Heat Wave Risk in Florida
All Florida counties ranked by FEMA National Risk Index heat wave score
Heat Wave risk — prolonged periods of extreme heat that threaten health and infrastructure — is rated for 67 of 67 Florida counties in FEMA's National Risk Index. Miami-Dade County carries the state's highest heat wave score at 99.3, with $31M in expected annual heat wave losses.
5 Florida counties are rated High or Very High for heat wave, and expected annual losses from heat wave total roughly $165M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Heat Wave
| # | County | Heat Wave Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Miami-Dade County | High | 6.16 / yr | $31M | |
| 2 | Broward County | High | 5.71 / yr | $20M | |
| 3 | Palm Beach County | High | 4.67 / yr | $13M | |
| 4 | Hillsborough County | High | 3.51 / yr | $9M | |
| 5 | Duval County | High | 4.58 / yr | $9M | |
| 6 | Pinellas County | Medium | 3.04 / yr | $6M | |
| 7 | Orange County | Medium | 1.95 / yr | $5M | |
| 8 | Escambia County | Medium | 8.90 / yr | $5M | |
| 9 | Collier County | Medium | 5.23 / yr | $4M | |
| 10 | Polk County | Medium | 3.21 / yr | $4M | |
| 11 | Lee County | Medium | 2.44 / yr | $3M | |
| 12 | Leon County | Medium | 6.58 / yr | $4M | |
| 13 | Marion County | Medium | 3.07 / yr | $2M | |
| 14 | Pasco County | Medium | 2.86 / yr | $3M | |
| 15 | Sarasota County | Medium | 3.02 / yr | $2M | |
| 16 | Manatee County | Medium | 3.50 / yr | $2M | |
| 17 | Okaloosa County | Medium | 8.05 / yr | $3M | |
| 18 | Santa Rosa County | Medium | 9.01 / yr | $3M | |
| 19 | Alachua County | Medium | 3.30 / yr | $2M | |
| 20 | Brevard County | Medium | 1.86 / yr | $2M | |
| 21 | Volusia County | Medium | 1.74 / yr | $2M | |
| 22 | Bay County | Medium | 6.70 / yr | $2M | |
| 23 | Clay County | Medium | 3.73 / yr | $2M | |
| 24 | St. Johns County | Medium | 3.75 / yr | $2M | |
| 25 | St. Lucie County | Medium | 2.38 / yr | $1M | |
| 26 | Lake County | Medium | 1.89 / yr | $1M | |
| 27 | Seminole County | Low | 1.90 / yr | $2M | |
| 28 | Osceola County | Low | 1.95 / yr | $1M | |
| 29 | Columbia County | Low | 4.01 / yr | $952K | |
| 30 | Hernando County | Low | 2.81 / yr | $1M | |
| 31 | Citrus County | Low | 2.65 / yr | $815K | |
| 32 | Charlotte County | Low | 2.51 / yr | $839K | |
| 33 | Sumter County | Low | 2.79 / yr | $689K | |
| 34 | Highlands County | Low | 3.21 / yr | $596K | |
| 35 | Nassau County | Low | 4.20 / yr | $1M | |
| 36 | Flagler County | Low | 3.46 / yr | $801K | |
| 37 | Walton County | Low | 6.03 / yr | $808K | |
| 38 | Jackson County | Low | 6.47 / yr | $622K | |
| 39 | Martin County | Low | 2.33 / yr | $656K | |
| 40 | Gadsden County | Low | 6.63 / yr | $509K | |
| 41 | Putnam County | Low | 3.23 / yr | $549K | |
| 42 | Monroe County | Low | 4.14 / yr | $668K | |
| 43 | Indian River County | Low | 1.96 / yr | $555K | |
| 44 | Suwannee County | Low | 3.95 / yr | $444K | |
| 45 | Baker County | Low | 4.11 / yr | $587K | |
| 46 | Hendry County | Low | 3.53 / yr | $255K | |
| 47 | Levy County | Low | 2.85 / yr | $259K | |
| 48 | Taylor County | Low | 6.54 / yr | $284K | |
| 49 | Washington County | Low | 6.33 / yr | $325K | |
| 50 | DeSoto County | Low | 3.21 / yr | $200K | |
| 51 | Bradford County | Low | 3.64 / yr | $314K | |
| 52 | Wakulla County | Low | 6.37 / yr | $411K | |
| 53 | Okeechobee County | Low | 2.68 / yr | $195K | |
| 54 | Madison County | Low | 5.48 / yr | $206K | |
| 55 | Jefferson County | Low | 6.40 / yr | $172K | |
| 56 | Calhoun County | Low | 6.95 / yr | $192K | |
| 57 | Holmes County | Low | 5.85 / yr | $227K | |
| 58 | Hamilton County | Low | 4.09 / yr | $151K | |
| 59 | Gulf County | Low | 7.00 / yr | $181K | |
| 60 | Gilchrist County | Very Low | 3.42 / yr | $150K | |
| 61 | Union County | Very Low | 3.53 / yr | $191K | |
| 62 | Dixie County | Very Low | 4.43 / yr | $160K | |
| 63 | Franklin County | Very Low | 6.34 / yr | $142K | |
| 64 | Hardee County | Very Low | 3.32 / yr | $154K | |
| 65 | Glades County | Very Low | 3.63 / yr | $80K | |
| 66 | Lafayette County | Very Low | 4.84 / yr | $92K | |
| 67 | Liberty County | Very Low | 6.74 / yr | $79K |
67 Florida counties with measurable heat wave risk. See the national heat wave ranking or all Florida counties by overall risk.
Frequently Asked Questions
Which Florida county has the highest heat wave risk?
Miami-Dade County has the highest FEMA heat wave risk score in Florida at 99.3 (High), with $31M in expected annual losses and about 6.16 events per year.
How many Florida counties face significant heat wave risk?
67 Florida counties record measurable heat wave risk in FEMA's National Risk Index; 5 of them are rated High or Very High.