and quoted the National Hurricane Center that Nicole was the first November hurricane to make landfall in Florida since Kate in 1985.

In October 2024, Hurricane Milton crossed the state from the Gulf Coast. Sebastian Daily reported local rainfall estimates of 6 to 8 inches and a flood watch for Sebastian as the storm approached. On Oct. 9, 2024, four confirmed tornadoes touched down in Indian River County, which county officials described as one of the worst known tornado outbreaks in modern history for the area, according to Vero News. The Sebastian Police Department joined the multiagency search and rescue on the barrier island that followed.

The National Hurricane Center lists the major hazards of a hurricane as storm surge and storm tide, heavy rainfall and inland flooding, high winds, rip currents and tornadoes. Indian River County Emergency Management maps hurricane evacuation zones for surge along the Indian River Lagoon and the barrier island, while the rainfall and tornado hazards reached Sebastian and Indian River County during Milton in 2024.

The Center notes that tropical cyclones often produce widespread, torrential rains in excess of 6 inches, and that flooding is the major threat from tropical cyclones for people living inland. It also states that tornadoes most often occur in thunderstorms embedded in rain bands well away from the center of the hurricane. Both descriptions match the Milton pattern in Sebastian and Indian River County, where a 6 to 8 inch rainfall forecast and the tornadoes of Oct. 9, 2024 arrived from a storm whose center made landfall on the opposite coast.

Countywide planning sits with Indian River County Emergency Management, which describes its function as developing, coordinating and promoting comprehensive emergency plans for all disaster events in Indian River County and ensuring county compliance with Florida Statute 252. The county page offers the Alert Indian River emergency notification system, a situation status page for government closures, and a public storm damage reporting tool used after storms.

The City of Sebastian keeps a Tropical Weather Information page where the city states it posts all relevant information on any hurricane or tropical storm. It lists the Citizens Request Line at 772-581-0111, which the city notes is not manned 24/7, City of Sebastian broadcasts on Channel 22 and AT&T U-Verse Channel 99, Indian River County on Comcast Channel 27, and Indian River County Emergency Services at 772-226-3900. The same page lists the Florida Emergency Information Line at 800-342-3557, FPL outage reporting at 1-800-468-8249, and local radio stations including WQCS-FM 88.9.

Three county systems come into use when a storm threatens Sebastian. The first is the evacuation zone map: Indian River County Emergency Management letters its zones A through E, and the county keeps a layer named Mobile Home Parks, Evacuation Zone A, so mobile home parks in and around Sebastian fall in the first group to be ordered out. The second is the public shelter network in School District of Indian River County campuses. For Hurricane Milton, WFLX reported on Oct. 8, 2024 that general population shelters opened at 2 p.m. at Fellsmere Elementary School, Sebastian River Middle School, Oslo Middle School and the Vero Beach High School Freshmen Learning Center.

The third is the special needs program, which depends on registration made before the season. The county states that preregistration is required for the Special Needs Shelter and for transportation to a general population or pet-friendly shelter, that registration moved online through the Florida Department of Health as of January 2025, and that there will not be time to register applicants once a storm approaches Indian River County. Separate Sebastian pages cover evacuation zones, shelters and flood zones in detail.

Preparation runs through the spring. On Saturday, April 26, 2025, the Indian River County Board of County Commissioners held an All-Hazards Disaster Preparedness Expo at the Jackie Robinson Training Complex in Vero Beach, with educational booths and demonstrations from emergency services, as reported by Sebastian Daily. In June 2024, the paper reported that Florida's first Disaster Preparedness Sales Tax Holiday of that year ran through June 14 and that Florida Power & Light had installed underground utilities and replaced wooden poles with concrete ones along major Sebastian roads such as US-1 and CR-512 (Sebastian Daily).

Recovery is split between the city and the county. After Hurricane Milton, Sebastian Daily reported that the City of Sebastian and Indian River County ran separate debris collections: City of Sebastian residents starting Sunday, Oct. 20, 2024, and unincorporated Indian River County residents starting Monday, Oct. 21. Contractors for both made a single pass, collecting hurricane debris placed at the curb without bags, with brush separated from other debris.

Seasonal outlooks frame each year. For 2024, Sebastian Daily reported that NOAA predicted an 85% likelihood of an above-normal season. For 2025, NOAA forecast 13 to 19 named storms, 6 to 10 hurricanes and 3 to 5 major hurricanes, giving a 60% chance of an above-normal season. Those outlooks cover the whole Atlantic basin and do not forecast landfalls in Sebastian or Indian River County.