Louisiana ice storm risk
Caddo Parish has the highest ice storm risk in Louisiana, scoring 100 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Caddo Parish | 100 | Very High |
| 2 | Bossier Parish | 99.4 | Very High |
| 3 | Webster Parish | 98.5 | Very High |
| 4 | Lincoln Parish | 97.6 | Very High |
| 5 | Ouachita Parish | 97.4 | Very High |
| 6 | Bienville Parish | 95.4 | Very High |
| 7 | Claiborne Parish | 94.4 | Relatively High |
| 8 | Avoyelles Parish | 92.1 | Relatively High |
| 9 | East Baton Rouge Parish | 92 | Relatively High |
| 10 | Lafayette Parish | 90.3 | Relatively High |
| 11 | Calcasieu Parish | 90.1 | Relatively High |
| 12 | Union Parish | 90 | Relatively High |
| 13 | Jefferson Parish | 89.7 | Relatively High |
| 14 | Rapides Parish | 85.5 | Relatively High |
| 15 | Jackson Parish | 85.4 | Relatively High |
| 16 | Beauregard Parish | 84.9 | Relatively High |
| 17 | St. Landry Parish | 84.8 | Relatively High |
| 18 | Morehouse Parish | 83.8 | Relatively High |
| 19 | Acadia Parish | 80.1 | Relatively Moderate |
| 20 | Allen Parish | 79.4 | Relatively Moderate |
| 21 | Tangipahoa Parish | 78.7 | Relatively Moderate |
| 22 | St. Tammany Parish | 78.1 | Relatively Moderate |
| 23 | Natchitoches Parish | 77.9 | Relatively Moderate |
| 24 | Vernon Parish | 77.2 | Relatively Moderate |
| 25 | Evangeline Parish | 76.3 | Relatively Moderate |
| 26 | Livingston Parish | 76.2 | Relatively Moderate |
| 27 | Sabine Parish | 74.9 | Relatively Moderate |
| 28 | Richland Parish | 73.9 | Relatively Moderate |
| 29 | De Soto Parish | 73.8 | Relatively Moderate |
| 30 | Jefferson Davis Parish | 73.3 | Relatively Moderate |
| 31 | Ascension Parish | 71.4 | Relatively Moderate |
| 32 | St. Martin Parish | 70.2 | Relatively Moderate |
| 33 | West Carroll Parish | 65.7 | Relatively Moderate |
| 34 | Orleans Parish | 64.6 | Relatively Moderate |
| 35 | Vermilion Parish | 64.2 | Relatively Moderate |
| 36 | Franklin Parish | 62.7 | Relatively Moderate |
| 37 | Winn Parish | 62.1 | Relatively Moderate |
| 38 | Washington Parish | 61.6 | Relatively Moderate |
| 39 | Red River Parish | 60.9 | Relatively Moderate |
| 40 | Iberia Parish | 60.4 | Relatively Moderate |
| 41 | East Carroll Parish | 58.7 | Relatively Low |
| 42 | Pointe Coupee Parish | 57.6 | Relatively Low |
| 43 | Madison Parish | 56.1 | Relatively Low |
| 44 | Concordia Parish | 55.3 | Relatively Low |
| 45 | Grant Parish | 49 | Relatively Low |
| 46 | Tensas Parish | 48.5 | Relatively Low |
| 47 | East Feliciana Parish | 47.1 | Relatively Low |
| 48 | Iberville Parish | 46.1 | Relatively Low |
| 49 | Caldwell Parish | 46 | Relatively Low |
| 50 | LaSalle Parish | 44.1 | Relatively Low |
| 51 | Catahoula Parish | 39.5 | Relatively Low |
| 52 | St. John the Baptist Parish | 37.8 | Relatively Low |
| 53 | West Feliciana Parish | 37.8 | Relatively Low |
| 54 | West Baton Rouge Parish | 33.9 | Relatively Low |
| 55 | St. Helena Parish | 33.4 | Relatively Low |
| 56 | St. Mary Parish | 32.5 | Relatively Low |
| 57 | St. James Parish | 27.3 | Relatively Low |
| 58 | Cameron Parish | 24.9 | Very Low |
| 59 | St. Bernard Parish | 17.1 | Very Low |
| 60 | St. Charles Parish | 14.5 | Very Low |
| 61 | Plaquemines Parish | 13 | Very Low |
| 62 | Assumption Parish | 12.4 | Very Low |
| 63 | Terrebonne Parish | 2.8 | Very Low |
| 64 | Lafourche Parish | 1.4 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Ice Storm risk nationally:
Other hazard risks in Louisiana:
Frequently asked questions
What is the highest ice storm risk county in Louisiana?
Caddo Parish, LA has the highest ice storm risk in Louisiana, with a FEMA National Risk Index score of 100 out of 100 (rated "Very High").
How many counties in Louisiana are rated Very High for ice storm risk?
6 of 64 scored Louisiana counties are rated "Very High" for ice storm risk by FEMA's National Risk Index.
What causes ice storm risk in Louisiana?
Ice storm risk covers damaging freezing rain and sleet accumulation, which collapses power lines, trees, and structures. The highest-risk counties cluster in a band from eastern Texas and Arkansas through the Carolinas and New England, where warm Gulf moisture overruns cold arctic air most frequently. Ice storms cause catastrophic and long-lasting power outages. Ice storm and sleet events are reported at forecast-zone level in NOAA Storm Events and are not included in county-level counts.