Heat Wave Risk in Louisiana
All Louisiana 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 64 of 64 Louisiana counties in FEMA's National Risk Index. Caddo Parish carries the state's highest heat wave score at 98.7, with $16M in expected annual heat wave losses.
6 Louisiana counties are rated High or Very High for heat wave, and expected annual losses from heat wave total roughly $140M 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 | Caddo Parish | High | 20.68 / yr | $16M | |
| 2 | East Baton Rouge Parish | High | 14.85 / yr | $12M | |
| 3 | Bossier Parish | High | 20.68 / yr | $14M | |
| 4 | Jefferson Parish | High | 12.38 / yr | $10M | |
| 5 | Orleans Parish | High | 14.23 / yr | $8M | |
| 6 | Ouachita Parish | High | 21.11 / yr | $6M | |
| 7 | St. Tammany Parish | Medium | 16.11 / yr | $8M | |
| 8 | Terrebonne Parish | Medium | 12.92 / yr | $4M | |
| 9 | Lafayette Parish | Medium | 10.42 / yr | $5M | |
| 10 | Tangipahoa Parish | Medium | 14.24 / yr | $3M | |
| 11 | Livingston Parish | Medium | 14.86 / yr | $4M | |
| 12 | Lafourche Parish | Medium | 18.39 / yr | $3M | |
| 13 | Rapides Parish | Medium | 11.42 / yr | $3M | |
| 14 | Ascension Parish | Medium | 14.89 / yr | $3M | |
| 15 | Webster Parish | Medium | 20.37 / yr | $2M | |
| 16 | Lincoln Parish | Medium | 20.53 / yr | $2M | |
| 17 | Calcasieu Parish | Medium | 9.85 / yr | $2M | |
| 18 | St. Landry Parish | Medium | 11.22 / yr | $2M | |
| 19 | Natchitoches Parish | Medium | 21.74 / yr | $2M | |
| 20 | Iberia Parish | Medium | 9.98 / yr | $1M | |
| 21 | Washington Parish | Medium | 13.54 / yr | $1M | |
| 22 | De Soto Parish | Medium | 20.68 / yr | $1M | |
| 23 | Acadia Parish | Medium | 10.03 / yr | $1M | |
| 24 | Morehouse Parish | Medium | 19.47 / yr | $907K | |
| 25 | St. Martin Parish | Low | 10.39 / yr | $995K | |
| 26 | St. Charles Parish | Low | 14.74 / yr | $1M | |
| 27 | Avoyelles Parish | Low | 11.42 / yr | $879K | |
| 28 | Vermilion Parish | Low | 9.79 / yr | $1M | |
| 29 | Union Parish | Low | 20.84 / yr | $847K | |
| 30 | Sabine Parish | Low | 21.00 / yr | $787K | |
| 31 | St. Mary Parish | Low | 9.44 / yr | $898K | |
| 32 | Franklin Parish | Low | 19.05 / yr | $775K | |
| 33 | Richland Parish | Low | 19.47 / yr | $715K | |
| 34 | St. John the Baptist Parish | Low | 14.74 / yr | $1M | |
| 35 | Concordia Parish | Low | 17.37 / yr | $721K | |
| 36 | Vernon Parish | Low | 10.79 / yr | $832K | |
| 37 | Claiborne Parish | Low | 20.26 / yr | $587K | |
| 38 | Grant Parish | Low | 21.68 / yr | $886K | |
| 39 | Iberville Parish | Low | 14.75 / yr | $822K | |
| 40 | Winn Parish | Low | 21.68 / yr | $591K | |
| 41 | Bienville Parish | Low | 20.74 / yr | $585K | |
| 42 | Jackson Parish | Low | 20.89 / yr | $616K | |
| 43 | Evangeline Parish | Low | 10.47 / yr | $567K | |
| 44 | St. Bernard Parish | Low | 9.29 / yr | $848K | |
| 45 | Assumption Parish | Low | 14.33 / yr | $554K | |
| 46 | Pointe Coupee Parish | Low | 14.11 / yr | $526K | |
| 47 | East Feliciana Parish | Low | 13.79 / yr | $487K | |
| 48 | St. James Parish | Low | 14.74 / yr | $549K | |
| 49 | Madison Parish | Low | 19.63 / yr | $407K | |
| 50 | Plaquemines Parish | Low | 11.07 / yr | $589K | |
| 51 | LaSalle Parish | Low | 21.63 / yr | $619K | |
| 52 | Beauregard Parish | Low | 10.22 / yr | $552K | |
| 53 | West Baton Rouge Parish | Low | 14.79 / yr | $724K | |
| 54 | West Carroll Parish | Low | 19.37 / yr | $376K | |
| 55 | Catahoula Parish | Low | 18.00 / yr | $329K | |
| 56 | Red River Parish | Low | 20.79 / yr | $320K | |
| 57 | Caldwell Parish | Low | 21.05 / yr | $396K | |
| 58 | East Carroll Parish | Low | 19.47 / yr | $283K | |
| 59 | St. Helena Parish | Low | 13.85 / yr | $277K | |
| 60 | West Feliciana Parish | Low | 13.68 / yr | $379K | |
| 61 | Jefferson Davis Parish | Low | 9.47 / yr | $352K | |
| 62 | Allen Parish | Low | 10.34 / yr | $347K | |
| 63 | Tensas Parish | Low | 18.89 / yr | $202K | |
| 64 | Cameron Parish | Very Low | 9.33 / yr | $56K |
64 Louisiana counties with measurable heat wave risk. See the national heat wave ranking or all Louisiana counties by overall risk.
Frequently Asked Questions
Which Louisiana county has the highest heat wave risk?
Caddo Parish has the highest FEMA heat wave risk score in Louisiana at 98.7 (High), with $16M in expected annual losses and about 20.68 events per year.
How many Louisiana counties face significant heat wave risk?
64 Louisiana counties record measurable heat wave risk in FEMA's National Risk Index; 6 of them are rated High or Very High.