Osceola County, Florida

What hazards hit Osceola County most?

The most frequent records are severe thunderstorm wind events: 102 since 1970. 41% of its severe thunderstorm wind events since 1970 fell in June and July. The rank column places the county among Florida's counties by days with a record per 1,000 square miles of land over each hazard's complete period.

Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.

How many tornadoes has Osceola County had?

NOAA records 43 tornadoes in Osceola County from 1960 to 2025, the strongest rated F4, with 25 deaths and 169 injuries recorded in the county. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.

Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 44 tornadoes whose track touched Osceola County since 1950 (NOAA's county records number 43: they file a crossing tornado once per county segment, and the two databases differ on some tracks); along their whole tracks they killed 36 people, 25 of them in Osceola County.

Map of the strongest tornado tracks in Florida.

Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.

When was the last damaging storm in Osceola County?

The most recent record with damage, injuries or deaths is the October 9, 2024 flood ($753,000 in damage in 2025 dollars).

Osceola County Emergency Management reported street, and low-lying flooding as a result of 6 to 10 of rain in the Kissimmee, Poinciana, and Celebration area. A period of very heavy rainfall rates associated with the core of the storm led to flash flooding during the overnight period (Oct 9 - 10).
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1221492)

Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.

The deadliest and costliest records

A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.

Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.

Is it getting more frequent?

Records per decade for Osceola County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).

Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).

What time of year?

41% of its severe thunderstorm wind events since 1970 fell in June and July. The two busiest months are in violet.

Source: NOAA NCEI Storm Events Database, records by the month they began.

Federal disaster declarations for Osceola County

FEMA's register lists 39 declarations that include Osceola County: 22 major disasters, 14 emergencies and 3 fire management assistance declarations. Most were for hurricane (21) and fire (5).

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.

How many floods has Osceola County had?

NOAA's Storm Events Database holds 21 flood or flash flood records for Osceola County from 1996 to 2025, on 19 days, with 1 death. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Osceola County ranks 325th of 2,942 U.S. counties.

The National Flood Insurance Program has paid $25.0 million on 1,032 claims filed in Osceola County; the most in one year was 397 in 2022. Claims count insured losses only: uninsured flood damage is not in this file.

Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.

FEMA's modeled risk for Osceola County

FEMA's National Risk Index rates Osceola County Relatively Moderate overall, with an expected annual loss of $118 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.

Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.

Counties that share a border with Osceola County

1. Brevard County 1,127
2. Polk County 1,028
3. Orange County 780
4. Lake County 414
5. Highlands County 351
6. Osceola County 297
7. Indian River County 272
8. Okeechobee County 158

Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.

Next

• Tornadoes in FloridaEvery Florida tornado since 1950 and the counties with the most per square mile
• Severe thunderstorm wind in FloridaThe state's severe thunderstorm wind events, by county, year and month
• The Florida recordEvery hazard in the state, its deadliest events and its federal declarations
• FEMA's risk rating for each hazard in Osceola CountyThe hazard risk calculator: 18 hazards beside the county's record
• Download Osceola County's FEMA declarations (CSV)39 rows: every declaration that named the county, for your own analysis