Natural Disasters in South Sioux City, NE
Hazard risk, disaster history, and FEMA data
Natural Hazard Risk
Source: FEMA National Risk IndexRisk Score
36.0
Very Low
Expected Annual Loss
40.6
Score (0-100)
Social Vulnerability
34.2
Score (0-100)
Community Resilience
8.0
Score (0-100)
Top Hazard Risks
| Hazard | Risk Score |
|---|---|
| Hail | 87.0 |
| Wildfire | 78.1 |
| Tornado | 75.6 |
| Drought | 74.5 |
| Landslide | 74.0 |
| Ice Storm | 64.7 |
| Heat Wave | 60.2 |
| Winter Weather | 51.2 |
| Strong Wind | 50.4 |
| Cold Wave | 29.0 |
| Lightning | 25.3 |
| Earthquake | 14.6 |
Scores range from 0 (lowest risk) to 100 (highest risk) relative to all U.S. communities. Data from FEMA National Risk Index.
Disaster Declarations
Source: FEMA OpenFEMATotal Declarations
16
Most Recent
Winter Storm
May 2025
Most Common Type
Flood
7 declarations
| Date | Type | Declaration |
|---|---|---|
| May 21, 2025 | Winter Storm | SEVERE WINTER STORM AND STRAIGHT-LINE WINDS |
| Sep 24, 2024 | Severe Storm | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING |
| Apr 4, 2020 | Biological | COVID-19 PANDEMIC |
| Mar 13, 2020 | Biological | COVID-19 |
| Mar 21, 2019 | Flood | SEVERE WINTER STORM, STRAIGHT-LINE WINDS, AND FLOODING |
| Aug 27, 2018 | Severe Storm | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING |
| Jul 24, 2014 | Severe Storm | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING |
| Aug 12, 2011 | Flood | FLOODING |
| Jun 18, 2011 | Flood | FLOODING |
| Apr 21, 2010 | Flood | SEVERE STORMS, ICE JAMS, AND FLOODING |
| Feb 25, 2010 | Severe Storm | SEVERE WINTER STORMS AND SNOWSTORM |
| Sep 13, 2005 | Hurricane | HURRICANE KATRINA EVACUEES |
| Oct 12, 2001 | Severe Storm | SEVERE STORMS AND A TORNADO |
| Jul 7, 1971 | Flood | FLOODS |
| Feb 23, 1971 | Flood | FLOODS |
| Jul 18, 1967 | Flood | SEVERE STORMS & FLOODING |
Flood Insurance (NFIP)
Source: FEMA NFIPTotal Claims
89
Total Claims Paid
$926,491
Avg Claim Payout
$10,410
County-level NFIP data from FEMA National Flood Insurance Program.
Disaster Recovery Spending
Source: FEMA Public AssistanceTotal Federal Spending
$10,965,210
Disasters with PA
8
Total Projects
148
| Disaster | Type | Projects | Federal $ |
|---|---|---|---|
| DR-4013 | Flood | 79 | $5,110,188 |
| DR-4420 | Severe Storm(s) | 21 | $2,592,021 |
| DR-1394 | Severe Storm(s) | 10 | $1,360,450 |
| DR-4822 | Severe Storm(s) | 5 | $610,882 |
| DR-4183 | Severe Storm(s) | 7 | $462,595 |
| DR-4387 | Severe Storm(s) | 11 | $428,302 |
| DR-4521 | Biological | 6 | $296,034 |
| DR-1878 | Severe Storm(s) | 9 | $104,738 |
Hazard Mitigation
Source: FEMA Hazard Mitigation AssistanceMitigation Projects
4
Federal Funding
$14,650
Properties Protected
2
Avg Benefit-Cost Ratio
0.81
BCR
Top Mitigation Project Types
| Project Type | Projects | Federal $ |
|---|---|---|
| 206.1: Safe Room (Tornado and Severe Wind Shelter) - Private Structures | 2 | $0 |
| 600.1: Warning Systems (as a Component of a Planned, Adopted, and Exercised Risk Reduction Plan) | 1 | $14,650 |
| 601.1: Generators | 1 | $0 |
Federally funded projects to reduce future disaster risk. Only includes completed or obligated projects.
South Sioux City has a very low overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are hail, wildfire, tornado. The area has had 16 federal disaster declarations. The most common disaster type is flood (7 declarations). 89 flood insurance claims have been filed in the area. FEMA has obligated $10,965,210 in public assistance recovery funding. 4 hazard mitigation projects have been funded to reduce future risk.